KR101007826B1 - X-ray photographing device and method for using the same - Google Patents

Abstract

The present invention relates to an X-ray imaging apparatus, the X-ray imaging apparatus according to the present invention is an X-ray source for generating X-rays, an X-ray sensor for detecting the X-rays generated from the X-ray source and passed through the object and the It includes a shielding means for shielding the X-rays so that the X-rays generated from the X-ray source is not detected at the top, bottom, left and right edges of the X-ray sensor, the shooting time because it does not need to take a separate shot for dark scanning By shortening the noise and removing the noise included in the object data using the dark data, there is an effect of obtaining a clear image.

X-ray equipment, dark scanning, shielding means, noise, image acquisition

Description

X-ray photographing device and method for using the same

The present invention relates to an X-ray imaging apparatus, and more particularly, to an X-ray imaging apparatus including an X-ray source, an X-ray sensor, and a shielding means, and by using the X-ray imaging apparatus, an imaging process for dark scanning The present invention relates to an X-ray photographing method for acquiring object data and dark data without omission.

In general, the X-ray imaging apparatus used in the field of medical care transmits a certain amount of X-ray flux to the body part to be photographed, detects the intensity of the transmitted X-rays, and converts it into an electrical signal corresponding to the X-ray intensity Send it to your computer. At this time, the computer obtains an image by processing the X-ray intensity of each point of the body imaging region and processing it.

The X-ray imaging apparatus includes an X-ray sensor that detects the intensity of X-rays. In the X-ray sensor, many cells are arranged like a checker board on a chip.

Each of these cells has a different basic offset value, which may be arbitrarily changed due to temperature and other external influences.

Therefore, since the data obtained by the X-ray imaging apparatus includes considerable noise, it is difficult to obtain a clear image.

Conventionally, in order to improve this, after photographing for image scanning through the X-ray imaging apparatus, photographing for dark scanning under the same conditions as the image scanning.

Here, the dark scanning means an image taken by completely blocking the X-rays input to the X-ray sensor. Dark scanning is not affected by X-rays, but contains noise that is basically generated by offset values of cells.

Thus, by subtracting dark scanning from the captured image scanning to remove such noise, a clear image without noise is obtained.

However, the conventional X-ray photographing apparatus and the photographing method using the same have a problem in that the photographing time is long because image scanning and dark scanning must be obtained every time an image is acquired.

The present invention was devised to solve the above problems, and an object of the present invention is to provide an X-ray imaging apparatus including an X-ray source, an X-ray sensor, and shielding means, and by using the X-ray imaging apparatus, dark scanning The present invention provides an X-ray photographing method for acquiring object data and dark data without omitting a photographing process.

X-ray imaging apparatus according to an embodiment of the present invention is an X-ray source for generating X-rays, an X-ray sensor for detecting the X-rays generated from the X-ray source and passed through the object and the X-ray generated from the X-ray source It comprises a shielding means for shielding the X-ray so that the line is not detected at the upper, lower, left and right edges of the X-ray sensor.

In a preferred embodiment, the shielding means is provided on the front surface of the X-ray source, the collimator to prevent the X-rays generated from the X-ray source is detected at a predetermined edge of the X-ray sensor on the top, bottom, left and right.

In a preferred embodiment, the shielding means is an X-ray blocking member provided on the front surface of the X-ray sensor so that X-rays generated from the X-ray source are not detected at a predetermined edge of the X-ray sensor.

In a preferred embodiment, the X-ray blocking member is made of lead, tungsten and uranium.

In a preferred embodiment, the X-ray blocking member is detachable.

In an exemplary embodiment, the X-ray photographing apparatus includes a base supporting an upper structure, a support pillar installed on the base, a lifting member installed to move up and down in the vertical direction of the support pillar, and connected to a lower portion of the lifting member. Being supported by the jaw support member, the rotary arm support member connected to the upper and lower surfaces of the elevating member, the rotary arm supporting member, and installed on the elevating member and provided with the X-ray source and the X-ray sensor and the rotary arm. It is interposed between the arm and the rotary arm support member, and further comprises a rotary arm drive means for driving the rotary arm.

