Method and device for applying computer-aided thermovision diagnosis in dentistry

FIELD: medicine; medical engineering.

SUBSTANCE: method involves recording wave radiation by means of device for recording wave radiation, building panoramic image in computer memory and on display screen. Infrared imager is used as the device for recording thermal radiation. Two thermovision panorama images are recorded for each jaw. The first thermovision panorama image is built by moving the infrared imager along circular arc in horizontal plane and the second one in a plane arranged at an angle to the horizon. The mandibular thermovision panorama images are built in horizontal and vertical planes and those of the maxilla in the horizontal plane and in a plane arranged at an angle to the horizon. Spatial image is built on display screen using the mandibular and maxillary thermovision panorama images produced in two projections. The device has wave energy receiver being infrared imager capable of moving in vertical, circular direction and changing movement plane inclination angle. The infrared imager is mounted on guide member shaped as circular arc. The guide member changes infrared imager montage plane inclination angle relative to horizontal position.

EFFECT: wide range of functional applications.

6 cl, 2 dwg


The invention relates to the field of medicine and is intended for computer diagnostic imaging in dentistry.

It is well known that the correct diagnosis with the help of modern computer tools are absolutely harmless for the patient. The radiation level monitors modern computers meets the most stringent sanitary standards. Especially early prediction of diseases and their prevention is a completely new field of medicine, some progress which has been in the last decade in connection with the development of computer technology.

Dentistry (from the Greek. stoma, genitive stomatos - mouth and ...logy) is a medical discipline that studies the structure of teeth, causes, treatment and prevention of dental diseases, diseases of the tongue, the mucous membrane of the mouth, jaw and surrounding tissues of the face and neck; the tasks of dentistry also includes the development of new materials for filling teeth and prosthetics. The first descriptions of diseases of the oral cavity are given in the writings of the ancient doctors - Sushruta (India), Hippocrates (Greece), Galen, Celsus (Rome) etc. In the 14th century French physician guy de Solyak proposed tool for the removal of teeth, in the late 15th century Italian physician Did Arcale mentioned about them filling gold, lead and tin foil in the 16th century A. Pair of podrobnaya equipment removal, as well as the operation of replantation of the tooth. In the late 17th - early 18th centuries dentist was defined as an independent branch of practical medicine. The founder of dentistry as a scientific discipline is French surgeon Pfoser, in 1728 issued "guidelines for surgery and dentistry", outlining the accumulated knowledge of stomatologii. In the 19th century was an elaborate technique of filling the cavities, the fabrication of dentures. In 1820, the French physician Delabar applied special burs for treatment of cavities; in the 2nd half of the 19th century American dentist Morrison invented the foot drills. In the late 19th and early 20th centuries due to the progress of physiology, biochemistry, pathology, and other disciplines have studied the etiology, pathogenesis and therapy of major dental diseases.

In Russia, the first information about dental doctors refer to the beginning of the 18th century In 1810 by a special law was established with the title "tooth doctor" and a volume of the examination requirements for obtaining this title; in 1829 entitled to practice dentistry were women. In 1881 in St. Petersburg was opened the first school for "exploring the dental art. Until 1917 in Russia was about 20 dental schools; training of dentists and their practice had a private character. In 1883 a weight which e was founded the First society of dentists in Russia" and in the same year - "The society of dentists and doctors involved in dentistry"; then similar societies were organized in Moscow (1891), Kiev, Kharkov, Tbilisi, etc. In 1882 Evjemo-levy released the first special tutorial With. - "Guide to dental science. In the 20th century mean. contribution to the development of C. made work Dev, Ackelsberg and other

After the October revolution of 1917 as part of the Commissariat of public health of the RSFSR was established dental subsection headed by Pgimage. Organized by the Department of dentistry at the medical faculties, courses. In 1921 in Moscow was opened State Institute of dentistry, in 1927 - the same Institute in Leningrad. By 1975, the USSR had 2 dental Institute and 33 of the respective faculty of medical institutions. By 1975, except for dental technicians with special technical education, was about 100 thousand dentists with higher medical education and dentists with secondary medical education (20.4 thousand in 1940). An important role in the treatment and prevention of dental diseases plays a prophylactic medical examination of children, pregnant women, workers employed in enterprises with professional hazards, and other populations. Since 1976, the training of dentists in the USSR terminated and increased training of dentists. Significant on the d in the development of C. made work All, Aigaiou, Igielski, Iageln, Voukourestiou, Tradeco and many others In 1956, organized by the all-Union society of dentists, which in 1968 became an International organization of dentists (established in 1919). Leading scientific institution - the Central research Institute of dentistry (founded in Moscow in 1962). In Russia and other countries dental care is organized in the same way. In most countries, the main place continues to take private practice. The most famous studies in dentistry Ctot, Shteyman, Furbara, Burkova, Earickson (Sweden), Hartwin (USA) and others

