SUBSTANCE: phantom test consists of two parts being a single whole. One part has a constant longitudinal height, while the other part has a continuously varying longitudinal height forming a wedge. On the side of the wedge, there are calibrated notches.
EFFECT: more accurate determination of the bone mineral density by X-ray images formed with the help of a general-application X-ray machine, and simplifying the design.
The invention relates to fluoroscopy, more specifically to the elements of medical radiology.
One of the most important indicators of various bone pathologies of the person determining (especially in the elderly) the occurrence of diseases such as osteoporosis and osteopenia, is a mineral bone density (BMD). X-ray study of the internal structure of the bone tissue, as it is known, is carried out by observing the x-ray photographic film pattern of the intensity distribution of x-ray radiation transmitted through the object of study. When using x-ray film assessment of BMD along with other parameters is performed according to the degree of blackening areas of the image in the characteristic regions of the human body. However, the degree of blackening is not only dependent on the density of the bone material, but also on a substantial number of additional factors. Chief among them are the intensity of x-ray radiation source, the characteristics of the x-ray photographic film, in particular, its contrast, and sensitivity to x-rays, the conditions of subsequent processing in proyavlyaya-fixing solutions, the chemical composition and purity of the solution, the treatment temperature and some other factors that change from one picture to another.
On practices� when using x-ray machines General application to monitor the impact of all the above factors, acting on film in a specific session for x-ray image, is not possible. So, in essence, compensation accounting use different calibration elements have, in particular, to medical x-rays near the diagnosed object. Such elements have the name of the test phantoms (G. V. Chizh, palaiko J. F. "Evaluation of quality characteristics of medical x-ray films. Instruction for use", the Ministry of health of the Republic of Belarus, 2003, 26 p.).
In x-ray machines General application as calibration elements are often used n-speed test-phantoms in the form of stepped wedges, made of a material absorbing x-ray radiation, where n is the number of steps (EN 2320267 S2 of 27.03.2008, EN 2177724 C2 of 10.01.2002). The height of each step in the direction of passage of x-rays determines the degree of blackening of x-ray film for a field relevant to that degree. The equivalent value of BMD for each stage in a known material of the wedge is determined by calculation or experimentally known methods. Thus, knowing the coordinate of each stage from the beginning of the wedge, and comparing the degree of blackening of steps with a blackened areas on the x-ray image of diagnostiche�wow medical facility you can determine BMD for these areas. The number of stages is chosen from the required resolution, which is necessary to determine the degree of blackening of the film, and therefore, the resolution with which you want to measure BMD in the diagnosis of medical facilities.
Step wedge test phantoms are typically made from copper or aluminum alloys and are manufactured by many firms. For example, from an Internet publishing company Margraf Dental Mfg Inc. known 9-step wedge test phantom, which can be used to calibrate x-ray densitometers.
Also known information about the test phantom in the form of n-stepped wedge and assessment of BMD using it in children with bone pathologies (Ziatdinov N. In. "Clinical-diagnostic value of determination of zinc, chromium and strontium in various forms of rickets in children" - the Dissertation on competition of a scientific degree of candidate of medical Sciences, Karaganda state medical Academy, Kazan, 2001).
The closest in design to the claimed invention is a graded n-step wedge described in (EN 2177724 C2 of 10.01.2002), which is selected as a prototype of the claimed invention. This wedge includes n-stage element, made of a material absorbing x-ray radiation, and optionally contains n records, fully absorbing x-ray radiation and having a length equal to the width of STU�Yeni, a width less than the width of the step. The first plate is located adjacent to the wedge from the degree with the lowest elevation, and the remaining n-1 plates are installed at appropriate stages of the wedge close to the risers, the next higher level.
Known test phantom in the form of a graded n-step wedge has some significant shortcomings.
Chief among these is the limited ability to determine the exact values of BMD for areas having a degree of blackening equal to the spacing between the steps of the wedge. Therefore, to detect a continuous distribution of BMD at all points of the diagnosed region fails. In this case, the value of BMD is determined by interpolation between the values of adjacent stages that may not correspond to the real value of BMD for the corresponding points in the diagnosed region.
The second drawback occurs when to the picture (due to carelessness of the staff or other circumstances) gets only a thin part of the wedge and the degree of blackening in the picture is the most delicate steps of the wedge is so great that it coincides with the blackening of the film, due to the background. In this case you cannot determine which levels are visible in the picture (not possible to determine the coordinates of these steps) and therefore n�, one can evaluate the corresponding BMD values for the areas of interest of the object.