In a preferred embodiment, the step of preparing an X-ray sensor that does not detect X-rays at a predetermined edge of the upper and lower or left and right by shielding means for shielding the X-ray, the dark edges on the upper and lower or left and right of the X-ray sensor Setting an area, and setting a target area in the remaining areas other than the dark area, acquiring first dark data in the dark area through photographing, and obtaining object data in the target area; Estimating second dark data corresponding to the target area using data, subtracting the second dark data from the object data to obtain image data, and processing the image data to obtain an image. It is made to include.

According to the X-ray imaging apparatus of the present invention, by providing an X-ray imaging apparatus including an X-ray source, an X-ray sensor and shielding means, by using the X-ray imaging apparatus, the object is omitted even if the photographing process for dark scanning is omitted By providing an X-ray photographing method for acquiring data and dark data, it is not necessary to separately photograph each time for dark scanning, thereby shortening the photographing time, and removing the noise included in the object data using the dark data. Has the effect of obtaining.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

<First Embodiment>

1 is a perspective view illustrating an X-ray imaging apparatus according to a first embodiment of the present invention, Figure 2 is a schematic diagram briefly explaining the X-ray source, X-ray sensor and shielding means according to a first embodiment of the present invention 3 is a diagram for explaining raw data according to the first embodiment of the present invention.

1 and 2, the X-ray imaging apparatus 100 according to the first embodiment of the present invention includes a base 110, a support pillar 120, a lifting member 130, a jaw support member 140, Rotating arm support member 150, the rotary arm 160 and the rotary arm driving means 170 is composed of.

The base 110 supports the support pillars 120 on which the components are installed, and the support pillars 120 are installed on one side of the base 110.

Here, the support pillar 120 is provided with the lifting member 130, the lifting member 130 is provided with a control motor, etc. can be moved in the vertical direction to adjust the height appropriately according to the height of the patient Can be.

In addition, the jaw support member 140 is installed below the elevating member 130, the jaw support member 140 is a place where the jaw of the patient is located, the head of the patient on the X-ray imaging apparatus 100 Location.

In addition, the rotary arm support member 150 is connected to the upper surface of the elevating member 130 in the vertical direction, the rotary arm support member 150 is the rotary arm 160 by the rotary arm driving means 170. Support.

The X-ray source 161 generating X-rays and the X-ray sensor 162 detecting X-rays generated by the X-ray source 161 and passing through the object are opposed to each other in the rotation arm 160. Is placed.

In this case, in the X-ray sensor 162, a plurality of cells (not shown) for detecting the intensity of the X-rays are arranged neatly like a checker board, and each of the cells has an arbitrary offset value.

In addition, shielding means for shielding the X-rays on the X-ray sensor 162 so that the X-rays generated from the X-ray source 161 is not detected at a predetermined edge on the top, bottom, left and right sides of the X-ray sensor 162 ( 163 may be provided.

In the first embodiment of the present invention, the shielding means 163 is provided at a predetermined edge of the upper and lower sides of the X-ray sensor 162 side and has a high density material such as lead, tungsten, uranium for shielding the X-rays. It is provided with an X-ray blocking member formed in, it is easy to attach and detach from the X-ray sensor 162 may be used separately if necessary.

The X-ray sensor 162 is formed by the shielding means 163 into a dark area that does not detect X-rays at a predetermined edge on the top, bottom, left, and right sides, and a target area other than the dark area.

Here, the dark region is a region in which X-rays are not detected by the shielding means 163, but there is no influence by X-rays, but includes only noise generated by offset values of cells corresponding to the dark region. It is an area to acquire dark data.

In addition, the target area is an area for detecting X-rays irradiated with the object and is an area for obtaining object data. In this case, the object data includes noise generated by offset values of cells corresponding to the object area 162b.

Thus, the X-ray sensor 162 detects raw data generated by the X-ray source 161 and passed through an object to detect raw data. As shown in FIG. 3, the raw data is detected. 162c is formed of first dark data 162a detected in the dark region of the X-ray sensor 162 and object data 162b detected in the target region of the X-ray sensor 162.

Therefore, the user predicts the second dark data corresponding to the target area by using the first dark data 162a by a computer, and uses the second dark data to extract noise included in the object data 162b. By removing it, it is effective to obtain a clear image.

In addition, the X-ray photographing apparatus 100 shortens the photographing time because it does not have to photograph each time for dark scanning.