In modern dentistry distinguish 4 main sections: therapeutic, surgical, orthopedic, and pediatric dentistry. Therapeutic dentistry. deals with diagnosis, prevention and treatment of dental diseases (dental caries, pulpitis, periodontitis, periodontal disease, diseases of the mucous membranes of the oral cavity. Tasks of the dental surgery - not only the teeth but also operations on the maxillofacial region regarding inflammation, congenital and acquired defects of the face and jaw, benign and malignant tumors. Prosthetic dentistry examines and addresses of orthopedic and orthodontic (see the Orthodontist is I) methods anomalies, deformations and defects of the jaws and teeth. Pediatric dentistry has evolved in the 20th century, when it began developing methods of treatment of dental diseases, taking into account characteristics specific to each period of the child's development.

In modern complex treatment of dental diseases apply the medication, physiotherapy, ultrasound, high speed burs, special high-frequency installations, etc. Problems and achievements of dentistry reported in the journal of Dentistry (M, 1937; 1931-36 - Soviet dentistry", 1927-30 - "Odontology and stomatology", 1923-26 "Journal of dentistry and stomatology"): abroad - "Caries Research (Basel, s), "Journal of Dental Research" (Chi., since 1919), "Oral Surgery, Oral Medicine and Oral Pathology (St. Louis, 1948) and others

The human body is a unique self-regulating system. Its normal state that determines health, maintains continuous operation, the functioning of internal organs and distributed obscheorganizmenny systems: blood flow, tissue bioenergetics, electrical excitation of nerves, muscles and other Physical fields and radiations of the body is actually operating noise of life support systems. This noise makes it possible to observe the whole body, any organ or system in its own light, and various kinds of fields and radiation on the allow to observe the functioning organism in various aspects. For example, in the first embodiment, when observed in the infrared (thermal) emission spectrum shows the operation of capillary blood flow in the skin, i.e. the temperature of the body surface of the subject. In another, radio thermal reveals bio-energy (metabolic rate) and the flow in the depth of the body, particularly in the cortex, which is more promising, but not yet available due to the high cost of the equipment. In the third, customerlevel, is determined by the heat production of the muscles and internal organs. In the fourth, magnetic, body is the most transparent and show the status of the bioelectric excitation of the brain, heart, muscles and other

This approach, namely obtaining information on private signals of the object in Radiophysics and medicine, called passive remote sensing. On the basis of the experience gained in the Institutes of the Russian Academy of Sciences, and also in a number of enterprises developing modern, high-tech medical equipment, created a new generation of medical devices and methods of functional diagnostics based on dynamic mapping of all physical fields and radiations of the human body: electric, magnetic, electromagnetic, infrared, radio thermal, acoustic and optical visible wave spectrum. These methods, called functional imaging provide an opportunity to detect early functional harbingers of disease, i.e. to perform early diagnosis of diseases of internal organs, such as dynamics or the level of increase or decrease in temperature of the body. Modern equipment allows the physician to observe on the screen of the personal computer in the form of digital film functioning of these basic life-support systems in natural variability (dynamics), and statics in the form of a color picture. Functional mapping of the body according to his own signals is absolutely environmentally friendly, safe, no impact on the body, which opens up great prospects in our environmentally stressful time. Developed hardware and software make it possible to observe the image of your areas of the body in its own light in different wavelength ranges, build on them functional maps characterizing the functional state of the microcirculation and metabolism in biological tissues, including bioelectric activity of the heart, brain, muscles, blood supply, lymphatic system, in different periods of time. In modern medicine is dominated by methods morphological structural diagnostics, the apex of which is a modern MRI scanner that allows to clearly identify the point of dysfunction of the body. However, long before the occurrence of violations in Zamora is wirausaha system must disrupt its functioning. To identify where and to what extent functional changes - the task of creating new instruments and methods for early functional diagnostics. In addition, modern equipment and methods allow an individual to monitor and adjust the course of medical procedures in order to restore sustainable functioning of the organism, i.e. the effective treatment of a patient.

Thus, opening up entirely new possibilities of detecting diseases at an early stage through the creation of specialized banks functional images / precursors of pathology, i.e. a set of statistical data according to certain changes of wave radiation of the body from breaking its functions. We are talking about the new, most natural, effective and safe medical technology. Applications of this new equipment and technology covers virtually all medicine - from prenatal to gerontology.

