KR101404004B1 - Apparatus for Display of X-ray Photograping Area of Potable type - Google Patents

Abstract

[0001] The present invention relates to a portable X-ray photographing area display device, in which an X-ray irradiated area on a liquid crystal display part attached to a portable X-ray photographing device is divided into an image and a photographing range obtained through a CCD camera, The amount of exposure of the patient according to the set voltage and current and the irradiation time value is calculated and displayed in real time, so that the irradiation range can be precisely checked and photographed.
An object of the present invention is to provide an X-ray tube which is irradiated through an X-ray oscillation section composed of an X-ray tube for emitting X-ray, an X-ray tube for controlling a high pressure generating part for applying a high voltage to the X- A portable X-ray imaging area display device for displaying an X-ray irradiation area on a screen, comprising: an object image acquiring part for acquiring a surface image of an X-ray irradiation range taken by an X-ray oscillating part; A liquid crystal display unit displaying a subject image obtained through a subject image acquiring unit, an X-ray photographing range, a distance from the subject, an X-ray absorbed dose, and a photographed X-ray image in real time; A distance measuring unit for measuring a distance from the X-ray tube to the X-ray irradiating position; And an image of the X-ray irradiation limit range is displayed on the image obtained from the CCD camera module through the liquid crystal display unit. The X-ray skin absorption dose of the subject is calculated according to the X-ray irradiation condition and displayed on the liquid crystal display And a main control unit for controlling the main control unit.

Description

[0001] The present invention relates to a portable X-ray photographing area display device,

The present invention relates to a portable X-ray imaging apparatus, and more particularly, to a portable X-ray imaging apparatus capable of displaying an X-ray irradiation position and an area for an X-ray imaging of a subject, The present invention relates to a portable X-ray imaging area display device capable of various applications such as oral, orthopedic, and industrial applications, as it enables not only confirmation and storage of X-ray images at the same time as photographing, but also transmission of wired or wireless data.

Generally, an oral-type imaging apparatus having an X-ray imaging means is used in a medical institution such as a public health center or a hospital, and irradiates the subject with radiation such as X-rays, detects the radiation transmitted through the subject, So that it can be confirmed.

Since the oral imaging apparatus having such a general X-ray imaging means is expensive, is very large in size, and is heavy in weight and is difficult to move, it is fixedly installed in a medical institution, and a subject who wants to shoot should visit the medical institution directly.

For X-ray imaging, X-ray imaging was performed using a special radiation sensitive film, developed in a separate space, and examined using the developed film.

However, the above-mentioned method can not immediately confirm the result of the examination after the photographing, and it takes a long time to confirm the photographing result since a special photosensitive film and a film developing machine provided in a separate space have to be used. There is a problem such as an increase in the maintenance cost for the continuous consumption of the developer and a safe treatment for the developer.

In order to solve such a problem, conventionally, it is small, light, easy to use, and it is possible to separately use only the functions to be photographed, thereby further improving the portability and usability of the oral- So that the examinee can confirm the taken oral image immediately after shooting.

Such prior art is disclosed in Korean Patent Registration No. 10-0941125 filed and filed by the present applicant.

FIG. 1 is a block diagram of a portable oral image taking apparatus according to the related art. The portable oral mouth photographing apparatus includes an X-ray irradiating unit 10, a CCD sensor unit 20, Unit 30, a main examination unit 40 and an oral camera unit 500. In addition, in order to prevent radiation exposure to a user who performs X-ray imaging using a portable oral image pickup apparatus, Acrylic (equivalent to 0.5 mm Pb) 15 may be attached.

The X-ray irradiating unit 10 includes an X-ray tube 11, a high-voltage generating unit 12, a first connecting terminal unit 13, and a first control unit 14, A second interface unit 46, a fixing unit 44, an operation input unit 47, a battery 41 for power supply, . The second connection terminal portion 43 and the first connection terminal portion 13 are mechanically coupled to the main inspection unit 40 and the X-ray irradiation unit 10 by mechanical coupling means 13 ' .

