Bed for patient for system of obtaining pet/mp images

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment, namely to combined system of obtaining images. Hybrid system of obtaining images includes magnetic resonance scanner and system of obtaining images of the second method of impact, separated from magnetic resonance scanner with some space. In the first version of implementation, said space is less than four metres. In the second version magnetic resonance scanner and system of obtaining images of the second method of impact are located in a room with radio-frequency insulation. Bed for patient is located, at least, partially, in the space between magnetic resonance scanner and system of obtaining images of the second method of impact and includes base, located between magnetic resonance scanner and system of obtaining images of the second method of impact, movable linearly table for supporting patient, installed for selected travel in the area of examination by magnetic resonance scanner and in the area of examination of system of obtaining images of the second method of impact. In the first version of implementation, area of linear table travel constitutes less than five-fold length of table for supporting patient in direction of linear travel. In the second version table is provided with radio-frequency device or port of device, radio-frequency cable being connected to them. In the third version of implementation table for supporting patient moves in the first direction in the area of magnetic resonance scanner examination for obtaining magnetic resonance images, and in the second direction, in the area of system of obtaining images of the second method of impact examination. Method of hybrid system modification lies in placement of system of obtaining images of the second method of impact in a room with radio-frequency insulation, which contains magnetic resonance scanner together with system of obtaining images of the second method of impact, separated from magnetic resonance scanner by some space smaller than seven metres and with areas of examination of respective systems of magnetic resonance scanner and obtaining images of the second method of impact.

EFFECT: invention makes it possible to reduce total size of hybrid system of image obtaining and increase efficiency of scanning.

31 cl, 9 dwg

 

The present application relates to the field of medical imaging. In particular it refers to the combined image acquisition systems using magnetic resonance (Mr) and positron emission tomography (PET) and is described with specific reference to it. Everything below applies in a more General sense, to the image acquisition systems, which combine the effects to obtain Mr images from the modality that uses high-energy particles, such as the above modality PET, the way the impact of single photon emission computed tomography (mect), the effects of transmission computed tomography (CT)modality of radiation therapy or something like that.

In a hybrid system for obtaining images, two or more modality for imaging for medicine are integrated in the same equipment or premises, or even on the same platform. Hybrid system for obtaining images enable medical personnel to combine the advantages of constituent modalities, for more useful information about the patient. Hybrid system for obtaining images also make it easier to temporal and spatial registration of images from SOS is alausa methods of influence compared with obtaining such images using discrete, separate image acquisition systems. A separate system for obtaining images have a greater lag time between research and make complex reduced the anxiety of the patient between the studies.

Advantages of hybrid image acquisition systems implemented commercially. For example, Precedence of mect/CT, available from Philips Medical Systems, Eindhoven, The Netherlands provides a CT scanner and a gamma camera to obtain an image using the mect. The latter includes two heads radiation detectors that are installed on the robot manipulators, separated from the CT platform along the edge of the system, near to the patient. Stretched couch of the patient is used to make possible adequate axial movement of the patient. Thus, the possibility of obtaining images with CT, and the mect are available with limited modifications or platform CT or spatially separated by a gamma camera. Similarly, the system PET/CT Gemini, also available from Philips Medical Systems, Eindhoven, The Netherlands, provides methods for retrieving images using both PET and CT.

However, the design of the hybrid system retrieving images, includes scanner, magnetic resonance (Mr) system for obtaining images of a second modality using the particle is whether the photons of high energies (such as the mect or PET) is a challenge. In a typical equipment to produce images of magnetic resonance imaging the magnetic resonance scanner is located in a specially constructed space with RF isolation created using ambient radio frequency screen type Faraday cage. Space with RF isolation protects sensitive detection system magnetic resonance from the influence of external radio frequency radiation. In addition, radio frequency (RF) screen helps to reduce the emission of radio-frequency radiation of the RF transmission coil of the Mr scanner in the environment outside of the scanner. Problematically, electronics for radiation detectors used in PET scanners or other image acquisition systems, which detects particles or high energy photons, typically creates high levels of RF interference. On the contrary, the magnetic field generated by the magnetic resonance scanner, distorts the response of the photon detectors used in PET scanner. As a consequence, when considering placement in the same room, close to each other, there is the initial practical incompatibility between the scanner magnetic resonance system to acquire images, which detects particles or photons of high energies.

Cho et al., the published application is and U.S. patent No. 2006/0052685, I propose to overcome this initial incompatibility by the location of the PET scanner outside space with radiofrequency insulation containing the magnetic resonance scanner. Unfortunately, this approach destroys many of the benefits of hybrid Mr/PET. The patient should be transferred between systems MRI and PET through the hole valve type in the wall with radiofrequency insulation containing the Mr scanner. Medical personnel should move back and forth between the room containing the PET scanner, and location with RF isolation, containing the Mr scanner. The system Cho et al. includes the long rails to transfer the patient between scanners MRI and PET, are located in separate rooms. The patient may find such a long migration uncomfortable, and motion or other movement of the patient during such a long migration may introduce spatial registration errors in an image produced using MRI and PET. In addition, difficulties may arise when migrating local coils used to produce images of magnetic resonance imaging over a long distance on the rails.

Another approach that has been proposed is to incorporate the radiation detectors of the PET in the scanner platform magnetic resonance. It is proposed that the medium is the correct positioning of the radiation detectors in the zero point of the magnetic field, the influence of the magnetic flux field on the radiation detectors PET could be reduced. However, this approach does not solve the problem of the influence of radio frequency radiation detectors radiation affecting the detection of magnetic resonance. In addition, the built-in detectors of radiation PAT occupy valuable space tunnel in the Mr scanner.

The variation of the approach of embedding described in Hammer, U.S. patent No. 4939464, is to embed alone scintillation PET scanner in the scanner magnetic resonance. Light scintillate that occur in the event of detection of radiation, is captured and transferred via fiber optics to remote optical detectors of the PET system. This approach reduces, but not eliminates, the use of space tunnel Mr components of PET and additionally creates problems of sensitivity in the system of the PET due to optical losses in the long fiber of the agreed systems of the world. Furthermore, although the remote location of the electronics of the detection light is predominant, some types of scintillation crystals demonstrate spontaneous radioactivity, which still gives a noticeable effect of radio frequency radiation.

The lack of existing hybrid approaches is that these approaches are not suitable for modernises the existing magnetic resonance scanner. The approach of Cho et al. requires availability of accommodations for your PET scanner conveniently located next to the room with the radio frequency isolation of the magnetic resonance scanner, and, in addition, requires cutting through the passage in the dividing wall and add a complex and cumbersome system of rails to link scanners PET and MRI, located in separate rooms. Approaches that embed the radiation detectors of the PET in the tunnel of the Mr scanner, similarly increase the complexity of the modernization process, and may not work for some existing Mr scanners.

In accordance with one aspect, describes a bed for a patient, comprising a base located between the magnetic resonance scanner and system for obtaining images of a second modality and the second modality is other than magnetic resonance; and linearly moved the table to support the patient, supported by the base and mounted for selective movement in the study area of the magnetic resonance scanner to obtain images of magnetic resonance imaging and research system for obtaining images of a second modality, for acquiring images of a second modality, and the area of the linear movement of the linearly moveable table is less than p is fold the length of the table to support the patient in the direction of linear movement.