The ultimate goal of the clinical examination in dentistry is the correct diagnosis, which, in turn, is necessary for choosing the correct method of treatment of the patient. A prerequisite in achieving this goal is the collection of factual material. Used in dentistry are numerous methods: anamnesis (the collection of the Academy of Sciences is mnase) and its relatives (if necessary), inspection, thermodiagnostics, electroodontodiagnostics, x-ray examination, various laboratory (blood count, biochemical, cytological, allergic and other) studies and samples. The dentist usually faced with a huge number of diseases in practice. There are over 100 therapeutic and 150 surgical diseases, of which about 90 different etiology of the tumor. And each of these diseases has its own symptoms, which complicates the work of the doctor, especially those diseases that have not experienced a long period of time. Writing of such systems allows to store the data (knowledge), regardless of the intellectual abilities of the doctor.

Today the need for implementation of such computer software in dentistry there is no doubt. A huge number of specialized literature and statistical data to confirm this. Our choice has focused on the implementation of expert systems using artificial intelligence methods. Based on the product knowledge base will help to hold the dentist the most accurate diagnosis.

The purpose of this research is to study modern algorithms used systems and the proof of choosing the correct method of programming. After the implementation of the NAP is more successful algorithm in a given programming language, the main task is filling the knowledge base the knowledge of experienced dentists. This will enable the hotfix is working algorithms in the submission process on the basis of feedback. The massive use of this system in the dental clinics and clinics will help to minimize the percentage of medical malpractice, as well as give a more accurate picture of the patient's condition for a successful diagnosis. This problem attracted interest after the implementation of the system for diagnosis of dental diseases in one of the private clinics in Tbilisi. This system is only a small part of a possible future project.

Natural functional monitoring on its own dynamic images of the body is indispensable: when resuscitation, rehabilitation clinics in geriatric clinics, during testing of pharmaceuticals, while optimizing the dosage of the pharmaceutical and physiotherapy.

In the course of diagnosis and treatment of almost all diseases are the most significant interest for physicians is the temperature, its distribution and dynamics of changes on the surface of the body. One of the most common devices, allowing to visualize the temperature field of a person is for example, an infrared imager (type AGA, rainbow, TV-03 and others). Such devices allow the register is to be encoded, to observe and analyze on the monitor the distribution of the temperature field on the surface of the skin and based on the own thermal radiation of the human body in the infrared wavelength range.

The following are the main characteristics of several types of cameras.

The composition and main characteristics of the imager irtis-200 are given
Basic setAdditional components
- Thermographic camera irtis-200 are given- Batteries for Autonomous operation
- Personal computerColor or b/W printer
- Software TERMO- Dewar for liquid nitrogen
- AC adapter/battery charger
- Tripod
- Case
The cost of the imager (basic kit without PC) - $18'200.
Main technical data*
ReceiverInSb cooled receiver - W is DCI nitrogen, possible replacement for HgCdTe
Measuring range temperature-20...+200°C; may be increased up to 1300°
Temperature resolution at 30°0,05°
The temperature measurement accuracy+/-1°or +/-1% of range
Spectral range3-5 microns
Field of view20×20°
Spatial resolution2 mrad
The frame size256×256 points
Performance0.5 frame/sec
The power consumption from the battery 6Vnot more than 1.5 W
The operating time on one battery with the positive temperaturenot less than 4 hours
The total content of nitrogennot less than 4 hours (minimum 2 hours)
Operating temperature-10...+40°
The size of the camera200×140×100 mm (198×125×90 mm)
The weight of the camera1.8 kg (1.45 kg)
* in parentheses are the characteristics of the modification of the camera - IRTIS-2000

For more information,

IR camera irtis-200 are given is a mechanical scanner with a single-element IR receiver. Optics camera lens / mirror. Cooled IR detector with liquid nitrogen determines its high sensitivity and allows to stabilize the parameters of the IR camera, regardless of the ambient temperature, providing high accuracy measurement of absolute temperatures.

Connecting the camera irtis-200 are given to any computer is made through the parallel printer port without any additional devices. In this regard, combined with the latest computer technology provides high performance applications irtis-200 are given for a wide range of tasks. Irtis-200 are given can be used for temperature control in stationary or in the laboratory and in the field together with the portable computer of Notebook type. Low power consumption allows to provide at least 5 hours of continuous operation from a compact 6-In battery.

Due to the presence in the composition of termometre irtis-200 are given a computer with the developed software, all the necessary data processing is performed in the scanning of images. The IR camera is connecting to the th level adjustment and sensitivity range, switched remotely from the computer by the user or automatically.