In addition to these drawbacks graded n-step wedge, which is selected as a prototype, is complex in construction, because it contains n additional fully absorbing x-ray radiation fins, each of which you want to set on the steps of the wedge in a certain way.
Patent-pending test-phantom does not contain these shortcomings.
The technical result of the invention is to increase the accuracy of determining the mineral density of bone tissue on x-ray images obtained by x-ray machines General use and simplifying the design.
Solvable problem in the proposed test phantom made of a material absorbing x-ray radiation, is achieved by the fact that its shape is composed of two parts forming a unified whole, and one part has a constant height in the longitudinal direction, and the other part has a continuously changing pitch in the same direction, forming a wedge, while on the side of the wedge are made of grooved cutouts. The geometrical dimensions of the test phantom are known in advance. Therefore, even with incomplete ingestion of a test phantom at the picture and match the degree of blackening the most thin part of the wedge with the background, the beginning of the wedge and, consequently, the number of any visible cut easily ODA�delaude, that allows you to define and coordinate of each point of the wedge, visible in the picture, and therefore, the equivalent value of BMD for her. Comparing the blackening of the film for the points of the wedge with the blackening of the film for the areas of interest of the medical object, you can determine BMD for these areas.
Fig.1 is a diagram of the patent test phantom.
Fig.2 presents a 9-step wedge test phantom firms Margraf Dental Mfg. Inc.
Fig.3 shows a photograph of the experimental sample are patenting a test phantom.
Fig.4 shows a computer image of the diagnosed medical object and the image of the test phantom beside him.
Fig.5 shows a graph of the equivalent BMD values obtained with the help of a computer program for points in the wedge part of the test phantom, which runs the track, made by the operator on a computer image of the test phantom.
Fig.6 shows the diagnostic object image with the alignment performed by the operator on the diagnosed medical facility,
Fig.7 shows a continuous distribution of BMD points along this route.
The invention is illustrated as follows.
The proposed test phantom of Fig.1 consists of two parts, one of which is 1 in the longitudinal direction has a constant height, and the height of the other part 2 �ararauna decreases, forming a wedge. Both parts are a single unit made of a material absorbing x-ray radiation. The test phantom also contains on the side of its wedge portion grooved cutouts 3. Their primary purpose is to facilitate the measurement of the coordinate of any point of the wedge and, consequently, BMD to that point even in the case of coincidence of the degree of blackening of the most thin part of the wedge with the background and incomplete contact with a picture of the whole test phantom.
The experimental sample are patenting a test phantom, shown in Fig.3, is provided with lugs 4, made of aluminum angles that facilitate maintenance staff to correct the orientation of the test phantom in obtaining x-ray image diagnostic object. In addition, parts of the test phantom with a constant height, is a through hole 5 for quick identification numbers corresponding to the calibrated neck.
Consider patenting a test phantom to use, which is as follows. After fabrication and prior to use of the test phantom is calibrated equivalent BMD values for each height of its wedge part and, consequently, for each point of this part. Such a calibration can be made by known calculation methods are described, for example, (Not T. A. etc., Bulletin of the center, Siberian division of the Russian Academy of medical Sciences, 2006, No. 5 (51), pp. 46-49), or experimentally certificated measuring densitometers.
When receiving x-ray image for medical diagnostic object test phantom feature next to the object. On x-ray film simultaneously recorded image of the object and the image of the test phantom. Therefore, all factors affecting densitometric properties of the film (in particular, on the degree of blackening), including the parameters of x-ray radiation, in the same way will affect the image of the object and the image of the test phantom. After chemical treatment and drying of x-ray film is scanned, allowing you to get a computer diagnostic object image and the test phantom. In this image compares the degree of blackening of the plots to be diagnosed of the object and plots of the wedge. The equality of the degree of blackening of the site to be diagnosed of the object and the area of the wedge-like portion of the test phantom allows you to define the desired BMD footage diagnosed object.
Using the proposed test-phantom and the corresponding software (e.g., Voronov V. I., Voronov T. V. "the Program processing digital x-ray images" // Certificate of trade registration of a design No. 6635 dated 20.07.2006, the Branch Fund of algorithms and programs (OFFICE�P) of the Federal Agency for education), it is possible to measure BMD in automatic mode for all significant areas of the object. No significant areas are characterized by overexposure or exposure underexposure and overexposure or underexposure of the film in the processing solutions and are usually ignored in the analysis image. The software allows you to enable calibration values for BMD of the material of the wedge, as well as settings for height, length and calibrated cut.
