KR101620679B1 - X-ray photographing apparatus - Google Patents

Abstract

According to the present invention, the X-ray irradiation range of the collimator is first set to the reference irradiation range according to the height, adult, child, etc., and then the X-ray irradiation range of the collimator is finely adjusted according to the Frankfurt horizontal line of the examinee To an X-ray imaging apparatus capable of adjusting an X-ray dose to a subject and minimizing the amount of exposure.
An X-ray source for irradiating an X-ray, a collimator having a slit through which an X-ray irradiated from the X-ray source passes, an X-ray sensor for irradiating through the collimator and detecting an X-ray passing through a head of the examinee, And a horizontal line laser for irradiating the head of the examinee with a laser beam in the form of a horizontal line for horizontal alignment of the head, the apparatus comprising: The X-ray irradiation range of the slit of the collimator is adjusted by interlocking with the vertical position adjustment amount of the horizontal line laser so that the vertical line laser can be adjusted so that the beam can be illuminated.

Description

[0001] X-RAY PHOTOGRAPHING APPARATUS [0002]

The present invention relates to an X-ray photographing apparatus, and more particularly, to a X-ray photographing apparatus in which an X-ray irradiation range of a collimator is first set to a reference examination range according to height, adult, children, The present invention relates to an X-ray imaging apparatus capable of adjusting an X-ray irradiation dose to a subject by finely adjusting the X-ray irradiation range of a collimator and minimizing the amount of exposure.

Generally, in the dentistry, an X-ray imaging apparatus capable of performing X-ray imaging is installed to treat teeth and various periodontal diseases, and to grasp the state of the teeth and alveolar bone for the purpose of correction of the dental heat.

An X-ray imaging apparatus used in a dentistry transmits a predetermined amount of X-rays to a part of a body part to be photographed, detects the intensity of the transmitted X-rays, converts it into an electric signal corresponding to the X- At this time, the computer acquires the image by obtaining the intensity of the X-ray of each point of the body imaging region and processing it.

As the above-described X-ray imaging apparatus, an X-ray imaging apparatus for CT (computerized tomography) capable of capturing a three-dimensional stereoscopic image and a panoramic X-ray imaging apparatus capable of imaging in two-dimensional plane are mainly used.

An X-ray imaging apparatus for CT is an imaging apparatus that displays a single-faced image of a body that can not be represented by a normal imaging. The X-ray is projected on a human body while rotating at a constant angle over 360 degrees. The transmitted X- And reconstructs the absorption value of the cross section of the human body to display the image.

In addition, the panoramic X-ray imaging apparatus is a device that can take a panoramic image so that the whole tooth condition and the jaw joint can be seen at a glance by taking an entire image in the circumferential direction around the X-ray generator.

1 is a perspective view showing a general dental panoramic imaging apparatus.

1, a dental panoramic imaging apparatus 10 includes a pedestal 11 supported by a bottom surface of a building, a support 11 provided on the pedestal 11 to be supported by the pedestal 11, A sliding rail 12b extending from the upper end of the supporting column 12a and a rising portion 13 formed in a substantially U shape so as to be vertically moved along the sliding rail 21; And a gantry 14 coupled to the lower portion of the elevating portion 13 via a rotation axis so as to be linearly movable and rotatable.

The gantry 14 includes an X-ray source 15a for irradiating X-rays and a collimator 15b for adjusting the irradiation range of X-rays irradiated from the X-ray source 15a. Ray sensor 16 which is irradiated through the collimator and detects X-rays passing through the examinee.

The photographer grips the knob 17 at the time of photographing and fixes the jaw to the pedestal 18. The operator operates the touch LCD 19 to set the image photographing conditions and then photographs the examinee.

2 is a front view showing a collimator structure of a general dental panoramic imaging apparatus.

The collimator 15b includes a main plate 15b-1, a sub-plate 15b-3 that slides in the left-right direction along the rail 15b-2 on the main plate 15b-1 for mode change, A motor 15b-4 for slidably moving the sub-plate 15b-3, an adult image pickup lead 15b-5 provided at one side of the sub-plate 15b-3, And a lead 15b-6 for a child image capturing provided on the other side.