Calibration of the IR camera is using the standard black body.

Infrared thermography has already been applied in the diagnosis of various types of cancer, neurological, vascular and other diseases for over 15 years, and has been accumulated to date, considerable experience in other leading medical institutions. There is considerable experience in research and evaluation radiotomography images. It should be noted that usually used infrared thermography deals at best with a set of static images of a body surface or directly affected, or are heat zones or reflex projection internal pathologically altered organs. But due to the strong attenuation of the wave infrared range in the human body, the results are not always reliable. All the underlying processes can be reflected in the temperature fields of the skin only as a result of the actions of those or other mechanisms of heat transfer. The use of thermal imaging technology for the treatment of diseases is not known.

To study temperature distributions in the depth of the body must use devices, the host's own thermal radiation at longer ox is Oh, for example in the radio.

The principle of the device for registration and visualization of deep thermal fields of the human body, radiotomography is based on the intrinsic thermal (Planck) radiation of a human body in the decimeter wavelength range. The basis of the device is highly sensitive multi-channel receiver radiometer on the input of which is connected a contact antenna applicators. Antenna applicators are of interest to the researcher's area of the body or head of a person. For effective signal receiving antenna must have a good electrodynamic contact (low reflectance) and to be consistent across the impedance (impedance) with the human body. Since the characteristic impedance depends on the dielectric constant of the substance, and the human body has an average dielectric constant 40-60, the size of the antenna is significantly reduced relative to the size of free space. Accordingly improves and resolution. Thus, in particular, for a wavelength in free space of 40 cm wavelength in the human body is 5-7 see If you can get the resolution to 2.5-3.5, see

Multichannel radioterminal is a hardware-software complex, consisting of in accoustical receiver UHF waves (radiometer), kit antenna applicators (number of channels) with fastening devices on the head and body of the personal computer type IBM and software package. The transfer of data from the radiometer to the computer in digital form via a standard RS-232 port. The device has led the quality control of installation of the antenna applicators on the body (the head) of a person. There are temperature sensors in the skin under the antenna and the sensor at room temperature. Instrument calibration is performed by setting all of the antennas in thermostat with saline. Two temperatures are calculated corresponding coefficients to calculate the temperature for each channel. Radiotomography significantly more difficult and expensive imager is not widely used in clinics and requires highly qualified specialists for his service.

The known method and apparatus for examining the internal organs by the RF patent №2071725. The disadvantage is the influence of harmful x-ray radiation.

A known method for the diagnosis of surfaces of biological objects using reflected radiant energy by the RF patent for the invention №2086117, IPC 6 And 61 In 6/00, publ. 10.08.97, the Method implies that the effect on the surface of human access to laser radiation and recording the reflected emission is equipment, contains the computer and the monitor. The disadvantages of this method: it applies only to study the surface of a biological object, for the study of internal organs is not adapted. The device is quite complicated and expensive, since it contains, besides the computer, the laser emitter and the photodetector.

The known method and apparatus for examining the internal organs and human tissue by RF patent for the invention №2069063. The method consists in the reception of the laser radiation passing through the examined body. The device comprises a laser emitter, a photodetector, a television camera and a video section (monitor).

The known method and device for diagnosis in dentistry, described on the website http//www/med-isida/ru prototype.

The method consists in obtaining x-ray images of each tooth individually and shaping it on the monitor screen. The device comprises an x-ray machine. X-ray system includes a device that emits waves, and a recording device, a wave that is connected to the computer with the monitor.

The disadvantage of this method and devices: effects on the human body harmful x-rays and low accuracy of diagnosis, due to monochrome (black and white) image of the irradiated x-ray beam is mi tooth or jaw. Thicker sections are in bright colors in the picture, but the inflammatory process causes a slight change in the density of tissue.

Tasks of invention: the extension method's functionality and effectiveness of diagnosis and exclusion of harmful radiation.

These tasks have been achieved in the way of computer diagnostic imaging in dentistry, including the registration of radiation with a device for recording radiation, the formation of the panoramic image in the memory of the computer and the monitor screen, the fact that register their own thermal radiation, as a device for recording radiation using the imager for each jaw is formed by two thermal imaging, panoramic image, the first imaging panoramic image is obtained by moving the imager along the arc of a circle in the horizontal plane and the second plane located at an angle to the horizon. Thermal imaging panoramic image of the mandible is performed in the horizontal and vertical planes, and the upper jaw in a horizontal plane and in a plane at an angle. Using thermal imaging, panoramic image upper or lower jaw, obtained in two projections, on the monitor screen, the shape of their volume and what the considerations applying.