Second Embodiment

4 is a perspective view illustrating an X-ray imaging apparatus according to a second embodiment of the present invention, and FIGS. 5A, 5B and 5C are diagrams illustrating shielding means according to a second embodiment of the present invention.

The X-ray imaging apparatus 100a according to the second embodiment of the present invention includes the components of the X-ray imaging apparatus 100 shown in the first embodiment, and the description of the same components as those of FIG. 1 will be omitted. Shall be.

Referring to Figure 4, the shielding means (163a) is provided on the front of the X-ray sensor 162, made of a frame penetrating the center, X-rays radiated in the vertical direction or left and right directions of the X-ray sensor 162 Shield.

In more detail, as shown in FIG. 5A, the shielding means 163a is provided with an X-ray blocking member 164 in the upper and lower edges of the shielding means 163a, so that the upper and lower portions of the shielding means 163a are fixed. It shields the X-rays radiated to the edge, and passes the X-rays radiated in the left and right directions including the center of the shielding means (163a).

In addition, the shielding means 163a is provided with an X-ray blocking member 164 inside the left and right fixed edges of the shielding means 163a, as shown in FIG. 5B. It is also preferable to shield the X-rays radiated to the edge, and to pass X-rays radiated in the vertical direction including the center of the shielding means 163a, and as shown in FIG. 5C, the shielding means 163a An X-ray blocking member 164 is provided in the upper and lower sides of the predetermined edge to shield the X-rays radiated to the upper and lower and left and right constant edges of the shielding means 163a, and the center of the X-ray shielding means 163a. It can also pass through X-rays emitted.

Third Embodiment

6 is a schematic diagram briefly explaining an X-ray source, an X-ray sensor and shielding means according to a third embodiment of the present invention.

The X-ray imaging apparatus according to the third embodiment of the present invention includes the components of the X-ray imaging apparatus shown in the first and second embodiments, and the description of the same components described above will be omitted. .

Referring to FIG. 6, the shielding means 163b is provided on the front surface of the X-ray source 161, and X-rays generated by the X-ray source 161 are fixed to the upper, lower, left, or right sides of the X-ray sensor 162. The X-rays are shielded as a collimator so that they are not detected at the edges.

If the conventional collimator 10 is formed to prevent scattering of X-rays generated from an X-ray source, the collimator according to the third embodiment of the present invention prevents scattering of X-rays and at the same time the X-ray source 161 Slots are formed in regions other than areas corresponding to the upper and lower or left and right predetermined edges of the X-rays to pass the X-rays, thereby preventing the X-ray sensor 162 from detecting X-rays at the upper and lower or left and right predetermined edges.

However, the shielding means 163b using the collimator has a disadvantage of providing the possibility of detecting the X-rays at a predetermined edge on the upper, lower, left and right sides of the X-ray sensor 162 by diffraction of the X-rays.

Fourth Embodiment

7 is a schematic diagram briefly explaining an X-ray source, an X-ray sensor and shielding means according to a fourth embodiment of the present invention.

The X-ray imaging apparatus according to the fourth embodiment of the present invention includes the components of the X-ray imaging apparatus shown in the first to third embodiments, and the description of the same components described above will be omitted. do.

Referring to FIG. 7, the shielding means 163c is provided on the front surface of the X-ray blocking member 164 and the X-ray source 161 which are provided at a predetermined edge on the front, bottom, left and right sides of the X-ray sensor 162. An X-ray generated from the line source 161 is formed of a collimator 165 to prevent the X-ray sensor 162 from being detected at a predetermined edge on the top, bottom, left and right sides.

The shielding means 163c may detect the possibility that the shielding means 163c is detected at an upper, lower, left, or right edge of the X-ray sensor 162 by diffraction of X-rays generated by the X-ray source 161 which is a disadvantage of the third embodiment of the present invention. It is prevented by the X-ray blocking member 164.

8 is a flowchart illustrating an operating state of the X-ray imaging apparatus according to the present invention.

Hereinafter, an operating state of the X-ray imaging apparatus 100 will be described with reference to FIG. 8.

First, a shielding means for shielding X-rays is provided to prepare an X-ray sensor that does not detect X-rays at a predetermined edge on the upper, lower, or left and right sides (S100). The target area is set in the remaining areas except the dark area (S200).

In addition, the patient is positioned at the center point between the X-ray source 161 and the X-ray sensor 162 to take a picture.