Thus, the sub-plate 15b-3 is slid in the left-right direction along the rail 15b-2 by the motor 15b-4 to connect the adult image capturing lead 15b-5 to the X-ray source 15a To shoot in the adult mode or to align the lead 15b-6 for the image pickup for the child with the X-ray source 15a.

However, the conventional collimator of the dental panoramic imaging apparatus classifies adults and children so as to adjust the positions of two cooking leads 15b-5 and 15b-6 to be selectively aligned with the X-ray source 15a Since the height of the exposed X-rays is adjusted, there is a problem that only the imaging is limited to two cases.

That is, unnecessary X-rays are excessively exposed to a subject having a head of a size relatively smaller than a general head size.

Registration Utility Model Bulletin No. 20-0449959 (Aug. 19, 2010)

The object of the present invention is to solve the above problems of the prior art by providing an X-ray irradiation range of the collimator according to height, adult, children, etc., The present invention provides an X-ray imaging apparatus capable of adjusting an X-ray irradiation amount according to a subject by finely adjusting the X-ray irradiation range of the collimator and minimizing the amount of exposure.

According to an aspect of the present invention, there is provided an X-ray photographing apparatus including an X-ray source for irradiating X-rays, a collimator having slits through which X- An X-ray sensor for detecting an X-ray passing through the head of the examinee, and a horizontal line laser for irradiating a laser beam in the form of a horizontal line toward the head of the examinee for horizontally aligning the examinee's head The vertical line laser is adjustable so that a laser beam of the horizontal line laser can be irradiated onto a predetermined reference horizontal line of the examinee's head, The X-ray irradiation range of the slit of the slit is adjusted.

Preferably, the predetermined reference horizontal line of the examinee's head is a Frankfort Horizontal Line.

Preferably, the horizontal line laser is vertically slidable to adjust the vertical position of the horizontal line laser. The vertical position of the horizontal line laser is controlled by the laser position adjusting means, The X-ray irradiation range of the collimator can be adjusted based on the adjustment amount.

Preferably, the collimator includes: a slit plate having a slit for limiting an irradiation range of X-rays irradiated from the X-ray source; A shielding plate for shielding one side of the slit; And plate position adjusting means for adjusting the size of the slit by vertically sliding at least one of the slit plate and the shield plate on the basis of the vertical position adjustment amount of the horizontal line laser.

Preferably, the slit plate is provided to be fixed, and the shield plate is provided so as to be able to slide up and down. The plate position adjusting means vertically slides the shield plate on the basis of the vertical position adjustment amount of the horizontal line laser, You can adjust the size.

Preferably, the plate position adjusting means comprises: a plate driving drive motor; A movable screw for plate adjustment which is rotated by receiving the rotational force of the plate-regulating drive motor; And a plate-moving moving block which is inserted into the plate-adjusting moving screw and moved up and down along the plate-adjusting moving screw by rotation of the plate-adjusting moving screw, wherein the plate- And can be slid together with the plate-moving block when the plate-moving block is vertically slid.

Preferably, the engaging piece is extended on one side of the plate-moving moving block, the shield plate is provided on one side surface of the engaging piece, and the LM guide block sliding along the LM guide rail is provided on the other side of the engaging piece. have.

Preferably, the slit plate is vertically slidable and the shield plate is fixed, and the plate position adjusting means vertically slides the slit plate on the basis of the vertical position adjustment amount of the horizontal line laser, You can adjust the size.

Preferably, the laser position adjusting means includes a laser driving drive motor; A moving screw for laser control which rotates by receiving the rotational force of the driving motor for adjusting laser through a timing belt; And a laser control sliding block that is axially inserted into the laser control moving screw and is slid up and down along the laser control moving screw by rotation of the laser control moving screw, And is slidable together with the laser control movable block when the laser control movable block is vertically slid.

In the present invention as described above, the X-ray irradiation range of the collimator is first set to the reference irradiation range according to the elongation, adult, children, etc., and then the X-ray irradiation range of the collimator is adjusted to the Franklin horizontal line of the examinee By finely adjusting the X-ray dose, it is possible to adjust the X-ray dose to the subject and minimize the amount of exposure.