According to the portable oral image taking apparatus according to the related art constructed as described above, when the inside of the mouth is to be photographed by using only the oral camera unit, the X-ray irradiating unit can be separated and the portability and ease of use of the oral- It is possible to further improve the storage stability of the apparatus.

Also, since each unit can be individually separated, the repair of each unit is easy, and the convenience of upgrading software and hardware for each unit is also improved. Further, when the X-ray irradiating unit is separated from the portable oral cavity photographing apparatus, electromagnetic interference to the main examining unit by the X-ray irradiating unit can be minimized, and power leaked by the X-ray irradiating unit can be prevented .

In addition, since the display unit is rotatable and / or detachable, the X-ray image of the subject and the visible light / infrared image inside the oral cavity can be displayed on the display unit by rotating the display unit as well as the operator operating the portable oral- So that the examinee can understand his / her oral condition and the diagnosis of the doctor can be made more reliable.

However, since the portable oral image taking apparatus according to the related art is configured in a cone shape, there is a problem that the photographing should be performed in a state in which the accurate photographing position, range and distance are not known at the time of oral photographing. Collimator, which is a light emitted from a halogen lamp or the like, determines the irradiation range of X-rays and confirms the irradiated region, which has a problem in that it can not be used for oral use.

Therefore, in order to solve the problems of the related art described above, it is an object of the present invention to accurately display an X-ray irradiated region on a liquid crystal display unit attached to a portable excitation apparatus, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a portable X-

It is another object of the present invention to provide a distance measuring apparatus and a distance measuring method for measuring a distance of an x-ray tube spot point to a subject by attaching a distance sensor to a photographing apparatus and displaying the measured distance on a liquid crystal display unit, And the amount of exposure is calculated and displayed on the liquid crystal display unit.

According to an aspect of the present invention, there is provided an imaging region display apparatus for a portable x-ray, comprising: an X-ray tube for emitting X-rays; a high-voltage generating unit for applying a high voltage to the X-ray tube; ray irradiation area through the X-ray oscillation section, the imaging area display device comprising: an X-ray oscillating section for displaying an X-ray irradiated area irradiated through the X- An object image acquiring unit acquiring an image; A liquid crystal display unit displaying a subject image obtained through the subject image obtaining unit, an X-ray photographing range, a distance to the subject, an X-ray absorbed dose, and a photographed X-ray image in real time; A distance measuring unit for measuring a distance from the X-ray tube to the X-ray irradiating position; And an image display unit for displaying an X-ray irradiation limit range of an image obtained from the CCD camera module through the liquid crystal display unit, calculating an X-ray skin absorption dose of the subject according to the X-ray irradiation condition, And a main control unit for displaying on the display unit.

Here, the main control unit may further include a database for storing and providing absorbed dose table data according to an X-ray irradiation condition.

The object image acquiring unit includes a reflector for reflecting visible light incident through the X-ray irradiator; And a CCD camera module or a CMOS sensor for acquiring an image of a subject from visible light incident through the reflecting mirror.

The distance measuring unit preferably comprises an infrared ray distance sensor.

The imaging area display device of the portable X-ray according to the present invention includes a camera module installed on the front surface of the X-ray oscillation unit to acquire an irradiated site image in real time and display the image on the liquid crystal display unit, So that the user can easily identify the survey range.

In addition, a distance measuring sensor is added to convert the distance from the subject to the X-ray tube spot point of the equipment and displayed on the liquid crystal display unit. The X-ray exposure amount of the subject according to the distance, set voltage and current, Therefore, the user can check the amount of exposure and adjust the set value so as to control the amount of exposure, so that excessive exposure can be prevented, and X-ray can be taken more safely.

1 is a configuration diagram of a portable oral cavity photographing apparatus according to the related art,
FIG. 2 is a block diagram of a photographing area display device of a portable X-ray according to an embodiment of the present invention,
3 is a structural diagram of an image acquisition apparatus for displaying an imaging region of a portable x-ray according to an embodiment of the present invention,
4 is a diagram showing a temporal example of an absorbed dose table according to an embodiment of the present invention,
5 is a table showing an embodiment of the back scattering coefficient,
FIG. 6 is a screen display showing the photographing area of the liquid crystal display part in FIG.