In accordance with another aspect, describes a hybrid system for image acquisition, which includes a magnetic resonance scanner; a system for obtaining images of a second modality that is separated from the magnetic resonance scanner some space, less than seven meters, and the second type of impact is other than magnetic resonance; and a bed for the patient located at least partially in the space between the magnetic resonance scanner and system for obtaining images of a second modality, and a bed for a patient includes linearly moved the table to support the patient, mounted for linear movement in the study area scanner magnetic resonance to produce images of magnetic resonance imaging and research system for obtaining images of a second modality for acquiring images of the second type of impact.

In accordance with another aspect, describes a method of modernization, which includes accommodation system for obtaining images of a second modality in the room with the radio frequency isolation, containing the magnetic resonance scanner, together with a system for obtaining images of a second modality that is separated from the magnetic resonance scanner some space, m is Nisim than seven meters, and research areas relevant systems of the magnetic resonance scanner and acquiring images of a second modality, defined linearly, and the second type of impact is other than magnetic resonance; and the placement of the bed for the patient, at least partially in the space between the magnetic resonance scanner and system for obtaining images of a second modality, with a linearly movable table for supporting the patient on a bed for a patient, mounted for linear movement in the study area of the magnetic resonance scanner to obtain images of magnetic resonance imaging and research system for obtaining images of a second modality for acquiring images of a second modality.

In accordance with another aspect, describes a bed for a patient, comprising a base located between the magnetic resonance scanner and system for obtaining images of a second modality and the second modality is other than magnetic resonance; move the table to support the patient, supported by the base and mounted for selective movement in the study area of the magnetic resonance scanner to obtain images of magnetic resonance imaging in the area investigated the I system for obtaining images of a second modality, to obtain images of a second modality; a radio frequency device or device port located along with the table; and a radio frequency cable having a first end connected with the radio frequency device or device port.

In accordance with another aspect, describes a hybrid system for image acquisition, comprising: a magnetic resonance scanner, located in the room with the radio frequency isolation; a system for obtaining images of a second modality that is located in the room with the radio frequency isolation with magnetic resonance scanner and the second modality is other than magnetic resonance; and a bed for a patient located in a room with a radio frequency isolation, at least partially, in the space between the magnetic resonance scanner and system for obtaining images of a second modality, and a bed for a patient includes a table for supporting the patient, to transfer the patient in research magnetic resonance scanner to obtain images of magnetic resonance imaging and research system for obtaining images of a second modality for acquiring images of the second type of impact.

In accordance with another aspect, describes a bed for a patient, comprising the base, the positioning between the magnetic resonance scanner and system for obtaining images of a second modality, the second type of impact is other than magnetic resonance; and a table for supporting the patient, supported by the base and movable in the first direction in the study of the magnetic resonance scanner to obtain images of magnetic resonance and moved in a second direction opposite the first direction, in the field of research system for obtaining images of a second modality for acquiring images of the second type of impact.

One of the advantages is to provide a compactly located in the space of a hybrid system for obtaining images.

Another advantage is to provide compactness in space without reducing the ease of loading of the patient through the availability of height adjustment and access to the bed for the patient from the edge of the bed.

Another advantage is the predominant placement of the bed for the patient in the space between the magnetic resonance scanner and system for obtaining images of a second modality, which provides for isolation of the two image acquisition systems from each other.

Another advantage is to provide a convenient RF cable connections in a hybrid system for obtaining images, which includes a scanner MAGN what these resonance.

Another advantage is being able to scan using magnetic resonance, and then PET, or another second modality image acquisition, or Vice versa, without disturbing the subject, except for a brief translational motion.

Additional advantages of the present invention will be clear to experts in this field when reading and understanding the following further detailed description.

The present invention may take form in various components and arrangements of components, and in various steps and arrangements of steps. The drawings are only for purposes of illustration the preferred embodiments and should not be construed as limiting the present invention.

Figure 1-5 schematically depict a hybrid system to obtain images at different stages of the example session of obtaining images of the brain, including schematic illustration of two alternative configurations of RF cables to connect the local head coil used on the site image acquisition magnetic resonance in session obtain images of the brain:

Figure 1 schematically depicts a hybrid system for obtaining images during loading of the patient;

Figure 2 schematically depicts a hybrid system image is of ageny with a table for the patient, raised to align with the components of the image acquisition systems except system for obtaining images of a second modality in its close position;

Figure 3 schematically depicts a hybrid system image system for obtaining images of a second modality, moved her closer position, with a plot of bed for a patient covered by the scope of the study a hybrid system for obtaining images, shown in broken lines;

Figure 4 schematically depicts a hybrid system for obtaining images with a table for the patient, progressively moved into the magnetic resonance scanner to obtain images of the brain, with selected internal components of the scanner magnetic resonance, shown in broken lines; and

Figure 5 schematically depicts a hybrid system for obtaining images with a table for the patient, the translational displacement in the system for obtaining images of a second modality to obtain images of the brain, with selected internal components of the system for obtaining images of a second modality, shown in broken lines.

6 schematically depicts a hexagonal system of seven tubes photomultipliers, essentially closed surrounded by a housing constructed from ferrum gitogo material.

7 schematically depicts an alternative arrangement of one photomultiplier tube, essentially surrounded by a housing constructed of a ferromagnetic material.

Fig schematically depicts active and partly passive layout shielding for radiation detectors system for obtaining images of the second type of impact.

Figure 9 schematically depicts another variant implementation of the hybrid system to produce images in which the retractable radio frequency screen can selectively be stretched in the space between the magnetic resonance scanner and system for obtaining images of the second type of impact.

Referring to Figures 1 to 5, a hybrid system for acquiring images includes a scanner 10 magnetic resonance imaging system 12 to obtain images of the second type of impact and support for the patient, such as illustrated bed 14 to the patient, which is located between the scanner 10 of the magnetic resonance system 12 receiving images of a second modality. The wireless screen, essentially surrounds and defines the space or the space 16 with the radio frequency isolation. The scanner 10 magnetic resonance imaging system 12 to obtain images of the second type of impact and the bed 14 to the patient are in the room with the radio frequency isolation. The scanner 10 magnetic is th resonance in some embodiments, the implementation is a commercial scanner magnetic resonance, such as a scanner magnetic resonance Achieva or Inter, is available from Philips Medical Systems, Eindhoven, The Netherlands. In a more General sense, the scanner 10 magnetic resonance can represent essentially any type of scanner, such as the depicted magnetic scanner with a cylindrical tunnel, a scanner with an open tunnel or something like that.

The space 16 with the radio frequency isolation is to isolate essentially sensitive receiver system of the magnetic resonance scanner 10 magnetic resonance from the influence of external RF radiation. RF screen that defines the space 16 with the radio frequency isolation, can use essentially any known layout, shielding, and usually contains a Faraday cage with a size corresponding to the location, the surrounding walls, ceiling and floor physical premises. Room 16 with radiofrequency insulation has a typical size for obtaining images using magnetic resonance, such as in areas that have a floor area of approximately 7×9 meters, while also considering larger or smaller areas and/or rooms with other dimensions of the floor. As is known in the field of magnetic resonance imaging in the room with the radio frequency isolation mainly provides Windows and doors for access, impenetrable for the sake of the frequency of the radiation.

The system 12 to obtain images of the second type of impact in some embodiments, the implementation is a scanner positron emission tomography (PET). However, there may be used other systems produce images of a second modality, such as a gamma camera to perform image acquisition of mect, scanner transmission computed tomography (CT) or something like that. Typically, the system 12 to obtain images of the second type of impact is made with the possibility of detecting at least one of the high-energy particles and photons of high energy. For example, the PET scanner detects 511-Kev photons generated during the events of the positron-electron annihilation; gamma camera configured to detect the selected particles, gamma radiation, or the like emitted by the selected radioactive pharmaceuticals; the CT scanner detects transmitted x-rays; and the like. In some embodiments, implementation, system 12 to obtain images of the second type of impact is a PET scanner Allegro, available from Philips Medical Systems, Eindhoven, The Netherlands. It is also assumed, for the system 12 to obtain images of the second type of impact that it contains two or more components of the system obtained the I images. For example, the system 12 to obtain images of a second modality may be a system of Precedence the mect/CT or system Gemini PET/CT, both also available from Philips Medical Systems, Eindhoven, The Netherlands.