An example of using the proposed test-phantom together with a computer program for processing digital x-ray images is illustrated in Fig.4-7.
Fig.4 shows a computer image of the diagnosed medical object and the image of the test phantom caught on tape in this case is not fully. The density of blackening of the thin wedge part of the test phantom coincides with the density of the background so that to define the beginning of the wedge only this part is impossible. However, on the part of the test phantom with a constant height, to determine its beginning is not difficult. On the wedge part of the test phantom is visible calibration track (white line) performed by the operator on the image using the mouse. Fig.5 shows a computer generated graph is equivalent to the BMD values for all points of this route, bounded top and bottom marginal not significant �velichinami BMD.
Fig.6 shows the diagnostic object image with the alignment performed by the operator along the area of interest on the diagnosed medical facility, and Fig.7 shows a continuous distribution of BMD points along this route. The value of BMD is determined at any point of the track, which is held by the operator in an area of interest.
The test phantom, made of a material absorbing x-ray radiation, characterized in that its shape is composed of two parts forming a unified whole, and one part has a constant height in the longitudinal direction, and the other part has a continuously changing pitch in the same direction, forming a wedge, while on the side of the wedge are made of grooved cutouts.
SUBSTANCE: invention refers to medicine, particularly to gastroenterology, pathologic physiology, and concerns simulating acute pancreatitis. To this effect, the method involves ligaturing the main truck of the excretory duct of the pancreas, administering an aggressive solution into the pancreatic duct system, and removing the ligature. The aggressive solution represents 1% chenodeoxycholic acid with 5% sodium hydrogen carbonate in an equal proportion in an amount of 0.3-0.5 ml at 10-15 mg/kg of the animal's body weight.
EFFECT: method enables developing a model of acute fatty, hemorrhagic or mixed pancreatitis in the animal that makes it applicable for improving the known methods for conservative and radical methods of treating.
SUBSTANCE: invention refers to medicine, particularly to ophthalmology, and concerns simulation in vivo of cortical cataract. That is ensured by a double-side surgical sympathectomy by excising a superior cervical sympathetic ganglion.
EFFECT: by simplicity and effectiveness of modulation, the method provides forming the cortical lens-form opacity, which is morphologically and immunohistochemically identical to lens cell changes in age-related lens opacity in a human.
6 dwg, 2 tbl
SUBSTANCE: during the trial rabbits are given the inhibitor preparation lynestrenol in vivo endogastrically with the daily dose of 110 mkg/kg of animal body weight in the course of 14, 21 or 28 days.
EFFECT: invention makes it possible to use lynestrenol as positive control of lower activity of glycoprotein-P for prediction of inclusion of studied medicinal agents into substrates of a transporter protein.
SUBSTANCE: cecum lymphoma is modelled by the introduction of 2,4,6-trinitrobenzosulfonic acid to a rat in a dose of 0.1-0.15 ml, diluted in 0.1-0.15 ml of a 50% ethanol solution. Introduction is realised into a submucosal layer of the cecum cupola 2-3-times daily for 2-3 weeks.
EFFECT: creation of an adequate model of the cecum lymphoma.
SUBSTANCE: to correct pathologic changes in the condition of viable offspring under a cytostatic impact the medication glutoxim is introduced to female rats in a dose of 50 mcg/kg 5 days before and 5 days after the introduction of the cytostatic medication vepesid. The latter is introduced once intravenously in a maximal tolerable dose, equal to 30 mg/kg. It has been established that glutoxim can be applied as means for the correction of pathologic changes in the viable offspring of rats, obtained from coupling 3 months after the cytostatic impact.
EFFECT: application of glutoxim as the means of corrective therapy makes it possible to increase efficiency and reduce its side effects.
SUBSTANCE: method is realised by the intravenous allogeneic transplantation of multipotent mesenchymal stromal cells (MMSC) and hematopoietic stem cells (HSC) to laboratory mice one hour after irradiation. HSC are obtained from the placenta of female mice at the 14-day gestation term. MMSC are introduced in a dose of 6.5 mln cells/kg, with HSC being introduced in a dose of 400 thousand cells/kg.
EFFECT: invention makes it possible to extend the arsenal of means, capable of providing the regeneration potential of the spleen tissues, as well as to increase the regeneration of main morphometric spleen indices after exposure to a radiation load.
