RU6637U1 - APPARATUS FOR PRODUCING COMPUTER X-RAY IMAGES - Google Patents

Abstract

1. An apparatus for obtaining computer x-ray images, including a medical x-ray machine, a luminescent screen, an electronic camera, an optical system for projecting an image from the screen onto an electronic camera matrix, and an electronic computing system for controlling the operation of an x-ray source and an electronic camera, characterized in that its luminescent screen, optical system and electronic camera are structurally combined into one assembly, assembled on a plate installed in the standard guides of the film cassette holder of the X-ray machine, and the plate with the screen and elements of the optical system are covered with a light-protective casing, and the electronic camera and lens are protected from X-ray exposure X-ray opaque screens.2. The apparatus according to claim 1, characterized in that normally closed relay contacts or a normally closed circuit of another, for example, semiconductor, switch controlled by an electronic computer system are connected in series to the operator control circuit of the x-ray source. The apparatus according to claim 1 and/or 2, characterized in that in the optical system for projecting an image from the screen onto the matrix, a lens with a variable focal length is used, made according to the main optical parameters for the two extreme values of the focal length, as well as achromatization and enlightenment in accordance with with the spectral characteristic of the luminescent screen.

Description

ASHDRAT FOR NODOUSH KOVSHKSHShShH RShTGShOSHKI

IMAGES

The proposal relates to the field of x-ray radiography and concerns the X-ray ashshrat

The standard process of obtaining X-ray diffraction patterns is usually associated with the use of a special film. The disadvantages of this process are well-known: firstly, the inability to quickly obtain X-ray images (only the time from an X-ray exposure to obtaining a wet X-ray image will take about 10 minutes); secondly, the need for maintenance during X-ray development; thirdly, the consumption of chemicals and silver-containing film.

Known apparatuses for filmless reproduction 1, for example, to obtain during the X-ray exposure an electrically funded relief on a selenium plate followed by the reading of this relief Reading out can be done as it does in photocopiers like Xerox “It is also possible to read with a scanning probe / X /. The received signal is used for storing and forming an electronic X-ray image on a video monitor or ES display. Disadvantages: significant complication of the electromechanical equipment of the X-ray apparatus; significant deterioration in the quality of the obtained x-ray. At the same time

from X-ray exposure to obtained: W aseOpaise asia reduced slightly,

iSBeciubi devices on the use of electronic transformer converters (RCSH, soya / with a camera / ii /, Such an apparatus allows you to see the X-ray image on the screen of the Video Monitor and store it electronically in (form W “deactivate or (after appropriate conversion) to ;, orme - file of the image on the computer.The apparatus allows you to quickly heal the radiograph and even a series of radiographs during radiopaque diagnostics, The disadvantage is the limited resolution allowing the ability to Tbj significantly saupayschaya resolution of film rentgenogrash,

naKoaeUi lime device for dll sex / Czech kompyuter reat-yenovskih image, including the Shdidan re111tenovskiy device and well-known designs, l: .heresheshdbntny screen, electro camera, optical about Systeglu for projecting the image from the screen to the matrix of the electronic camera and electronic computing In order to control the operation of the x-ray source and the electron of the camera NO / 3 /, this device, adopted as a prototype, is devoid of the drawbacks of the above-described steps, however, being CilopMHannels in the form of an independent solution tgenovskoy sisteguyay, he can claim only to replace the entire fleet of X-ray equipment in Sh1ogoch1yuleinsh; Mediation is required to be:; cost and time, ji then /.ie I’ve gotten better x414yCy X-ray deficiency CKOtfi silvercoder L4e 1 photoplastic extremely limits the head.: X-ray research, in particular, in practice

shssovnh inspections for the prevention of pulmonary disease and in

traumatology.