Accommodation bed 14 for the patient between the scanner 10 of the magnetic resonance system 12 receiving images of a second modality is primary, because it physically separates the two different components of the system 10, 12 receive images. This physical separation reduces the negative influence of the static magnetic field generated by the scanner 10 magnetic resonance imaging system 12 to obtain images of the second type of impact, but also reduces the negative impact of mass of the ferromagnetic and effects of radio frequency radiation emanating from the system 12 to obtain images of a second modality, the scanner 10 magnetic resonance. The bed 14 for a patient includes a base 20 and linearly moved the table 22 to maintain the patient connected to the base 20 and mounted for selective movement in the field of 24 studies scanner 10 magnetic resonance to produce images of magnetic resonance in region 26 research system 12 receiving images of a second modality for acquiring images of a second modality (e.g. the, obtaining images with PET). Linearly moved the table 22 to maintain the patient is moved automatically by a motor (not shown)installed in the base 20 or in one of the systems 10, 12 receive images. Alternatively, the engine may be missing, and table 22 progressive moves manually. Optionally, the table 22 for supporting a patient includes at least one handle or other gripping feature (not shown), configured to facilitate translational handoff table for supporting the patient.

Figure 1 schematically depicts the location of the hybrid system during startup of the patient (Note that the right patient, which is loaded and is portrayed, not shown in the drawings). The base 20 is not necessarily made with the possibility of lowering during loading of the patient to allow easier loading of the patient on the table 22 for supporting the patient. The system 12 to obtain images of the second type of impact is not necessarily installed on the rails 28 to allow translational movement system 12 to obtain images of the second type of impact in the less close the position shown in figures 1 and 2, or in a closer position shown in Fig.3-5. The system 12 to obtain images of the WTO is on how the impact is relatively closer to the magnetic resonance scanner, in a closer position, and is relatively close (or in other words, relatively more remote from the scanner 10 magnetic resonance in the less close the position. In the less close (more remote) position optional there is some space between the edge of the bed 14 to the patient and the system 12 to obtain images of the second type of impact.

In some embodiments, implementation, an optional space is large enough to enable health staff to pass between the bed 14 to the patient and the system 12 to obtain images of a second modality to facilitate access to the patient. It is also intended to support the system for obtaining images of a second modality in a stationary position and install the scanner magnetic resonance on the rails, to allow for relative movement of the two components of the image acquisition systems.

Illustrated session retrieving images is a session of obtaining images of the brain, using a local head coil 30, which may be a take-up spool, only transmitting coil or receiving and transmitting coil. In a more General sense, may be an image obtained essentially any anatomy the definition section of the patient or the session of obtaining images of the whole body. Illustrative session of obtaining images of the brain, the local coil 30 is used for receiving the magnetic resonance signal, and optionally also used for transmission of the magnetic resonance signal excited by RF pulses. Other sessions, image acquisition can be used other local coil or sensor coils, such as a local coil for a hand, a local multi-channel or SENSE the matrix of coils made with the possibility of obtaining images of the torso, or the like. Some sessions of the image acquisition can be carried out without any local coil, using instead the coil 15 for the whole body or to another coil (not shown)installed in the scanner 10 magnetic resonance. The session receiving the image may also include the management of the respective magnetic contrast agent for contrast enhancement magnetic resonance and/or radioactive pharmaceutical preparations for the creation of radioactivity, to obtain an image using the system 12 to obtain images of a second modality, or something like that. In some approaches, reliable markers made with the possibility of obtaining an image using a scanner 10 magnetic resonance and system 12 to obtain images of the second sposobnostey, can be placed on the patient to improve or enable spatial registration of images obtained in two ways impact upon receipt.

The local head coil 26 is connected with the rest of the reception system of the magnetic resonance scanner 10 magnetic resonance with the RF cable, such as coaxial cable. Figure 1-5 two systems cable connections are shown as examples. In the first system cable connection, radio frequency cable 32 (shown using solid lines) remains connected with the local head coil 30 as in obtaining magnetic resonance images, and images of a second modality. RF cable 32 is arranged to pass under the linearly movable table 22 for supporting the patient and so that he had the first end, remaining United with the local head coil 30 (as shown) or with a device port that connects to the head coil 30, as when the table 22 to maintain the patient moves in the field of 24 studies scanner 10 magnetic resonance, and when the table 22 to maintain the patient moves in the field 26 research system 12 receiving images of a second modality. Tensioner, coil 36 or the another tensioning mechanism is optional based on 20 or near it to pull slack from the cable.

In the second alternative cable connection, radio frequency cable 42 (shown using dotted-dashed line) is configured with automatic disconnecting 44, which disconnects the first end of the RF cable from the head coil 30 or from the port device that connects to the head coil 30 (as shown), in response to movement of the table 22 to maintain the patient in the region of 26 research system 12 to retrieve images using the second method of action or direction to it. Tensioner, coil 46 or other tensioning mechanism does not necessarily located near the scanner 10 magnetic resonance on one side of the tunnel 60 scanner 10 magnetic resonance side from the support 14 for the patient to pull slack from the cable.

Figure 2 schematically shows a hybrid system after loading the patient, and after the base 20 of the bed 14 to the patient's height-adjustable lifting table 22 to maintain the patient in combination with regions 24, 26 research systems 10, 12 receive images.

Figure 3 schematically shows a hybrid system after the move operation system 14 to obtain images of the second type of impact in a closer position. In this closer position, linearly moved the table 22 to support the project for a patient, connected with the base 20 may progressively move to any region 24, 26 research to obtain images. As shown by broken lines in figure 3, in the illustrated embodiment, the section 48 of the bed 14 to the patient overlaps with the region 26 research system 12 receiving images of a second modality, when the system 12 to obtain images of the second type of impact is in the closer position. This system is convenient for mechanical connection of the support ledge for the patient 50 or other support system 12 receiving images of a second modality with the bed 14 to the patient. In other embodiments, the implementation of such overlapping is not provided, and the connection is made at the edge region 26 of the study or outside the scope of 26 studies. In some embodiments, the implementation, it is assumed that the system for obtaining images of the second type of impact does not include the arm of the patient or other support, and a bed for the patient instead takes the form of a console through research area system for obtaining images of the second type of impact.