SUBSTANCE: melanin having water-solubility of at least 80% and an paramagnetic centre concentration of at least 8·1017 spin/g is administered orally into the animals having been exposed to the radiation in a dose high enough to cause a spinal radiation injury; melanin is administered after dissolved in distilled water in the effective concentration. Melanin water is used as drinking water for the mice having been exposed to single and fractionated acute radiation, which is able to cause acute radiation disease. Melanin water is taken from the 1st to 30th day following the single radiation, or from the 1st day of the fractionated radiation to the 30th day on completion of the radiation.
EFFECT: higher survival rate, faster recovered haemopoiesis, body weight and orientation and motion activity.
7 tbl, 5 ex
SUBSTANCE: invention refers to medicine, namely to animal's behavioural physiology. The orientational-exploratory and locomotor behaviour in rats is rated with an underlying developing acquisition of a food-producing skill by differentiating an animal's motion path in a batwing-shaped labyrinth. The rating procedure is based on the following forms of motor actions: movement to the labyrinth loci without a food reward; purposive movement to the locus with the food reward; exploratory travelling through all the labyrinth landings; movements to the locus contra lateral with the food reward; multiple movements between the two labyrinth loci; freezing behaviour in the start position.
EFFECT: method enables increasing the investigation reliability that is ensured by a multiple assessment of the central nervous system functions.
2 cl, 1 tbl, 1 ex, 6 dwg
SUBSTANCE: method includes sampling bone blocks with a porous wire material to be analysed, fixation of the bone tissue with the porous wire material, decalcination, degreasing, dehydration, pouring the said tissue, preparation of cuts, staining and histomorphometry. Before or after the fixation of the bone tissue with the analysed porous wire material and before or after decalcination search and fixation of an edge wire element of the porous wire material in the bone block is carried out. Untwisting of the porous wire material from the bone block is performed by the method of pulling out the edge wire element. An analysis of macropreparations is carried out when pore spaces of the porous wire material are emptied. After that, the tissues are sampled from the emptying pore spaces, including the sampling and analysis of intra-pore fragments.
EFFECT: possibility of the qualitative and quantitative estimation of histomorphometric parameters of intra-pore tissues in the entire volume of an implant.
3 ex, 1 dwg
SUBSTANCE: general anaesthesia is performed. A skin incision 1.5-2 cm long is made with incising the skin, subcutaneous fat and fascia. The muscles attached to an infraspinous fossa of shoulder bone are skeletonised towards a spine; a caudal surface of a scapular spine is skeletonised; a blind bone bed is formed within the scapular spine at an angle of 45° to the surface of infraspinous fossa of shoulder bone. An implant of the analysed material is implanted into the bone bed to achieve primary stability. The wound is closed.
EFFECT: method provides minimum injuries accompanying the wound formation, reduces a risk of the incision wound damage by an animal, makes it possible to perform the surgery on opposite shoulder blade simultaneously, ensures the adequate volume and quality of the bone tissue in the surgical site, prevents the disordered muscular integrity throughout and loss of no more than 1 point of the muscular attachment.
2 dwg, 2 ex
SUBSTANCE: this device comprises X-ray source located on one side of lactic gland and radiation receiver located on opposite side and compression means for lactic gland compression and fixation. Said X-ray source and receive can be turned together relative to compression means, compressed and fixed lactic gland. Additionally, this device includes collimator and controlled diaphragm to shape a narrow beam of X-ray radiation. X-ray receiver is composed of a narrow liner 2D position-responsive X-ray radiation detector in height 20-40 times larger than in width to displace arc wisely discretely with stops along lactic gland in steps equal to X-ray receiver width.
EFFECT: improved diagnostics.
SUBSTANCE: invention refers to medicine, particularly to oncology. A combined scattering spectroscope is used to record a spectral series of the new growth and healthy tissue. A working portion of the spectroscope is placed directly above the examined region at 3-4 mm. Recording the spectra is followed by performing the statistical analysis of the results on a personal computer. Analysing involves identifying two phase signs that are a relation of peak intensities of the combined scattering in the bandwidths 1300-1340 cm-1 and 1640-1680 cm-1 to the bandwidth 1430-1470 cm-1. The combined scattering spectroscopic data obtained by each measurement are presented as a point on a phase plane. The point is found in one of three regions of the phase plane. According as which of the three regions of the plane comprises the point, either melanoma, or basal cell or squamous cell cancer, or no skin growths is diagnosed in the patient.