The configuration and operation of the imaging area display device of the portable x-ray according to the embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 2 is a block diagram of a photographing area display device of a portable X-ray according to an embodiment of the present invention. The X-ray tube 123 emits an X-ray, An X-ray oscillating unit 120 including a high-voltage generating unit 122 for controlling the high-voltage generating unit 122 and an X-ray controlling unit 121 for controlling the high-voltage generating unit 122; And an image processing device 110 for displaying an irradiation area of the X-ray on the screen, calculating the irradiation distance and the amount of exposure, and displaying the calculated distance on the screen.

The image processing apparatus 110 includes an infrared ray distance sensor 101 for measuring a distance from the X-ray tube to the X-ray irradiating position, and a controller 120 for converting the voltage signal obtained from the infrared ray distance sensor 101 into a digital value A CCD camera module 112 for acquiring a surface image of an X-ray irradiation range taken by the X-ray oscillation unit 120; A liquid crystal display unit 115 for calculating and displaying in real time the subject image obtained through the X-ray imaging unit 112, the X-ray photographing range, the distance between the subject and the X-ray absorbed dose and the photographed X-ray image, An image indicating the X-ray irradiation limit range is output from the image obtained by the module 112 through the liquid crystal display unit 115 and the X-ray skin absorption dose of the subject is calculated according to the X-ray irradiation condition A main control unit 113 for displaying on the liquid crystal display unit 115 an X-ray room It consists of the absorbed dose in the table (table Absorbed Dose) data according to the conditions in the storage and database (DB) (114) provided.

Here, the liquid crystal display unit 115 displays all the user's selections, operating states, and all functions operating in the main control unit 113, in the form of a touch capable of user input.

FIG. 3 is a structural view of a photographing area display device of a portable X-ray according to an embodiment of the present invention, in which the leakage of X-rays generated in the X-ray tube 123 by the supply voltage of the high- Ray tube 123 is provided in front of the X-ray tube 123, and an irradiation-field limiting mechanism 102 provided with an X-ray irradiator 103 for irradiating the subject with X- A reflector 104 and a CCD camera module 112 are provided in the mechanism 102 and the CCD camera module 112 (see FIG. 1) is provided through a reflector 104 that reflects visible light incident through the X- To obtain an object image.

The distance from the CCD camera module or CMOS sensor to the center of the reflector 104 and the distance from the center of the reflector 104 to the spot of the X-ray tube are the same, And the irradiation range of the X-ray coincide with each other.

The operation of the imaging area display apparatus of the portable X-ray according to the embodiment of the present invention will be described in detail with reference to FIGS. 2 to 6. FIG.

First, according to the present invention, the surface of the irradiation range to be irradiated through the irradiation-day limiting mechanism that limits the irradiation range so that the X-ray generated in the X-ray tube is irradiated only to the subject is acquired through the CCD camera module, The image is displayed on the liquid crystal display unit, and the X-ray irradiation distance and the amount of exposure are calculated and displayed. Thus, the user can visually check the X-ray before taking the X-ray.

FIG. 1 is a configuration diagram of a photographing area display device of a portable X-ray according to an embodiment of the present invention. The infrared ray distance sensor 101 is attached to the front surface of the irradiation field limiting mechanism 102, The voltage value generated by the infrared distance sensor 101 is converted into a digital value through the A / D conversion unit 111 and input to the main control unit 113 .

The main controller 113 acquires the real time image of the subject from the infrared distance sensor 101 and the CCD camera module 112 and acquires the real time image of the subject, The X-ray irradiation distance to the real-time object image and the subject is calculated and displayed through the liquid crystal display unit 115. [

The X-ray controller 121 performs bi-directional serial communication with the main controller 113. The main controller 113 transmits X-ray irradiation condition information selectively controlled by the user to the X-ray controller 121, So that the X-ray value set by the user is examined.

The main control unit 113 recognizes and processes the user touch information inputted from the liquid crystal display unit 115 to display selection information or controls the X-ray oscillation unit 121 to generate X-rays.