Figure 4 schematically shows a hybrid system after the table 22 to maintain the patient moves in the field of 24 studies scanner 10 mA the magnetic resonance for the early image acquisition magnetic resonance. In figure 4, the system 12 to obtain images of a second modality is not used, but is in his closer position along the rails 28. In addition or alternatively, the image acquisition magnetic resonance imaging can be performed using the system 12 to obtain images of a second modality, which is not used and in its less close the position along the rails 28 (e.g., position along the rails, as shown in figure 1 and 2). The position of the system 12 to obtain images of a second modality usually affects the homogeneity of the static magnetic field of the scanner 10 magnetic resonance, because the system for obtaining images of a second modality, typically includes a large mass of metal or other ferromagnetic material, which may distort the static magnetic field. Optionally, the scanner 10 magnetic resonance provides trimmer coil 52, which generate a compensating magnetic field to ensure correction of the distortion of the static magnetic field due to the presence system 12 receiving images of a second modality. Moreover, it will be clear that this distortion depends on whether the system is 12 to obtain images of the second type of impact in the less close the position (figures 1 and 2) or more what liscom position (Fig.3-5), because the distance 12 between the system for obtaining images of the second type of impact and the scanner 10 magnetic resonance differs for these two positions. In some embodiments, implementation, tuning coils 52 are configured as switchable magnetic shimmy made with the possibility of the presence of the first switchable tuning, tuning a static magnetic field of the scanner 10 of the magnetic resonance system 12 to obtain images of the second type of impact in a closer position (Fig.3-5), and the presence of the second switching configuration, tuning a static magnetic field with the system 12 to retrieve images using the second method of exposure in the less close (more remote) position (Figure 1 and 2). For example, inductive, located on the lot or otherwise operating the sensor 54 may be located in the rails 28 or together with them to detect when the system 12 to obtain images of the second type of impact is in the closer position, and the output signal of the sensor 54 is used to switch the trimmer coil 52 between the two trimmer settings. In other embodiments, implementation, manual switch adjustment, optically triggered switch adjustment or other control mechanisms may be used instead of the sensor on the OS the ove rail 54. In one approach, the trimmer coil 52 may include aligning the first coil (via the gradient coils of the MRI) and second order. In another approach, can be used trimmer coil 52, specifically made with the possibility of adjustment for the two States.

Continuing to refer to Figure 4, to obtain magnetic resonance images, a table 22 for supporting the patient moves linearly in the tunnel 60 (edges are shown with dashed lines in figure 4) of the scanner 10 magnetic resonance. In the illustrated example, the tunnel 60 is expanding region, as it is sometimes used to give the tunnel a more "open" feeling, or to shape the magnetic field, or something similar. The patient is usually positioned to receive images of magnetic resonance imaging with anatomical region of interest (indicated by position of the head coil 30 in the specific example of obtaining images of the brain), centered in the field of 24 studies scanner 10 magnetic resonance. Note that when the table 22 to maintain the patient moves through the scanner 10 magnetic resonance, an additional piece of RF cable 32 is drawn from the reel 36. In an alternative arrangement, the radio frequency cable, when the table 22 to maintain the patient is moved to the section 10 of magnetic resonance imaging a segment of the radio frequency cable 42 is drawn into the cassette 46 to tension the slack from the cable.

After image acquisition magnetic resonance imaging table 22 for supporting the patient, transferring the patient is removed from the field of 24 studies scanner 10 magnetic resonance.

Referring to Figure 5, if it is desirable implementation acquiring images of a second modality, the table 22 to maintain the patient moves into a region 26 research system 12 receiving images of a second modality. Note that this gives some flexibility part of the system RF cable. When using a cable 32, moving to a system for obtaining images of the second type of impact is as follows. The cable 32 is attached at the point 62 of the fastening (marked only figure 5) to the edge of the table 22 for supporting the patient. When the table 22 to maintain the patient is removed from the field of 24 studies scanner 10 magnetic resonance (assuming that the images using magnetic resonance carry out first), bobbin 36 takes the slack out of the cable. When the attachment point 62 passes bobbin 36 and toward the system 12 to obtain images of a second modality, bobbin starts to give an additional piece of cable before implementation is to achieve table. Bobbin 36 includes sufficient cable length for the implementation of the "doubling" of the cable along the length of the table, when the table 22 is fully inserted into the region 26 research system 12 receiving images of a second modality. Note that when using this layout, the procedure for obtaining image is the reverse - that is, first is obtaining images of a second modality, and then, obtaining magnetic resonance images.

Continuing to refer to Figure 5, if, on the other hand, use an alternative layout of the cables, then the images of magnetic resonance imaging should be performed first. Then, when the table 22 to maintain the patient moves out of the tunnel of the scanner 10 of the magnetic resonance coil 46 generates an additional piece of cable 42 to effect the movement of the table. However, when the table 22 to maintain the patient continues to move (or move) in the direction of the system 12 to obtain images of a second modality, the cable 42 is extended over all its length. At this point, further movement of the table 22 to maintain the patient in the direction of the system 12 to obtain images of the second type of impact causes automatic disconnecting 44 to detach the cable end 42 of the head coil 30 or from the port, the which are connected to the head coil. Table 22 for supporting the patient's head and the coil 30 continue to move (or move) in region 26 research system 12 receiving images of a second modality to start acquiring images using a second method of exposure. To make it possible, at first, for acquiring images of a second modality, automatic disconnecting 44 may be configured as a joining connection, which allows for automatic connection and disconnection.

Continuing to refer to Figure 5 and continuing to refer to Fig.6, the system 12 to obtain images of a second modality comprises a ring of detectors 68 radiation surrounding the tunnel 69 system for obtaining images of a second modality. Figure 5 shows one module 70 of the radiation detector ring detector 68 radiation for illustrative purposes. 6 depicts a General view of the module 70 of radiation detectors, when viewed from a point inside the area 26 of the study. Module 70 of radiation detectors includes seven tubes 72 of the photomultiplier is located hexagonal and watching the hexagonal scintillator 74. The static magnetic field produced by the scanner 10 magnetic resonance, can negatively affect the operation of the tubes 72 of the photomultipliers. In some variants of the Ah implementation this effect is reduced by providing a magnetic shield for radiation detectors, for example, through the environment, essentially the tubes 72 of the photomultiplier housing 76 of a ferromagnetic material. The housing 76 may be a ferromagnetic body or shell, essentially surrounding a tube 72 photomultipliers, or a thin film of a ferromagnetic covering tube 72 photomultipliers, or something like that. In addition, the housing 76 may reduce the effect of radio frequency radiation from the tubes photomultipliers, which otherwise would adversely affect the sensitive detection system of the magnetic resonance scanner 10 magnetic resonance. To improve radio frequency shielding enclosure, a layer of copper or other non-iron, but with high conductivity material may be used in combination with a ferromagnetic material. The housing 76 is mostly hexagonal in shape, to allow dense packing of the modules 70 in the ring of detectors 68 radiation; however, it can be used by other geometry. If the casing 76, essentially surrounds additionally scintillation crystal 74, then the radio-frequency effect, which can be performed by random events attenuation of radioactivity in the scintillator, also essentially shielded from the scanner 10 magnetic resonance. At least, that portion of housing 76, which is located in front of the detecting radiation surface of the scintillation crystal 74, must be made sufficiently thin to radiation, which is detected (e.g., 511-Kev photons, in the case of the PET scanner) could pass through it, essentially unimpeded.

Referring to Fig.7, in another approach to provide magnetic shielding of the radiation detectors, the modified module 70' includes a tube 72 photomultipliers, individually shielded with individual housings 76', consisting of a ferromagnetic material. Case 76' may be a ferromagnetic outer tube or tubular casing or shell, essentially embodying each of the tubes 72 photomultipliers, or a thin film of ferromagnetic material covering each of the tubes 72 photomultipliers, or something like that. In the embodiment illustrated in Fig.7, scintillation crystal 74 remains unshielded.

Addressing Fig also provides for active magnetic shielding. As shown in Fig, static magnetic field B0created by the scanner 10 magnetic resonance, may, at least partially, be compensated for shielding the magnetic field BScreated clanroyden coils 78 (shown schematically in Fig using the Central point for generating a shielding magnetic field B S), appropriately located in the system 12 to obtain images of a second modality. Because the static magnetic field B0scattering on the tubes photomultipliers is small (typically, about 15 GS, in some hybrid systems), the shielding coil 78 can be a relatively slaboroslye device.