EFFECT: method enables obtaining objective data enabling differentiating various types of the skin growths, that provides high accuracy of the pre-operative diagnosis.
SUBSTANCE: group of inventions describes an X-ray device, a method of controlling the X-ray device and a computer-readable medium. The X-ray device includes an X-ray imaging device, an arm for supporting the X-ray imaging device, a controller for controlling the X-ray imaging device and the arm. The controller controls a first displacement of the arm such that the X-ray imaging device travels along a first path in a forward direction (F) around an object. The X-ray imaging device captures a first set of images of the object during the first displacement. The controller generates first volumetric data from the first set of images. The controller controls a second displacement of the arm such that the X-ray imaging device travels along a second path in a backward direction (B). The X-ray imaging device captures a second set of images of the object during the second displacement. The controller generates second volumetric data from the second set of images. The controller waits during a given period of time between the first displacement and the second displacement.
EFFECT: use of the invention provides accurate display or recognition of physical features.
14 cl, 6 dwg
SUBSTANCE: invention relates to medicine, traumatology and orthopaedics and is intended for planning operations for elimination of deformations of tubular bones and osteosynthesis in case of their fractures. Radiography of pathological segment of extremity is performed, anatomical axis of tubular bone is built through multitude of points, position of which is determined by method of least squares, after which presence of pathological changes is determined directly by roentgenogram.
EFFECT: method provides reduction of time consumption and radiation exposure for patient, which is especially important for children contingent, method is objective, provides accuracy of preoperative planning.
SUBSTANCE: invention relates to medical equipment for carrying out X-ray examination. The device contains a base in the form of a rectangular vertical truss and two supports. A mobile post in the form of a rectangular truss with the first drive is fixed on the base. A bar with the second drive and an X-ray radiation source is fixed on the mobile post. The device also contains a post of X-ray images in the form of a frame, which has a possibility of rotation by 90°, a receiver of X-ray radiation. To provide rigid connection between the source and the receiver of X ray radiation in the process of exploitation the third drive, three pairs of sliding supports and two pulls are introduced into the device. The post of images is fixed on the truss of the mobile post by means of rigid detachable connection, which makes it possible to perform the examination of patients of a different height after single adjustment of the positioning region, by the synchronous movement of the source and receiver of X-ray irradiation.
EFFECT: invention makes it possible to increase the work productivity and image quality and reduce weight-size parameters.
2 cl, 7 dwg
FIELD: physics, computer engineering.
SUBSTANCE: invention relates to forming a 3D model of vessels of a region of interest of an object. The system comprises at least one image data acquisition device; a data processing unit; a display device; and an interface unit; wherein the image data acquisition device is configured to acquire image data of a region of interest of an object; wherein the processing unit is configured to determine probability values for predefined features in the image data for each picture element; determine the most accurately corresponding predetermined features based on denoted features; calculate object data based on the determined features; and use the calculated object data for additional processes; wherein the display device is configured to display probability values for each picture element of the image data for interaction purposes; wherein the interface unit is configured to denote features in the displayed probability values via user interaction.
EFFECT: high accuracy of forming a 3D model of vessels of a region of interest of an object.
14 cl, 11 dwg
SUBSTANCE: group of inventions relates to medicine, namely to an imaging method and system. The method includes the reception of an image formation data, generated by the imaging system for one scanning, performed with the application of an imaging protocol with parameters based on a set of different imaging procedures. Further, the method includes processing of the imaging data with the application of an algorithm, corresponding to at least one of the set of different imaging procedures, and the presentation of the processed imaging data. The set of different imaging procedures includes colonography, measurement of the mineral density of the bone tissue, evaluation of the adipose tissue and determination of calcium scoring of vessels. The system includes a bank of imaging protocols, the imaging system, a generator of imaging data and a component of the presentation of the processed imaging data.
EFFECT: application of the inventions makes it possible to reduce the radiation dose for the patient during lifetime.
14 cl, 3 dwg
SUBSTANCE: multispiral computed tomography and intravenous angiography in varicose vein disease that is ensured by catheterising a saphena of the examined lower extremity with introducing a non-ionic radiographic pigment therein. That is followed by scanning with forming a three-dimensional image of the veins by means of automatic three-dimensional rendering protocols included into a multispiral computed imaging scanner. The scanning procedure is sequential and two-staged, wherein the first scanning stage is initiated 20 seconds after the radiographic pigment has been introduced with a 30-second breath holding; the second stage of scanning is performed 60 seconds later with the patient breathing freely. The first scanning procedure is directed from the foot to pelvis, while the second one - from the pelvis to foot.