X-ray apparatuses without changing their design and method of operator’s identification by them by equipping the standard inventory of the radiologist’s workplace with means of a filmless computer X-ray radiograph while maintaining the possibility of using a conventional photographic film radiograph}. At the same time, the operator of the x-ray unit retains responsible control over the operation of the x-ray source and the patient’s permissible dose, while ensuring, at the same time, the necessary degree of controllability of the device from the electronic computer system, sufficient for accurate and sync: background operation of the system parts, but which does not reduce the degree of x-ray safety for the patient and attendants. In terms of expanding the functionality of the apparatus, the goal is also to increase the resolution and improve energy characteristics in the optical system for designing an image from a luminescent screen to the matrix of an electronic camera.

This goal is achieved by the fact that in the apparatus for obtaining computer x-ray images, including a medical x-ray apparatus, a luminescent screen, an electronic camera, an optical system for projecting an image from a screen onto a camera matrix and an electronic computing system, a luminescent screen, an optical system and an electronic camera combined into a single assembly assembled on a tablet installed in the standard guides of the X-ray film cassette holder. In this case, the tablet with the screen and the elements of the optical system are closed by a light-protective casing, and the electronic camera and lens are protected from the effects of x-ray radiation by x-ray opaque screens. Normally closed relay contacts are sequentially included in the operator control circuit of the x-ray source

shh Yaorshlyao zhlchal hal desh shhhh-oh, aadrishr, flow switch, control from the electronic-computing system to the corresponding program 5me, J3 to the same system of the device applied o0equiv with a variable focal length calculated but made up to the main optical parameters for two extreme values -Also additionally, axpoii-i Tii3aiaiH and enlightenment in accordance with the spectral characteristic emitted a lucid screen.

On FIGL, a proven scheme has been proved for the third-party application for video channels) -1vrnA reyatgeyaooyh images, on FIG.; | 2 - a circuit of signal paths

The consumptive one; shzg ОХо .рс, 1-а д; 1л (бві “1 () INCLUDES a standard-standard Reagan apparatus, which is cautioned on the drawing by the source of X-ray radiation I, ciOjiOM; And the device is equipped with an X-ray device MS1OCHx11aK0115 X-ray

iipii n C1roiks x-ray and reghik ioluchil gil kolashoter yiso6p.ienjd: -; To aye ..; the ID is connected by "1 / bushes; 4 5, electric trip K &: viepy b, optical system for designing a 1-screen glitter screen 5 lens: a: lehr, cDQiaau from ericade and lens o, electro: sho calculator By controlling the X-ray radiation source, the electronic-calculating system b is connected to the control device 4 i. In accordance with the purpose of the proposal, the luminescent screen b, optical (mirror 7 and object о) and an electric camera about the end of the unit are combined into one unit, conditionally outlined contour from the point; pin II, si then the unit is assembled on a tablet 12, intended for installation in the cradle; shu4ib 3 fotoplosochny cassette and radio, Planet 1 l connected to the luminescent case ij, which combines the transfer v: with the flashing elements of the device in one unit, Iry electronic camera 6 and body; lens length 8 s {11 from direct and scattered re-radiation radiation of X-rays non-impinging 14 screens, For C; 1 synchronization 1 operation of the electronic camera and the source “X-ray emitter” 1 in the operator control of the source from the source, normally closed relay contacts are indicated, indicated by the I & position and included in the / synchronization device controlled by the electronic computing system, the latter is equipped with a computer program that ensures the implementation of the inventive method for producing computer x-ray images, as well as their viewing tr, processing, storage and printing, As for the device of the optical system for designing the image from the screen onto the matrix of the electronic camera, as a result of the corresponding experiments, the authors came to the conclusion that the use of a fast lens with a variable focal length in the proposed apparatus was used. In the system, the lens is calculated for two extreme values of the focal length along the main optical parameters - aperture, resolution, distortion, and the transmission of the field, and further configured for raschotao achromia tyzatsai and enlightened in accordance with the spectral characteristic Coy radiation luminescent screen Installation short (| / Oecussi "by the matrix camera elektronnoii projected image from the entire area of the luminescent screen. At the same time, the achievable resolution in the x-ray image displayed on the display is determined by the characteristics of the electronic camera Л1 When using, for example, a 600x600 element matrix, the resolution in Her count on the screen plane will be the largest line on the I line, the subjectively perceived image quality is satisfactory for most of the overview radiographs of large objects.