Continuing to refer to Fig, as another alternative, the passive magnetic shielding 76" (shown in Fig using dashed lines), which, essentially, is not covering may be positioned to redirect the magnetic field B0scattering from the scanner 10 of magnetic resonance imaging for radiation detectors 68 in the direction of less influence on the radiation detectors 68. Fig shows lines of magnetic flux redirected using passive magnetic shielding 76"as a dashed line. Passive magnetic shielding 76, 76', 76" can be any ferromagnetic material such as iron, steel, or the like, or a material mu-metal.

In the illustrated embodiments, the implementation, the radiation detectors used tube photomultipliers, which have a relatively high sensitivity to magnetic fields scattering. Typically provides one or more mechanisms 76, 76', 76', 78 magnetic shielding to reduce the magnetic leakage fields from the scanner 10 magnetic resonance detectors 68, 70, 70' radiation system 12 to obtain images of the second type of impact to less than a few Gauss, and the desired reduction depends on the orientation of the field relative to the detectors, in particular to the tubes photomultipliers. However, shielding can alternatively reject lines of magnetic flux to pass parallel to the axis of the anode and cathode of each tube, a photomultiplier tube, which significantly reduces the effect of magnetic field on the operation of the photomultiplier tube. In this case, can be a valid higher regional magnetic field. In other embodiments, implementation, can be used in solid-state detectors, which have a much lower sensitivity to stray magnetic fields. In these embodiments, the implementation of passive and/or active magnetic shielding may be missing.

Referring again to Figure 5, the radiation detectors are associated electronics, such as electronics 80 on the local printed circuit Board that is located together with the modules of the detector of radiation, one or more centralized units 82 electronics, located on the platform (as shown), or deleted, and the like. The scanner 10 magnetic resonance is chuvstvitelnym one or more frequencies of the magnetic resonance. The primary frequency of the magnetic resonance usually represents the frequency with which the proton image. Other frequencies of the magnetic resonance of interest may include spectroscopic frequencies involved in spectroscopy, magnetic resonance, subcustody used for modulation and demodulation of data, magnetic resonance, and the like. The frequency of the magnetic resonance of interest may include, for example, those associated with1H,13C,19F,23Na31P and with other nuclei that exhibit properties of magnetic resonance. For this reason, the effect of radio frequency radiation produced by the electronics 80, 82 system 12 to obtain images of the second type of impact is a significant problem when the inclusion of such system 12 to obtain images of the second type of impact in the same room with 16 RF isolation for the scanner 10 magnetic resonance. However, the effect of radio frequency radiation can be reduced or eliminated, at the same time, still with the placement of electronics 80, 82 in the space 16 with the radio frequency isolation with the scanner 10 magnetic resonance. This can be done by noticing that most of the effects of radio frequency radiation comes from associated with switching aspects electro is IKI. The main sources of switching include (i) switching power sources, such as those used for the operation of the detectors 68 radiation; and (ii) dynamic memory and electronics synchronous digital processing, which are switched at high frequency.

Electronics 80, 82 located in the space 16 with the radio frequency isolation with the scanner 10 magnetic resonance, not necessarily does not include switching power supplies. For example, can be used in linear power supplies, which are not switched at a high frequency and therefore do not have a significant impact of radio frequency radiation. Alternatively, the switching power supply can be external RF shielded space 16, and the power is supplied through the passages of the space 16 with electric filters.

Similarly, electronics 80, 82 located in the space 16 with the radio frequency isolation with the scanner 10 magnetic resonance, not necessarily does not include dynamic memory, synchronously switchable digital electronics, or both, and another. For a typical PET system, mect or CT, the number of detectors is large, numbering in the thousands or tens of thousands, and each detector generates a stream of data that must be preserved. Accordingly, a typical system is PE is, The mect or CT involves much more gigabytes of dynamic memory. In electronics 80, 82, this memory is mainly optionally substituted unsynchronized static memory, such as flash memory or the like, which is not synchronized with a high frequency and, therefore, does not produce significant effects of radio frequency radiation. Similarly, synchronizing synchronous electronic circuit digital processing does not necessarily replaced by the asynchronous electronic circuit of digital processing, or even analog processing circuitry. Alternatively, electronics 80, 82 can be translated into sleep mode, where the synchronization for dynamic memory and other electronics can be turned off and the power supply for detectors 68 radiation disconnected, either manually or under the control of the system during image acquisition magnetic resonance.

In addition or alternatively, the electronics 80, 82 includes other features that reduce the effect of RF radiation on the scanner 10 magnetic resonance. Noticing that the main problem lies in the highly sensitive detection system of the magnetic resonance scanner 10 of magnetic resonance imaging electronics 80, 82 are not necessarily configured so that the emitted radio frequency, impact, SPE is separated from the Central frequency of the magnetic resonance. The appropriate approach is to use electronics 80, 82 with frequency synchronization and/or frequency switch for switching power sources that are not frequency or frequencies of magnetic resonance and who do not have harmonics at the frequency or frequencies of the magnetic resonance. In addition, electronics 80, 82 optionally includes one or more notch filters configured to block the inevitable generation effects of radio frequency radiation at the frequency or frequencies of the magnetic resonance scanner 10 magnetic resonance which may occur as a result of random thermal noise or anything like that, even in electronics, which is constructed from the frequency of magnetic resonance. In addition, the centralized electronics 82 may include RF shielding 83, essentially surrounding a centralized electronics. Alternatively, the electronics may be located outdoors with 16 RF isolation.

One or more of these approaches (such as the lack of a synchronized memory, no switchable power supply, oscillator, operating at frequencies selected to prevent the effects of radio frequency radiation at the frequency or frequencies magni the aqueous resonance, the use of the respective notch filters, and the like) electronics 80, 82 can be in the same room with 16 RF isolation, and that the scanner 10 magnetic resonance. In the layout figure 1-5, no RF screen located between the scanner 10 of the magnetic resonance system 12 to obtain images of the second type of impact.

Referring to Fig.9, describes another approach to the design of hybrid systems produce images that includes a scanner 10 of the magnetic resonance system 12 to obtain images of the second type of impact in the same room with 16 RF isolation. The hybrid system of Figure 9 includes a bed 14 to the patient, which is located between the scanner 10 of the magnetic resonance system 12 receiving images of a second modality. However, unlike the hybrid system in figure 1-5, the hybrid system in Figure 9 does not contain system 12 receiving images of a second modality that is installed on the rails. Instead, the system 12 to obtain images of the second type of impact is stationary, and is inserted into the bridge 90 between the bed 14 to the patient and the arm 50 of the patient or other support system 12 receiving images of a second modality to provide the path to table 22 for supporting patients who NTA, when moving between the base 20 and the region 26 research system 12 receiving images of a second modality. With the inserted bridge 90, a hybrid system 12 to retrieve images works essentially as a hybrid system for acquiring images in figure 1-5, for obtaining images of the second type of impact.