Thus, the X-ray source 161 generates X-rays to irradiate the body part of the patient, and the X-rays passing through the patient are detected by the X-ray sensor 162 through the shielding means 163. .

Here, the dark region is obtained by the first dark data 162a including noise due to offset values of cells corresponding to the dark region, although the dark region is not affected by X-rays. The detected object data 162b is obtained (S300).

Here, the object data 162b includes noise due to offset values of cells corresponding to the target area, and thus, when the object data 162b is processed by a computer (not shown) and acquired as an image, distortion may be caused. A severe image is acquired.

Therefore, the user predicts the second dark data corresponding to the target area by using the first dark data 162a by the computer (S400), and subtracts the second dark data from the object data 162b. Acquiring image data from which noise has been removed (S500), and processing the image data to acquire an image photographed by the X-ray imaging apparatus 100 (S600).

In the above, the configuration and operation of the present invention have been shown in accordance with the above description and drawings, but this is merely described, for example, and various changes and modifications are possible without departing from the spirit and scope of the present invention. to be.

1 is a perspective view illustrating an X-ray imaging apparatus according to a first embodiment of the present invention.

2 is a simplified diagram briefly explaining an X-ray source, an X-ray sensor, and shielding means according to the first embodiment of the present invention.

3 is a diagram for explaining row data according to a first embodiment of the present invention.

4 is a perspective view illustrating an X-ray imaging apparatus according to a second embodiment of the present invention.

5A, 5B and 5C are diagrams illustrating shielding means according to a second embodiment of the present invention.

6 is a simplified diagram briefly explaining an X-ray source, an X-ray sensor, and shielding means according to a third embodiment of the present invention.

7 is a simplified diagram briefly explaining an X-ray source, an X-ray sensor and shielding means according to a fourth embodiment of the present invention.

8 is a flowchart illustrating an operating state of the X-ray imaging apparatus according to the present invention.

<Code Description of Main Parts of Drawing>

100: X-ray imaging device 110: base

120: support pillar 130: elevating member

140: jaw support member 150: rotary arm support member

160: rotary arm 161: X-ray source

162: X-ray sensor 162a: dark area

162b: Target area 162c: Low data

163: shielding means 170: rotary arm drive means

Claims (7)

An X-ray source for generating X-rays; An X-ray sensor that detects X-rays generated by the X-ray source and passing through an object; And And a shielding means provided on the front of the X-ray sensor, and shielding the X-rays at a predetermined edge of the X-ray sensor from the X-ray source. The X-ray sensor simultaneously acquires dark data for which X-rays are not detected by the shielding means and object data directly detected by the X-ray sensor through the object, and uses the dark data to generate noise of the object data. X-ray imaging apparatus, characterized in that for removing. The method of claim 1, The shielding means is provided on the front of the X-ray source, X-ray imaging apparatus, characterized in that the X-rays generated from the X-ray source is not detected at a predetermined edge of the X-ray sensor on the top, bottom, left and right. delete The method of claim 1, The X-ray shield means X-ray imaging apparatus, characterized in that consisting of lead, tungsten and uranium. The method of claim 4, wherein X-ray imaging apparatus, characterized in that the X-ray shield means detachable. The method according to any one of claims 1, 2, 4 and 5, The X-ray imaging device: A base supporting the superstructure; A support pillar installed on the base; An elevating member installed to elevate and displace in the vertical direction of the support pillar; A jaw support member connected to a lower portion of the elevating member; A rotary arm support member connected to an upper portion of the elevating member; A rotary arm supported by the rotary arm supporting member and installed on the elevating member and provided with the X-ray source and the X-ray sensor; And And an rotation arm driving means interposed between the rotation arm and the rotation arm support member to drive the rotation arm. Preparing an X-ray sensor having a shielding means for shielding the X-ray, X-rays are not detected at a predetermined edge of the upper and lower or left and right; Setting a dark area on a predetermined edge of the X-ray sensor on the top, bottom, left, and right sides of the X-ray sensor and setting it as a target area on the remaining areas except the dark area; Acquiring first dark data in the dark region through photographing and obtaining object data in the target region; Predicting second dark data corresponding to the target area by using the first dark data; Subtracting the second dark data from the object data to obtain image data; And Processing the image data to obtain an image; x-ray imaging method comprising a.

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