These objectives are achieved in a device for computer diagnostic imaging in dentistry, which contains a radiation receiver connected to the computer and the monitor, so that the radiation receiver is made in the form of a thermal imaging camera that is installed with the possibility of the district move and change the angle of the plane of movement. The imager is mounted on the guide represents an arc of a circle. The guide is made with the possibility of changing the inclination of the plane of installation of the imager relative to the horizontal position. Guide installed with the possibility of vertical movement.

The temperature field is highly sensitive even to very small (0,1...0,2 mg/min) changes of blood flow velocity. Local changes in blood flow in a certain volume of the body can be identified through the interpretation of the temperature fields measured by the imager and our device.

Conducted patent research and analysis showed that the proposed solution has novelty, inventive step and industrial applicability. Inventive step is ensured by the fact that the new set of essential features that are necessary and sufficient to implement the method, allows to obtain new properties: a significant increase in the efficiency of diagnostics is expanding the functionality of the method.

The invention is illustrated in the drawings: figure 1 and 2, where:

figure 1 shows a schematic diagram of a system for implementing the method using a thermal imager,

figure 2 shows the optical scheme of the imager.

The device is designed for thermal imaging of the upper or lower jaw 1 head 2 people with the aim of diagnosis and contains the imager 3. Televisor 3 is mounted on the rail 4 having the form of a circular arc (Half circle). On the rail 4 has a drive circuit move 5 and the actuator for tilting the plane of installation of the imager 6. Drive vertical movement 7 is made on a vertical rod 8, which is mounted on the platform 9.

The imager 3 is connected to the computer 10, or rather its processor 11 (Pentium). The computer 10 includes a CPU 11, a monitor 12, a keyboard 13 and a pointing device type mouse 14. The imager 3 (figure 2) contains an infrared(IR) lenses 15 and 16, the line of photodetectors 17, double-sided scanning mirror 18, line emitters 19, collimating lens 20 and 21, two mirror element 22 and 23, two of the focusing lens 24, 25 and 26, 27, two pentaprism 28 and 29 of the two eyepiece 30, 31 and 32, 33. The motor 34 with a crank drive of the scanning mirror. Line emitters 19 are made in the form of a 64-element line of light-emitting d is W green glow, the manufacturer OKB "proton", the eagle. The output of the system contains the photodetectors 35 and 36 and an electronic amplifier 37.

Thermal imaging is called a visible image of the object on the basis of its own infrared (heat) radiation. Infrared rays are invisible to humans. For their perception of the need for special devices - cameras. The principle of all cameras is somewhat similar to the night vision device. Radiation through the lens is projected on the photodetector, which has a selective sensitivity to a specific wavelength of the infrared spectrum. The received radiation causes a change in the electrical properties of a sensor and amplified by an electronic amplifier. The signal is subjected to processing (digitization) and transmits the information about the temperature of the identifiable object and each of its parts with accuracy higher than 0.1°C. Transmitted signal to determine on the screen of the monitor circuits of the biological object and the temperature of its surface, with each temperature value corresponds to its color on the monitor screen.

When working IR lens, consisting of two components 15 and 16, each of which contains a positive lens, focuses the image on the line of photodetectors 17 through a one-way mirror 18, a scanning thermal picture of the corner to what baniani the rotation of the motor 34 with a crank drive. The radiation from the line of emitters 19 collyriums lens consisting of a negative lens 20 and the positive lens 21 through the other side of the mirror 18, while maintaining the equality of scale the image vertically and horizontally. Parallel beam after the lens 20, 21 is reflected from the mirror elements 22 and 23 and is split up in different directions to the lenses 24, 25, 26, 27, focuses them, turns in a horizontal plane by pentaprism 28 and 29 and is seen through okulary 30, 31 and 32, 33, two eyes, and the ratio of the exit pupil of the lens 20, 21 and the exit pupil of the lens must match the Do≥DI.

When using the computer radiation enters the photodetectors 35 and 36, and the electric signal is transmitted to a photomultiplier amplifier 37 and then to the port of the computer 10. The computer 10 processes the signal and generates a first memory of the computer 10, more precisely in the memory of the system unit 11, then on the screen of the monitor 12 (Fig 3) multi-color thermal image of the examined object, i.e. the jaw 1. If the sensors measured temperature, and it is different for each of them at least 0.1°, then the image will be multicolored.