EFFECT: more effective diagnosing of the anatomy of the lower extremity venation by facilitating the interpretation of the obtained results, visualisation, higher quality of the vein image 3D-reconstruction with adequate and uniform filling of the lower extremity venous bed with the radiographic pigment.
1 dwg, 1 ex
SUBSTANCE: method involves recording a teleroentgenogram of both legs, including hip and ankle joints of a patient standing so that his/her legs touching each other at the level of medial malleoli; lower legs are contoured on the teleroentgenogram. A line passing through the centre of pubic symphysis and the most projecting point of an inner contour of the shin bone at the level of an inner shin-bone (SB) ankle is marked to divide the roentgenogram in two. Each of them is turned about the centre of femoral (F) head until the most projecting point of the inner contour of femur is placed on a line perpendicular to a bispinal line. That is followed by separating three complexes, wherein the complex I comprises the outer and inner contours of the extremity above the level of expected osteotomy, femoral skiagram and a proximal fragment of the SB. The complex II includes the inner contour of the shin bone below the osteotomy level and skiagram of a distal fragment of the SB. The complex III comprises the outer contour of the shin bone and fibular bone (FB) skiagram. valgisation and medialisation of the distal fragments of the SB and FB bringing down are simulated in stages. When simulating the valgisation, the complexes II and III are turned about an intersection point of an outer cortical layer of the SB and a line of the expected osteotomy until the most projecting point of the inner contour of the shin bone on the line perpendicular to the bispinal line. An angle, which both complexes are turned at is equal to a value of the expected valgisation. When simulating the medialisation of the distal fragments of the SB, the complex II is rotated about a point matched to the most distal point of the distal tibiofibular syndesmosis before the most projecting point of the inner contour of the shin bone is placed on a line perpendicular to the bispinal line. A distance between the intersection point of the inner contour of the shin bone with a mechanical axis of the SB before and after rotation of the complex II is equal to a value of the expected medialisation. When simulating FB bringing down, the complexes II и III are moved downwards at a value of the expected distraction. The complex III is rotated about the most distal point of the distal tibiofibular syndesmosis until the most proximal point of the proximal tibiofibular joint is placed on the outer cortical layer of the SB.
EFFECT: accurate planning of the required value of valgisation, varisation or medialisation of bone fragments to provide an ideal leg shape, planning the required value of bringing the fibular bone down to preserve the shin bone width; ensuring the pre-operative assessment of the impact of various surgical options on the biomechanical properties of the lower extremity.
22 dwg, 1 tbl, 1 ex
SUBSTANCE: horizontal tangent lines to crests of the right and left iliac bones are built, the vertical is built from the middle of the sacrum basis and vertical tangents are drawn to the most laterally prominent points of the iliac wings of the right and left halves of the pelvis to their crossing with the horizontal tangents to the crests of the iliac bones. After that, right triangles, angles of which are represented by the most lateral points of the iliac wings and points of crossing of the horizontal tangents to the crests of the iliac bones with the vertical from the middle of the sacrum basis and with the vertical tangents to the iliac wings. A degree of asymmetry of the pelvic ring is determined by the value of the pelvis asymmetry coefficient (PAC), determined by the ratio of areas of the larger right triangle to the smaller one. In case the asymmetry is absent from both sides the PAC value equals 1.0.
EFFECT: method provides high self-descriptiveness of the estimation of the pelvic ring asymmetry degree on postural radiographs in horizontal and sagittal planes, which makes it possible both to compare the patients to each other in the quantitative respect by a degree of their asymmetry and to estimate treatment results.
2 dwg, 3 ex, 1 tbl
FIELD: medicine, cardio-vascular surgery.
SUBSTANCE: one should perform clinical and angiographic testing in two projections. By angiograms one should detect the types of aortal filling defects that form aortal coarctation. One should evaluate isolated aortal coarctation by its angiographic types which should be classified based upon combination of the types of aortal filling defects in two projections. Depending upon the type of aortal coarctation one should perform its catheter balloon angioplasty, stenting of affected area or surgical correction of aortal coarctation. The method enables to match adequate surgical treatment.
EFFECT: higher efficiency of diagnostics.
13 dwg, 2 ex, 3 tbl