The absorbed dose of the subject is calculated based on the absorbed dose table stored in the database 114 based on the distance information inputted from the infrared distance sensor 101 through the AD converter 111 . That is, when the subject is a person, the skin-absorbed dose is calculated and displayed on the liquid crystal display unit 115.

FIG. 4 is a view showing a temporal example of the absorbed dose table according to the embodiment of the present invention. The absorbed dose table is previously measured in the irradiation port 103 immediately before the irradiation field limiting mechanism 102 according to the X- Is stored in the database 114, and the main controller 113 calculates the absorbed dose corresponding to the X-ray irradiation condition.

That is, the actual absorption dose calculation to be applied to the subject spaced a certain distance from the irradiation port 103 of the irradiation field limiting mechanism 102 is calculated by the following equation.

Equation (1) below is an absorption effective dose calculation formula of the subject (skin). When the subject is skin, the skin tissue absorbed dose conversion coefficient is '35.7'.

Here, the back scattering coefficient number is shown in the table shown in Fig.

The dose according to the distance is calculated by the following equation (2).

Here, 'L' is the distance from the focal point of the tube to the object, and '1' is the distance from the focal point of the tube to the irradiation port 103 of the X-ray irradiation field limiting mechanism 102.

The dose to be measured is calculated by the following equation (3).

'X' is provided by storing the absorbed dose in the database 114 as a table immediately before the irradiation aperture 103 of the predetermined irradiation field limiting mechanism 102 according to the irradiation condition, as shown in FIG.

The absorbed dose table is an X-ray measured dose under irradiation conditions of 0.05 s per generated voltage and current (kV, mA).

FIG. 4 shows that the X-ray irradiation conditions are 2 mA and 80 kV, and the absorbed dose when the irradiation time is 0.05 s is 'X'.

That is, 1 mR = 0.00876 mGy = 8.76 μGy,

Therefore, the irradiation dose measurement dose is calculated by the following equation (4).

The calculation of the temperature atmospheric pressure correction is calculated in detail by the following equation (4).

Here, 't' at the time of measurement is temperature, and ' P ' is atmospheric pressure.

The main control unit 113 displays the amount of absorbed dose of the subject and the distance data to the subject calculated on the actual X-ray absorption dose of the subject on the liquid crystal display unit 115 through the above process.

FIG. 3 is a structural view of an X-ray acquiring apparatus of a photographing area display apparatus of a portable X-ray according to an embodiment of the present invention, in which X-rays generated at the focus 123a of the X- .

The X-ray emitted from the X-ray tube 123 is irradiated only in a limited irradiation region through the irradiation port 103 of the irradiation field limiting mechanism 102.

That is, the irradiation field limiting mechanism 102 shields the entirety except the irradiation port 103 with lead so that the X-ray is irradiated only through the irradiation port 103, and the infrared ray distance sensor 101 to measure the distance to the subject 100.

In the inside of the irradiation field limiting mechanism 102, a reflecting mirror 104 and a CCD camera module 112 are provided to acquire a subject surface image.

The reflector 104 reflects the visible light incident through the irradiation aperture 103 at a predetermined angle and the visible light reflected through the reflector 104 is incident on the CCD camera module 112, .

At this time, since the X-ray and the visible light both have a straight-line property, the angle of the X-ray irradiated through the irradiation port 103 and the angle of the visible ray incident through the irradiation port 103 coincide with each other. That is, since the X-ray irradiation range is the same as that of the subject image reflected through the reflector 104, the main control unit 113 controls the image of the subject displayed through the liquid crystal display unit 115 and the range of the X- Are displayed in the same manner.

In addition, the distance between the center point of the CCD camera module 112 and the reflector must be the same as the center point of the X-ray tube 123.

Here, in another embodiment, the surface image of the subject is acquired to be wider than the X-ray irradiation range in accordance with the position of the reflector 104 and the CCD camera module 112, The entire surface image of the X-ray is displayed on the liquid crystal display part 115 and the X-ray irradiation range is displayed at the same time. At this time, the X-ray irradiation area is displayed by adding a rectangle line or surface color so that the user can identify it.