When the bridge 90 is removed (as shown in Fig.9), there is a space between the system 12 to obtain images of the second type of impact and the bed 14 to the patient. When should be receiving images using magnetic resonance, the bridge 90 is removed, and pull the radio frequency screen 92 is stretched in the space between the system 12 to obtain images of the second type of impact and the bed 14 to the patient. In the illustrated embodiment, retractable radio frequency screen 92 is wrapped around a cylindrical bobbin 94 is installed on the ceiling, in a manner similar to the arrangement of retractable screen for external projector. In other potential options for implementation, retractable radio frequency screen can be installed along a wall and is pulled horizontally in the space between the system 12 to obtain images of the second type of impact and the bed 14 to the patient, podveshivaete on rails on the ceiling or with the help of poles n is the ceiling. In other potential options for implementation, retractable radio frequency screen can be a folding self-sustaining wireless screen, fan-type, which is unfolded and is located in the space between the system 12 to obtain images of the second type of impact and the bed 14 to the patient. RF screen 92 should be flexible or have a flexible connection in the case of system fan type and can be manufactured, for example, of wire mesh, wire fibers or other distributed conductive elements immersed in a flexible plastic sheet or other flexible matrix. Alternatively, the radio frequency screen 92 may be a thin flexible sheet metal, such as aluminum foil type. Pull the radio frequency screen can also be configured in the form of sliding doors, folding doors, or pull configurations.

Pull the radio frequency screen 92 or its variations can also be used in those versions of the implementation, in which the system 12 to obtain images of the second type of impact is mounted on the rails 28 or in which magnetic resonance is performed by the system 12 to obtain images of the second type of impact in the less close (more remote) position, illustrated the dummy in figure 2. If the space is small enough, it also assumes the exception of the bridge 90 and passage table 22 through space (which may be only slightly wider than the width of the radio-frequency screen 92) without bridge. In addition, although in the illustrated embodiment, retractable radio frequency screen 92 extends between the system 12 to obtain images of the second type of impact and the bed 14 for the patient, and other potential options for implementation include the space between the bed for the patient and the magnetic resonance scanner, and pull the radio frequency screen is stretched between the magnetic resonance scanner and a support for the patient. In other prospective options exercise of such a space is not, and instead pull the radio frequency screen is cut to fit the shape of the bed for the patient. RF screen 92 can be moved in its position manually or automatically, based on the position of the system 12 to obtain images of a second modality, the destruction of the bridge 90, initiating operations of the method sequence image acquisition magnetic resonance, or other appropriate mechanism startup.

In some embodiments, implementation, retractable radio frequency screen 92 includes a ferromagnetic Provo is full mesh, ferromagnetic fibers, particles mu-metal or other distributed magnetic material, so that the radio frequency screen also provides magnetic isolation system 12 to obtain images of the second type of impact from the static magnetic field generated by the magnetic resonance scanner. In this case, the screen 92 is moved into place while obtaining images of a second modality, as well as during image acquisition magnetic resonance.

One of the advantages of hybrid systems described here, is compact. Having a bed 14 for the patient between the systems 10, 12 imaging and implementing the approaches described here, to mitigate harmful interactions between the systems 10, 12 receive images, the hybrid system can easily be constructed so that it is inside a typical room with radiofrequency isolation of the type used for maintenance of scanners magnetic resonance. Some typical areas with RF isolation have a floor area of approximately 7x9 meters. In this arrangement, the system 12 to obtain images of the second type of impact is separated from the scanner 10 magnetic resonance distance less than seven meters, and more preferably by a distance of less than four meters, which is sufficient for vstavi the ü bed 14 for the patient.

In a typical arrangement, the linearly moved the table 22 to maintain the patient has a length of approximately two meters along the direction of linear movement in order to comply with the patient-the person. Convenient to area linear movement of the linearly moveable table 22 was made less than five times the length of the table to support the patient in the direction of linear movement, and more preferably it is convenient to make it less than four times the length of the table 22 for supporting the patient. For maximum compactness, the linear region can be made equal to approximately three times the length of the table 22 for supporting the patient; one length of the table corresponds to the loading position of the patient on the table 22 to maintain the patient on the basis of 20; one length of the table corresponds to the movement of the table 22 to maintain the patient in the tunnel of the magnetic resonance scanner and one length of the table corresponds to the movement of the table 22 to maintain the patient in the system for obtaining images of the second type of impact.

The present invention is described with references to preferred embodiments of. Modifications and changes may be others upon reading and understanding the preceding detailed description. It is assumed that the present invention is constructed as including the surrounding all such modifications and changes, insofar as they fall within the scope of the attached claims of the invention or its equivalents.

1. A bed for a patient, comprising:
the base (20)located between the scanner (10) magnetic resonance system (12) acquiring images of a second modality and the second modality is other than magnetic resonance; and
linearly moved the table (22) for supporting the patient, supported by the base and mounted for selective movement in the area (24) research scanner (10) of magnetic resonance imaging for imaging magnetic resonance, and in the field (26) research system (12) acquiring images of a second modality, for acquiring images of a second modality, and the area of the linear movement of the linearly moveable table is less than five times the length of the table to support the patient in the direction of linear movement.

2. A bed for a patient according to claim 1, where the base (20) includes:
height adjustment, making it possible to adjust the height of the table (22) for supporting the patient, at least when the table is to maintain the patient is located between the scanner (10) magnetic resonance system (12) acquiring images of the second type of impact.

3. A bed for a patient according to claim 1, where the linear region is about moving linearly moveable table (22) is approximately equal to or less than four times the length of the table to support the patient in the direction of linear movement.

4. A bed for a patient according to claim 1, additionally containing:
radio frequency device or device port located along with the table; and
RF cable (32, 42)having a first end connected with the radio frequency device or device port.

5. A bed for a patient according to claim 4, further including:
tension device (36, 46)made with the possibility of stringing SAG RF cable (32, 42).

6. A bed for a patient according to claim 4, where the radio frequency device or device port includes:
RF local coil (30) or port for attaching a radio frequency coil.

7. A bed for a patient according to claim 4, further including:
attachable connection or automatic disconnect (44), which, at least, disconnects the first end of the RF cable (42) from the radio frequency device or device port, sensitive to the movement of the table (22) to maintain the patient at a sufficient distance in the direction of the field (26) research system (12) acquiring images of the second type of impact.

8. A bed for a patient according to claim 4, where the RF cable (32) passes under the linearly movable table (22) for maintaining the patient is well and has its first end, remaining connected to the radio frequency device or device port as when a table for supporting the patient moves in the field (24) research scanner (10) magnetic resonance, and then, when the table is to maintain the patient moves in the field (26) research system (12) acquiring images of the second type of impact.

9. A bed for a patient according to claim 1, where the system (12) acquiring images of the second type of impact is mounted for translational movement relative to the base (20) parallel to the direction of linear movement moved linearly table (22) for supporting the patient.

10. A hybrid system for retrieving images containing:
the scanner (10) magnetic resonance;
the system (12) acquiring images of a second modality, separated from the scanner magnetic resonance space, less than four meters, and the second type of impact is other than magnetic resonance; and
the bed (14) for the patient located at least partially in the space between the magnetic resonance scanner and system for obtaining images of a second modality, and a bed for a patient includes a base (20)located between the scanner (10) magnetic resonance system (12) acquiring images of the second method environmenta what I as well as supported and connected with the base linearly moved the table (22) for supporting the patient, mounted for linear movement in the area (24) studies of the magnetic resonance scanner to obtain images of magnetic resonance imaging in the field (26) research system for obtaining images of a second modality, for acquiring images of the second type of impact.

11. A hybrid system for acquiring images of claim 10, further comprising:
rails (28), on which is installed the system (12) acquiring images of a second modality, and rails make it possible to adjust the position of the system for obtaining images of a second modality with respect to the scanner (10) magnetic resonance along the direction of linear movement.

12. A hybrid system for retrieving images according to claim 11, in which the system (12) acquiring images of a second modality has its working position on the rails (28)in which region (26) research system for obtaining images of a second modality overlaps with the area (48) of the bed (14) for the patient, and a non-operating position on the rails, in which field of study system for obtaining images of a second modality does not overlap with any section of the bed for the patient.