Further, the drive circuit move 5 moves the imager 3 nepalaya 4 on the angle calculated so that the generated frames at least partially p. who was lacrymalis to create a panoramic image. After the obtained panoramic thermal image, for example, the upper jaw 1, the actuator changes the plane of the angle of the imager 6 turn guide 4 up, for example at an angle of 45°and repeat the shot. They do the same thing for the lower jaw 1. When this drive vertical movement 7 lower guide 4 on 4...5 cm below. Drive vertical movement 7 adjust the position of the imager 3, depending on the growth of the patient.

Received four thermal imaging panoramic image can be analyzed on the screen of the monitor 12 or printed on the printer (figure 1 and 2, the printer is not shown). All information in digital form is stored in the memory of computer 10, and, if necessary, using two panoramic image obtained at different angles, known means can be formed three-dimensional image. Important for diagnosis has a color. For example, if a tumor, which is accompanied by an increase in temperature, the color of the surrounding tissues on the imager will be red, the cyst will be black or blue.

EXAMPLES of implementation of the METHOD

Example 1

Patient, 47 years of age, were studied on thermal imager with the aim of establishing a diagnosis of the second right tooth of the lower jaw. In the area of the second right tooth on thermal imaging picture detection is but a stain of red on blue-green background, typical for the rest of the shot. The diagnosis of the disease.

The application of the invention allowed:

1. To extend the functionality of the method by obtaining a full panoramic image of each jaw and surrounding tissues in two projections.

2. To obtain multicolor volumetric thermal image of the jaw.

3. To improve the accuracy of diagnosis in dentistry by determining the local temperature with an accuracy of up to 0.05...0.1 s°.

4. Use standard mass-produced by industry of all countries of the world equipment: the camera of any brand and a personal computer Pentium any configuration.

1. The method of computer-imaging diagnostics in dentistry, which consists in the registration of the radiation coming from the test object using a device that registers radiation from the test object and hold it in a panoramic image in the memory of the computer and the monitor, wherein when registering thermal radiation of the object form for each jaw, two panoramic thermal image by moving the imager along the arc of a circle in a horizontal plane and forming a second image by moving the imager at an angle to the horizon.

2. The method according to claim 1, characterized in that the panoramic television who's image do for lower jaw in horizontal and vertical planes, and the upper jaw in a horizontal plane and in a plane at an angle to it.

3. The method according to claim 2, characterized in that the analysis of the obtained panoramic thermal image upper or lower jaw are used to form on the computer monitor a thermal image.

4. Device for computer diagnostic imaging in dentistry, which contains a radiation receiver, made in the form of a thermal imager, which is connected to the computer with the monitor, wherein the imager is mounted on the guide with the ability of the district to navigate it.

5. The device according to claim 4, characterized in that the guide represents an arc of a circle.

6. The device according to claim 4 or 5, characterized in that the guide made can be rotated up and down relative to the horizontal position.


Same patents:

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SUBSTANCE: method involves applying variable force to a tooth. Harmonic mechanical oscillations of frequency not exceeding 250 Hz are excited. Mechanical impedance Z is concurrently measured. Lower limit of changes shows extreme tooth looseness degree. The upper limit of changes shows physiologic tooth looseness degree. Mechanical impedance Z value is measured as Nxs/m, where N is the newton, s is the second and m is the meter.

EFFECT: high accuracy and objectiveness of measurements.

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FIELD: medicine.

SUBSTANCE: method involves measuring and recording articulation and incisor paths sagittal shift and transverse movements. Mandibular movements are recorded by means of special-purpose device. The articulation, incisor and sagittal paths are determined by means of the first gnathotransducer recording maximum right and left shifts of the mandible. The first gnathotransducer operating, the second one is idle. The gnathotransducers transform spatial displacements of the mandible into electric signals, register and save them. Device has T-shaped metal plates having upper parts rigidly connected to head phones and the lower parts to occipital and subocular arch, two rheostat gnathotransducer fixed on subocular arch in perpendicular to each other and connected to recording device and power supply source via switch, rigid sling having threaded bushing, probe and lock-nut connected to the T-shaped metal plates by means of rubber tie-rods.

EFFECT: high operation accuracy; improved dental prosthesis quality.

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FIELD: medicine; dentistry.

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EFFECT: improved precision of measurement.

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EFFECT: enhanced precision and enhanced efficiency of treatment.

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FIELD: stomatology.

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EFFECT: improved precision; higher truth of estimation of color.

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FIELD: method and device can be used for determining optical characteristics of multilayer objects (layers of enamel and dentine) containing internal matter which is partially transparent and dissipates light diffusely.