FIG. 6 is a screen display of a liquid crystal display according to an embodiment of the present invention. The image of the subject 100, the X-ray irradiation range, the output voltage (kV) The time (s), the distance L from the spot of the X-ray tube 123 to the subject, and the skin absorbed dose G Gy calculated through the time are displayed on the screen.

As described above, the imaging area display apparatus of the portable X-ray according to the present invention

The present invention is not limited thereto and various changes and modifications may be made to those skilled in the art without departing from the scope of the present invention. There is that technical spirit to the extent possible.

100: Subject 101: Infrared distance sensor
102: Surveillance limiter 103: Surveyor
104: reflector 110: image processing device
111: AD conversion unit 112: CCD camera module
113: main control unit 114:
115: liquid crystal display part 120: X-ray oscillation part
121: X-ray controller 122: High-voltage oscillator
123: X-ray tube

Claims (11)

An X-ray irradiating through an X-ray oscillating section constituted by an X-ray tube for emitting X-rays, a high-pressure generating section for applying a high voltage to the X-ray tube, and an X-ray controlling section for controlling the high- In a portable X-ray photographing area display device for displaying an irradiated area of the X-
An object image acquiring unit acquiring an object image with respect to an X-ray irradiation range taken by the X-ray oscillating unit;
A liquid crystal display unit for displaying the subject image obtained through the subject image acquiring unit, the X-ray photographing range, the distance to the X-ray irradiating position, the X-ray absorbed dose and the photographed X-ray image in real time;
A distance measuring unit for measuring a distance from the X-ray tube to the X-ray irradiating position; And
An X-ray absorbing dose calculation unit that calculates an X-ray absorbed dose of the subject based on the X-ray irradiation condition, and outputs the X-ray absorbed dose to the subject, And a main control unit for displaying the image on the liquid crystal display unit. The method according to claim 1,
Wherein the distance measuring unit includes an infrared ray distance sensor,
Further comprising an A / D converting unit for converting a voltage value measured by the infrared distance sensor into a digital value and outputting the digital value to the main control unit. The method according to claim 1,
Wherein the main control unit further comprises a database for storing and providing absorbed dose table data according to X-ray radiation conditions. The method according to claim 1,
Wherein the irradiation condition for calculating the X-ray absorption dose in the main control unit includes at least one of a temperature air pressure correction, an irradiation dose measurement dose, and an irradiation distance measured by the distance measurement unit,

(The tissue-absorbed dose conversion coefficient is predefined according to the type of the subject), and calculates the absorption effective dose of the subject. 5. The method of claim 4,
In the above equation, the irradiation dose absorbing effective dose according to the distance is calculated by the following equation

('L' is the distance from the focus to the subject, and '1' is the distance from the focus of the tube to the infrared distance sensor attached to the end of the X-ray field limiting mechanism) Device. 6. The method of claim 5,
The dose to be measured is determined by the main control unit according to the following equation

('X' is the absorption dose table data set in advance according to the irradiation condition). The method according to claim 1,
Wherein the object image acquiring unit is provided in an irradiation field limiting mechanism provided with an X-ray irradiating unit for limiting an irradiation range of an X-ray irradiated to a subject from the X-ray tube at a front end of the X- X-ray shooting area display device. 8. The method of claim 1 or 7,
The object image acquiring unit includes a reflector for reflecting visible light incident through the X-ray irradiator; And
And a CCD camera module or a CMOS sensor for acquiring an image of a subject from visible light incident through the reflector. 9. The method of claim 8,
Wherein the X-ray irradiation range obtained through the CCD camera module or the CMOS sensor and irradiated through the X-ray irradiating unit is the same as the image displayed on the liquid crystal display unit. 9. The method of claim 8,
The image obtained from the CCD camera module or the CMOS sensor and displayed on the liquid crystal display is wider than the X-ray irradiation range irradiated through the X-ray irradiator,
Wherein the X-ray irradiation range is displayed on a screen so that the X-ray irradiation range can be visually recognized on the liquid crystal display unit. 9. The method of claim 8,
Wherein the distance from the CCD camera module or the CMOS sensor to the center of the reflector and the distance from the center of the reflector to the spot of the X-ray tube are the same.

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