When setting a long focus on the matrix of the electronic camera ars. A part of the surface of the human-screen is taken from the central area, and the radiologist receives an image of the targeted x-ray beam on the computer display. So, for example, with a threefold ratio of the magnitude of the short and long foci, the linear dimensions of the image displayed on the di (more than a portion of the luminescent screen are reduced by three times, the resolution in terms of the plane of the screen is approximate; 3 "b is 1 mm, and the subjectively perceived image quality is not he is tired, and in a similar way he surpasses the quality of the image, & irradiated on film.

For a lens designed and designed for nepecTpoiiKa by | it is ok; for a distance of only two extreme positions, significantly higher requirements are feasible compared to the requirements that are fulfilled for lenses, reconfiguring harmoniously over the entire range. In this case, high indices are achieved in all essential parameters: distortion, uniform light transmission across the field, achromatization, subject to the requirement of high aperture ratio for both values of the focal length of the lens. This will make it possible to obtain the image quality that is best for the matrix used in the electronic camera for two modes of radiography: to obtain an overview ali of a targeted x-ray image. Achromatizadium and optical illumination, calculated in accordance with the spectral characteristic of the screen glow, additionally provide an improvement in the energy characteristics of the light transmission from the screen to the electronic camera matrix; the use of a lens with such characteristics makes it possible to know the radiation doses of the patient during X-ray studies.

The claimed ashshrat functions as follows

First, turn on the x-ray apparatus of 1 pc camera (on

figure is not proved), komdzter, i.e. electronic computing system Tew J, Ideogytor 10, with Heodxo uiMocTH - a printer, then yIlp is launched, Iaсyii) nporpa№4y.a iviecTiiB in the shooting position on the table L, they are focused on X-ray radiation and I (X-ray). On the remote control of the X-ray machine, the parameters of the X-ray exposure are set, including voltage and power and the strength of the renatron tube, as well as the exposure value of the Svettsenka).

It should be noted that when the electronic computing system is flashed, then the relay 15 is always, except for the time intervals determined by the program, 1 under current, and its contacts included in the operator control circuit are disconnected. As a result, to get the source of the X-ray radiation, the operator’s screwdrivers are not enough, but it is also necessary to enable the relay by shutting it off, which is done by the program command after pressing Tiiii on the button X-ray exposure. Usually, when working at lp OIi lnochina: roentgenography, this button is made in the form of a control element, kayelno connected with the remote control of the x-ray apparatus, which sets and monitors the parameters of the x-ray exposure.

When a button is pressed, due to the design of its drive mechanism, the operator sequentially senses the state of the intermediate and final stops; In the same sequence, the trusted control circuits of the X-ray apparatus are closed with the button: a) a circuit, upon closing of which the X-ray generator is not shown in the figure) READY to practice the X-ray exposure; b) a circuit, upon closing of which, if by this time all the processes of preparing the x-ray generator had been completed, the x-ray emitter is immediately turned on and the x-ray exposure is processed with the parameters installed on the remote control.

The operator, if necessary, delay the device in the preparation states and B, at the right time, immediately turn on the exposure. At the same time, when the button is pressed, it immediately goes to the end stop in the X-ray machine, which operates in the (hot-eyed X-ray printing system).

In all cases, the duration of the x-ray exposure cannot be greater than the value of the hold parameter set on the remote control, regardless of how long the button was held pressed, but should be shortened by releasing the button if, by the time the button was started, the exposure of the device was not completed,

As for the claimed apparatus, then the normal closed contacts of the relay 1b are included in the circuit allowing the development of the X-ray exposure "and the electronic computing system is equipped with a program for controlling the operation of the electronic cooler and a circuit for supplying current to the relay casing 15, and a signal for the operation of the camera and the x-ray source achieved as follows.