SUBSTANCE: radiation is applied to surface of tested object and subsequently registered at output of receiving light guide. Area of partial darkening is formed onto surface of object at the receiving light guide's exit window. Area of darkening provides distribution of dissipated radiation power density, which changes within space. Dissipated radiation enters input window of light guide and is registered. Optical characteristics of multilayer object are judged from the dissipated radiation. Device for realization of the method has illuminating unit provided with exit window, radiation registration unit, at least two photosensitive elements, signal control and processing unit, and receiving light guide. Illuminating unit's exit window and receiving light guide are mounted coaxial to each other. Photosensitive elements of radiation registration unit are optically matched with exit window of receiving light guide and are disposed coaxial to each other for registration of volumetric distribution of radiation power dissipated by tested object.

EFFECT: improved precision.

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EFFECT: high accuracy of measurements; accelerated examination process.

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EFFECT: high fixation reliability.

2 dwg

FIELD: medicine.

SUBSTANCE: method involves recording graphic readings. Patient does sagittal and then transverse mandible movements simultaneously recorded with two parallel graphic lines. Maximum sagittal and then transverse mandible movements are recorded from central occlusion position distinguished in that the patient keeps sliding contact between maxillary and mandibular teeth, or maximum movements are recorded in temporomandibular articulation with dentition rows separated to minimum. Sagittal movement amplitudes being symmetric and transverse mandible movements line being immobile, norm is to be diagnosed. Amplitude asymmetry or transformed parallel dimension being the case, functional occlusion disorder or temporomandibular articulation pathology is to be diagnosed.

EFFECT: high accuracy of diagnosis.

2 dwg

The invention relates to medicine, namely to the dentist, and applies to instruments for studying the condition of the mucous membrane of the jaws

FIELD: medicine.

SUBSTANCE: method involves measuring superficial mammary glands temperature in women in horizontal position by means of contact method in a plurality of points using transducers. The transducers are arranged on common matrix sensor unit and connected to computer for building temperature distribution map on mammary gland surfaces. The map is designed on display unit screen by means of computer program recording temperature readings received from the transducers. Diagnostic parameters are calculated and evaluated. Conclusions are drawn on deviations from norm being detected. The matrix sensor transducers are brought in engagement with the whole both mammary gland surfaces with equal force and at the same time. Temperature values are recorded every 1 s by means of computer program and distributed temperature maps are fixed until heat equilibrium is achieved in contact area. Telemetric intellectual microprocessor transducers are used as the matrix sensor transducers. The transducers are connected to computer via common three-wired bus and arranged on the matrix sensor allowing independent axial displacement.

EFFECT: high accuracy in plotting temperature distribution maps; high performance characteristics; complete examination safety.

4 dwg

FIELD: medicine, neurosurgery.

SUBSTANCE: one should fulfill intra-operational thermo-visional studying of patient's cortex after lancing dura mater. Moreover, on registering initial thermal picture within trepanation opening it is necessary to conduct a cold sampling by steadily irrigating the cortex with physiological solution of room temperature. Then one should register thermal picture of peritumoral area to evaluate temperature values immediately after the sampling and 1 min later. If temperature drop corresponds to 1,8°C and higher it is possible to conclude upon the safety of autoregulation of pial-capillary channel of peritumoral area.

EFFECT: higher significance of evaluation.

2 ex

FIELD: medicine.

SUBSTANCE: one should perform thermo-visional studying in the surface of inferior limb where the ulcer is located. Then one should evaluate temperature drop between ulcerous perifocal area and neighboring intact sections. If temperature drop is not above 1,2°C and remains at this value at repeated trial the wound should be considered to be prepared for operative interference. If is initially above 1,2°C one should continue the course of antiphlogistic therapy under the control of thermo-visional studying till the decrease of temperature drop to achieve 1,2°C and lower.

EFFECT: higher accuracy of detection.

1 ex

FIELD: medicine.

SUBSTANCE: clinical diagnostics unit intend for diagnostic procedure of different organs of biological object, in particular, organs of human body for estimating condition of patient's health, absence of presence of malignant or non-malignant new growths at any stage of growing, as well as for observation and stating dynamics of changes in patient's health or development of mentioned pathologies. Device has to be a device for measuring temperature of biological object which device is made in form of prod. The pored has temperature detector and heating element. Prod is made in form of cylinder with casting. Temperature detector is inserted inside casting to go out of it for 3 mm. Prod is provided with spring made for fixing casting inside cylinder and for providing preset strength at contact of temperature detector with skin of biological object and displacement of the detector at preset distance inside cylinder. Prod is also provided with heat insulator disposed between temperature detector and heating element. Heat insulator is made in form of gas interlayer which has thickness to provide radiation heat transmission from heater to detector and to prevent convection heat transmission from heater to detector.