13. The hybrid system p is taking images of claim 10, additionally includes:
space (16) with radiofrequency insulation inside the scanner (10) magnetic resonance imaging system for obtaining (12) images of the second type of impact and the bed (14) for the patient.

14. A hybrid system for retrieving images according to claim 10, in which linear movement of the linearly moveable table (22) is less than five times the length of the table to support the patient in the direction of linear movement.

15. A hybrid system for retrieving images according to claim 10, in which the system (12) acquiring images of a second modality includes a system for acquiring images using positron emission tomography (PET).

16. The hybrid system to retrieve images from § 15, in which no RF screen located between the scanner (10) magnetic resonance system (12) acquiring images using positron emission tomography.

17. A hybrid system for retrieving images according to claim 10, in which the system (12) acquiring images of a second modality comprises detectors 68, 70, 70') of radiation for detecting at least one object from a high-energy particles and photons of high energy.

18. A hybrid system for retrieving images according to claim 10, in which the system (12) acquiring images of the second way the impact is moved between the close position and less close position, defining the space between the system for obtaining images of the second type of impact and a bed (14) for the patient.

19. The hybrid system to retrieve images from p, in which the space between the system (12) acquiring images of the second type of impact and a bed (14) for the patient is of such a size to allow passage between the system for obtaining images of the second type of impact and a bed for the patient when the system is acquiring images of the second type of impact is less close the position.

20. The hybrid system to retrieve images from p in which region (26) research system (12) acquiring images of the second type of impact is overlapped with the area (48) of the bed (14) for the patient when the system is acquiring images of the second type of impact is in the closer position.

21. A hybrid system for acquiring images of claim 10, further including:
attachable connection or automatic disconnect (44) which, at least, disconnect the RF cable (42) in response to movement of the table (22) to maintain the patient at a sufficient distance in the direction of the field (26) research system (26) to obtain images of the second type of impact.

22. The way of modernization of the hybrid system and get the views of, includes:
the placement of the system (12) acquiring images of the second method of exposure indoors (16) with radiofrequency insulation that contains the scanner (10) magnetic resonance together with the system for obtaining images of a second modality that is separated from the magnetic resonance scanner some space, less than seven meters, and area studies (24, 26) of the respective systems of the magnetic resonance scanner and acquiring images of a second modality, installed linearly, and the second type of impact is other than magnetic resonance; and
accommodation bed (14) for the patient, at least partially, in the space between the magnetic resonance scanner and system for obtaining images using the second method of exposure with a linearly movable table (22) for maintaining the patient's bed for a patient mounted for linear movement in the area (24) studies of the magnetic resonance scanner to obtain images of magnetic resonance in the region (26) of the receipt of the second modality for acquiring images of the second type of impact.

23. A bed for a patient, comprising:
the base (20)located between the scanner (10) magnetic resonance system (12) acquiring images of a second modality, preemptory the route of exposure is different, than magnetic resonance;
floating table (22) for supporting the patient, supported by the base and mounted for selective movement in the area (24) research scanner (10) magnetic resonance for imaging magnetic resonance, and in the field (26) research system (12) acquiring images of a second modality for acquiring images of a second modality;
radio frequency device or device port located along with the table; and
RF cable (32, 42)having a first end connected with the radio frequency device or device port.

24. A bed for a patient according to item 23, further including:
tension device (36, 46)made with the possibility of stringing SAG RF cable (32, 42).

25. A bed for a patient according to item 23, further including:
automatic disconnect (44), which disconnects the first end of the RF cable (42) from the radio frequency device or device port in response to movement of the table (22) to maintain the patient at a sufficient distance in the direction of the field (26) research system (12) acquiring images of the second type of impact.

26. A bed for a patient according to item 23, where the RF cable (32) passes under the linearly movable table (22) to support the survival of the patient and has its first end, remaining connected to the radio frequency device or device port as when a table for supporting the patient moves in the field (24) research scanner (10) magnetic resonance, and then, when the table is to maintain the patient moves in the field (26) research system (12) acquiring images of the second type of impact.

27. A hybrid system for retrieving images containing:
the scanner (10) magnetic resonance located in the room with the radio frequency isolation;
the system (12) acquiring images of a second modality that is located in the room with the radio frequency isolation together with the magnetic resonance scanner and the second modality is other than magnetic resonance; and
the bed (14) for a patient located in a room with a radio frequency isolation, at least partially, in the space between the magnetic resonance scanner and system for obtaining images of a second modality, and a bed for a patient includes a table (22) for supporting the patient to transfer the patient in the area (24) studies of the magnetic resonance scanner to obtain images of magnetic resonance imaging in the field (26) research system for obtaining images of a second modality for acquiring images of the second type of impact.

28. Hybrid system for obtaining images according to item 27, in which the system (12) acquiring images of a second modality has a working position in which the region (26) research system for obtaining images of a second modality overlaps with the area (48) of the bed (14) for the patient, and a non-operating position in which the survey system for obtaining images of a second modality does not overlap with any section of the bed for the patient.

29. Hybrid system for obtaining images according to item 27, in which the system (12) acquiring images of the second type of impact can be moved from the scanner (10) magnetic resonance in such a way that there is space between the system (12) acquiring images of the second type of impact and a bed (14) for a patient having such a size to allow passage between the system for obtaining images of the second type of impact and a bed for the patient.

30. A bed for a patient, comprising:
the base (20)located between the scanner (10) magnetic resonance system (12) acquiring images of a second modality and the second modality is other than magnetic resonance; and
table (22) for supporting the patient, which are supported by and connected with the base and movable in the first direction about the Asti (24) research scanner (10) magnetic resonance to produce images of magnetic resonance, and moved in a second direction opposite the first direction in the area (26) research system (12) acquiring images of a second modality for acquiring images of the second type of impact.

31. A bed for a patient according to item 30, where the table for support can move from one region (24, 26) studies in other research areas by moving the table to the total distance is less than approximately three times the length of the table.



 

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3 ex

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4 cl, 6 dwg

FIELD: medicine.

SUBSTANCE: invention relates to NMR-spectroscopy and magnetic-resonance tomography. Method of estimation lies in transmission of visualising sequence of RF MRT-pulses of excitation, configures for excitation of hyperpolarised 129Xe of dissolved phase in the area of lung gas exchange in the subject and generation of three-dimensional MRT-image of 129Xe area of lung gas exchange, associated both with compartment of red blood cells (RBC) and with compartment of the barrier. Visualising sequence of RF pulses is carried out with application of pulse with selected frequency, which excites resonances of both RBC compartment of polarised 129Xe of dissolved phase and of barrier compartment, but not the resonance of 129Xe gas phase for accumulation of RBC signal with 90 degree difference of phases with barrier compartment signal. System of MRT-scanner contains MRT-scanner with MRT-receiver with a set of channels, including the first channel, formed with possibility to receive data of signal of 129Xe REBC of RBC compartment of patient's lung, and the second channel, formed with possibility to receive data of signal of 129Xe of patient's lung barrier compartment. System of data processing for generation of MRT-images of 129Xe contains computer-readable medium of data storage, which has computer-readable code of programme, which contains codes of generation of RF pulses of excitation, obtaining MRT-signal of dissolved phase 129Xe, associated with reds blood cells in the area of lung gas exchange, obtaining MRT-signal of dissolved phase 129Xe, associated with alveolar-capillary barrier in lung, generation of 3D MRT-image, attenuation of signal on image being connected with reduced ability to alveolar-capillary transfer.