When working on an electronic-computing system in which a control program is running, the operator is required to press the same button, but always to the end. In this case, the control action of the relay program 1o is constantly, with the exception of the moments described above, under current, and its contacts are in the open state. Thus, the X-ray exposure is prohibited by the program influence on the relay. At the moment when, by the way, the rabosh with the patient, for example, after giving oral koshda, does not breathe, it is necessary to conduct an x-ray eco-position, the operator starts the electronic camera on exposure by pressing the button on the ES keyboard or the button mish1. In this case, first the electronic camera 6 is turned on in advance of the set exposure time, and upon issuing program reports on turning on the camera to the exposure program, the relay 15 is de-energized for the time until the end of the camera's exposure time. The relay contacts are closed, and thus the X-ray exposure installed on the remote control is synchronized, synchronized with the operation of the RY camera,

This connection of the electronic system to the control of the x-ray emitter leaves the x-ray generator and the source under full control the operator's control, which eliminates any possible excess for the patient of radiation doses due to system failure,

Relays described above: 15 can be performed by another, for example, under-wire controlled switch

AB101u1a1acheS1Sh and immediately after completion of the exposition the program displays the image on the display and the video monitor. The Reagentologist has a quick opportunity to study regensensgr €: / 5y, and to display the image you will see the display / | EV1, he wants to make a set of opera- tional processing ii3o6pa.;: EiUiJi, which is connected to the opera-olon iiporpsivni e, and for matching it he sends the original image on the screen of the video monitor, which is output from the video memory of the electronic camera.

It follows from Otrvie-iaxb that before the radiologist begins to send the emails from iZobra; cache1e; sz including its removal from the screen), the program will require him to send J: It; Hiil protocol attributes that accompany it, he filled in the database,

sBOJEUieT use an x-ray machine in regular photo mode

Thus, the plug-in apparatus allows:

- floor ;; scan the x-ray image on vyedomonitra and on the computer display poorly after the x-ray exposure;

 store x-ray images on floppy disks or in ES memory in specialized data;

 print x-ray images on a regular b gmvge.

 X-ray image is a monochrome raster image with a width of 752 and a height of 5S2 pixels, with gradations of brightness.

The obtained images are stored on a computer along with descriptive attributes (date “name year of birth, vieditsinskie data, shooting parameters, etc.).

The use of the proposed apparatus for acquiring kuuter X-ray images in medical institutions of the country will make it possible to reduce the cost of the radiography process by reducing the consumption of special film and chemicals, increase the efficiency and effectiveness of Shditsyn's examinations and diagnostics, and reduce the irradiation of patients and general staff.

TURNED CONFIDENCE

.. S. Volynets

Claims (3)

1. The apparatus for obtaining computer x-ray images, including a medical x-ray apparatus, a luminescent screen, an electronic camera, an optical system for designing a screen image on an electronic camera matrix and an electronic computer system for controlling the operation of the x-ray source and electronic camera, characterized in that its luminescent screen, optical system and electronic camera are structurally combined into one assembly assembled on a tablet installed in standard guides fotoplenochnogo the cassette X-ray machine, the tablet with a screen and the optical elements of the system are closed sunscreen jacket, and the electronic camera and the lens is protected from exposure to X-rays rentgenoneprozrachnymi screens.  2. The apparatus according to claim 1, characterized in that normally closed relay contacts or a normally closed circuit of another, for example, semiconductor, circuit breaker controlled from an electronic computer system are sequentially included in the operator control circuit of the x-ray source. 3. The apparatus according to claim 1 and / or 2, characterized in that in the optical system for projecting images from the screen to the matrix, a lens with a variable focal length is used, made according to the main optical parameters for the two extreme values of the focal length, as well as achromatization and enlightenment in accordance with the spectral characteristic of the luminescent screen.