EFFECT: simplicity of design; low cost.

2 cl, 2 dwg

FIELD: medicine.

SUBSTANCE: method involves recording absolute value of feeding pedicle flap temperature in skin areas in its vicinity before, immediately after and in 30 min ozone therapy session. Temperature increment in the flap immediately after the ozone therapy session being at least 0.5°C higher than the value in the intact area and its further increase being observed in control study 30 min later, ozone therapy is evaluated as efficient one.

EFFECT: high accuracy of study.

FIELD: medicine.

SUBSTANCE: method involves carrying out infrared thermography. Skin temperature rise being observed in the wound vicinity not more than 2.3°C as high when compared to symmetric areas and not more as 1.4°C as high when compared to surrounding tissues when heat production area is not greater than 6.5 cm2/cm of wound length beginning from the second day of postoperative period, noncomplicated clinical wound process course is diagnosed.

EFFECT: high accuracy of diagnosis.

1 tbl

FIELD: medicine.

SUBSTANCE: method involves examining peripheral nerve with infrared imaging after external neurolysis and temperature gradient is calculated between compressed and proximal intact segment of the nerve trunk. The temperature gradient value being found to be greater than 1°C, significantly reduced blood supply level, availability of local cicatricial changes in nerve trunk structure, no adequacy in external neurolysis is stated to be the case being indication to epineurotomy and internal microsurgical neurolysis.

EFFECT: wide range of diagnostic applications in neurosurgery.

FIELD: veterinary science.

SUBSTANCE: the present innovation deals with treating inflammatory diseases of mammary gland in cows. One should inspect functional state of mammary gland in cows due to measuring thermal flow in the following udder's areas: in the body of left anterior teat from internal side, in the body of right anterior teat from internal side, in the body of left posterior teat from internal side, in the body of right posterior teat from internal side, at udder's foundation, at its bottom and udder's speculum to calculate its average value and at its value being above 163.26 W sq. m K one should diagnose mastitis.

EFFECT: higher accuracy of diagnostics.

3 dwg, 3 ex, 5 tbl

FIELD: medicine.

SUBSTANCE: method involves recording heat radiation with photosensitive cell and building thermovision image as multicolor thermovision picture on display screen. The image is divided into temperature field matrix cells. Thermovision pictures produced in different sessions are reduced to the same scale and saved in database with session date being attached. The thermovision pictures are displayed on monitor screens frame-by-frame in succession separated by time pauses proportional to time intervals passed between the sessions. A pause being longer than 0.02 s, additional frames are inserted to make frame succession frequency be greater than 50 Hz. Linear interpolation is applied to additional frame color spectrum reflecting results of linear interpolation applied to matrix temperatures corresponding to the colors. The matching temperature field matrix cells temperatures are compared for determining temperature gradient in time and neighboring matrix cells temperatures produced in the same session are compared for determining spatial temperature gradient. The data are used in setting diagnosis.

EFFECT: high diagnosis accuracy.

6 dwg

FIELD: medicine, diagnostics.

SUBSTANCE: the method deals with monitoring the difference in signals obtained from N pickup units, where N ≥ 2, ECG, pulse, temperature and analysis of the range and variability of their rhythms, nonlinear chaotic fluctuations during the period of registration. During analysis one should detect the values for fractal dimensions of Hirst's index and informational Fischer's index standardized, correspondingly, by the average value during either nocturnal or diurnal period. One should conclude upon improved body state by the normalization of signals' difference of peridiurnal rhythm, increased fractal dimensions, Hirst's index, decreased standardized informational Fischer's index, and one should conclude upon worse physiological or pathophysiological processes according to the opposite alterations. The method enables to widen functional possibilities during diagnostics.

EFFECT: higher accuracy of diagnostics.

3 dwg, 6 ex

FIELD: medicine, neurophysiology.

SUBSTANCE: one should perform thermovideo testing for one's feet plantar surfaces at two stages of operation in autonomous innervation area of compressed radicles. The first survey should be carried out at a stage after the first shift of compressed radicle and sac from disk's hernia, the second - at a stage after suturing in an operation wound. At increased temperature in autonomous innervation area after the first shift of compressed radicle and sac from disk's hernia and detection of thermoassymetric difference not exceeding 1.0 C, after suturing in an operation wound one should predict rapid regress of radicular neurological symptomatics in the nearest postoperational period, and at increased asymmetry being 1.0 C higher one should predict either safety or the increase of radicular neurological symptomatics.

EFFECT: higher reliability of prediction.

2 ex