EFFECT: application of invention makes it possible to increase tomography self-descriptiveness due to possibility to distinguish between two compartments: barrier gas/blood.

20 cl, 14 dwg

FIELD: electricity.

SUBSTANCE: electrically conducting line (13) for transmission of magneto-resonance signals between transmitting and/or receiving coil (11) and transmitting and/or receiving unit (12) contains multiple portions (31) of conductor, connected by transformers (32, 33) only having transformer impedance ZL and located between two adjacent portions of conductor. Herewith, to match powers of two transformers (32, 33) located on opposite ends of conductor portion (31) the mentioned conductor portion (31) has low impedance Z0 of conductor portion and/or high dielectric constant εr and where length l of the mentioned conductor portion (31) is determined from: where β=2π/λ, and λ0 - wavelength of magnetic-resonance signals in vacuum.

EFFECT: preventing generation of in-phase signal on cable armoring.

8 cl, 4 dwg

FIELD: physics.

SUBSTANCE: invention relates to combined systems for obtaining images via magnetic resonance (MR) and positron emission tomography (PET). The hybrid imaging system has a magnetic resonance scanner (10) and a system (12) for obtaining images using a second technique, lying in the same space (16) isolated from high frequencies. The system for obtaining images using a second technique has radiation detectors (68, 70, 70') which are made such that they pick up at least one of the following radiations: high-energy particles and high-energy photons. In certain versions of the invention, a retractable screen (92), which protects from high frequencies, can optionally be stretched in the gap between the magnetic resonance scanner and the system of obtaining images using a second technique. In certain versions of the invention, shimming coils (52) are placed together with the magnetic resonance scanner and they are configured to compensate for distortion of the static magnetic field of the magnetic resonance scanner caused by the proximity the system for obtaining images using a second technique.

EFFECT: high noise immunity and design of a compact hybrid system.

30 cl, 9 dwg

FIELD: physics.

SUBSTANCE: calibration wider-spectrum signal is received in wireless line between RF-coil and relevant wireless transceiver. Frequency-dependent signal power characteristic is estimated on basis of calibration signal in wireless line between RF-coil and relevant wireless transceiver. Thereafter, said estimation is used to correct frequency-dependent signal power for wider-spectrum signals that comprise data obtained in analysed band to generate frequency-dependent compensated data signals to be transmitted in relevant wireless transceiver.

EFFECT: higher efficiency and quality of data exchange in MRI systems.

20 cl, 4 dwg

FIELD: medicine.

SUBSTANCE: device for dissolution of solid polarised material comprises a cryostat designed to enclose a container for a solid polarised material sample, a nuclear dynamic polarisers containing magnetic field generators, a SHF generator, a wave guide and a SHF chamber designed to arrange in said cryostat the nuclear spins of said solid material to be polarised in the specified container; additionally, it contains a solvent supplier into said container to ensure dissolution of solid polarised material when mentioned container is enclosed in said cryostat in the intense magnetic field of said magnetic field generators.

EFFECT: possibility to transfer of solid polarised material into a solution with minimum loss of polarisation.

12 cl, 7 dwg

FIELD: physics, nuclear physics.

SUBSTANCE: invention relates to nuclear magnetic resonance (NMR) and electron-paramagnetic resonance (EPR) methods and can be used in biology, medicine, chemical and nuclear power industries. In compliance with this invention, only one inductor is used made up of one, two or several turns of twisted or parallel wires to irradiate a specimen by pulsed attenuating alternating magnetic field without using the second (permanent) magnetic field. Note here that, in the presence of alternating magnetic field reaching infinite positive and negative magnitudes in the ranges between consecutive positive and negative attenuating magnitudes passing through zero value during one magnetic pulse, are activated in the specimen to produce NMR and EPR.

EFFECT: method of atomic nuclei and/or electrons activation.

14 cl, 8 dwg

FIELD: melting solid polarized nuclear magnetic resonance specimens.

SUBSTANCE: proposed method for melting solid hyperpolarized specimen involves use of device that has means for hyperpolarization of solid specimen at low temperature in magnetic field produced by mentioned device that also has means 4, 8 for melting mentioned hyperpolarized solid specimen; in addition it has coils 31-31" for NMR analysis of mentioned molten specimen disposed in mentioned cryostat; means for melting mentioned hyperpolarized solid specimen are disposed inside mentioned cryostat in said magnetic field.

EFFECT: improved method and device for producing highly polarized specimens, as compared with prior art.

11 cl, 3 dwg

FIELD: dissolving solid hyperpolarized material for nuclear magnetic resonance analysis.

SUBSTANCE: proposed device for dissolving solid polarized material has cryostat for holding solid material, solid material dissolving means, and means for producing magnetic field; novelty is that it is provided with means for dissolving solid material and that means for producing magnetic field is designed to expose material to strong magnetic field when it is being treated by each of polarization means and its dissolving means. Proposed method for producing solution incorporating dissolved polarized material includes placement of solid material in cryostat, polarization of this material inside mentioned cryostat, and dissolution of mentioned polarized material in solvent when this polarized material is located inside mentioned cryostat.

EFFECT: reduced polarization loss when solid material is turned to liquid phase.

17 cl, 7 dwg

FIELD: magnetic-resonance visualization.

SUBSTANCE: method for researching a sample, preferably, body of human or animal, using magnetic resonance method, includes: 1) production of magnetic resonance of visualization agent, containing at least one accumulation nucleus in its molecular structure with nonzero nuclear spin; 2) polarization of nuclear spin of aforementioned accumulation nucleus in aforementioned magnetic resonance visualization agent; 3) injection of this polarized magnetic resonance visualization agent into aforementioned sample; 4) affecting aforementioned sample by a series of pulses, which causes transfer of polarization from aforementioned accumulating nucleuses to at least one type of detecting nucleuses with nonzero nuclear spin, where gyro-magnetic ratio of aforementioned detecting nucleuses exceeds gyro-magnetic ration of aforementioned accumulating nucleuses; 5) affecting aforementioned sample by emission with frequency selected to excite nuclear-spin transitions in selected detecting nucleuses; 6) detection of magnetic resonance signals of aforementioned sample; and 7) possibly, receipt of image, data about streams dynamics, diffusion data, perfusion data, physiological data or metabolic data on basis of aforementioned detected signals.

EFFECT: improved quality of nuclear magnetic-resonance displaying of object.

6 cl, 1 dwg

The invention relates to a method for contrast agent for magnetic resonance research and device for implementing the method

FIELD: physics.

SUBSTANCE: invention is a method of generating deceleration radiation with pulse-by-pulse energy switching and a radiation source for an inspection system with a pulse-by-pulse energy switching system between two controlled values, with independent control of the dose rate for each energy. The source has local radiation protection, provides for each energy small beam diameter on the deceleration target, high percentage of particles captured in the acceleration mode and small width of the energy spectrum. The source is based on an accelerating structure with a standing wave, which is powered by a compact multibeam klystron with low beam voltage and focused by permanent magnets. Pulse-by-pulse switching of the value of the energy of the accelerated electron beam between two values at the same frequency is achieved by switching the value of input power of the klystron from pulse to pulse and, consequently, the output power of the klystron and amplitude of the field in the accelerating structure. The required dose rate is ensured by switching from pulse to pulse voltage of the control electrode of the electron gun and, consequently, the value of the current of the beam injected into the accelerating structure.

EFFECT: simple system, reduced dimensions and high reliability of the radiation source.

20 cl, 5 dwg

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