Further, the shield plate is moved up and down by the movable plate for adjusting the plate, and furthermore, the shield plate can be precisely positioned without shaking by the LM guide.

1 is a perspective view showing a general dental panoramic imaging apparatus.
2 is a front view showing a collimator structure of a general dental panoramic imaging apparatus.
3 is a schematic view showing an X-ray imaging apparatus according to an embodiment of the present invention.
4 is a perspective view illustrating a part of an X-ray imaging apparatus according to an embodiment of the present invention.
5 is another perspective view showing a part of an X-ray imaging apparatus according to an embodiment of the present invention.
6 is a front view showing a part of an X-ray imaging apparatus according to an embodiment of the present invention.
7 is a diagram for explaining an adult mode operation of the X-ray imaging apparatus according to an embodiment of the present invention.
8 is a view for explaining a child mode operation of the X-ray imaging apparatus according to an embodiment of the present invention.
9 is a view showing a Frankfurt horizontal line.

The present invention may be embodied in many other forms without departing from its spirit or essential characteristics. Accordingly, the embodiments of the present invention are to be considered in all respects as merely illustrative and not restrictive.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms.

The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

In the present application, the terms "comprises", "having", "having", and the like are intended to specify the presence of stated features, integers, steps, operations, components, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like or corresponding elements are denoted by the same reference numerals, and a duplicate description thereof will be omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

An X-ray imaging apparatus according to an embodiment of the present invention includes a pedestal supported by a bottom surface of a building, a supporting column provided on the pedestal to be supported by the pedestal, And a gantry coupled to the lower portion of the elevating portion through a rotation axis so as to be linearly movable and rotatable. The gantry includes a sliding rail formed at an upper end of a supporting column, a vertically extending portion formed to be vertically moved up and down along the sliding rail, And a detailed description thereof is omitted since it is the same as that described in the background art.

The X-ray imaging apparatus according to an embodiment of the present invention includes an X-ray source 100, a collimator 200, an X-ray sensor 300 and a horizontal line laser 400, As shown in the figure, an X-ray source 100 is provided on one side of the gantry 14 and an X-ray sensor 300 is provided on the other side of a gantry 14 facing the X-ray source 100, The collimator 200 is provided on one side of the gantry 14, specifically, on the path of X-rays irradiated from the X-ray source 100.

The X-ray source 100 generates X-rays for X-ray imaging and irradiates X-rays toward the head of the examinee.

The collimator 200 is a kind of X-ray diaphragm that adjusts the irradiation range of the X-ray irradiated from the X-ray source 100 and selectively controls the X-ray irradiation range depending on the elongation of the examinee, .

The X-ray sensor 300 detects X-rays passing through the head of the examinee after being irradiated from the X-ray source 100 through the collimator 200 to the head of the examinee.

The horizontal line laser 400 irradiates a laser beam in the form of a horizontal line toward the head of the examinee for horizontally aligning the examinee's head.

As described above, the X-ray imaging apparatus including the X-ray source 100, the collimator 200, the X-ray sensor 300, and the horizontal line laser 400 is configured to use the horizontal line laser 400 The X-ray source 100 irradiates the X-ray source 100 with the horizontal direction of the head of the subject being aligned, and the X-ray emitted from the X-ray source 100 passes through the collimator 200, And the X-ray whose irradiation region has been determined through the collimator 200 passes through the head of the examinee and is detected by the X-ray sensor 300.

For example, the height of the horizontal line laser 400 is adjusted so that the laser beam is directed to the Frankfort Horizontal Line (FHL) of the examinee so that the head of the examinee is aligned in the horizontal direction .

As shown in FIG. 9, the Frankfurt horizontal line refers to a horizontal line connecting the vicinity of the ear canal and passing through the cheekbones.

The X-ray imaging apparatus according to an embodiment of the present invention may be configured such that a laser beam of the horizontal line laser 400 is aligned with a Frankfurt horizontal line FHL, which is a predetermined reference horizontal line for horizontal alignment of the subject's head The X-ray irradiation range of the slit 210s of the collimator 200 is controlled in accordance with the height adjustment amount of the horizontal line laser 400, .

Hereinafter, the configuration and relationship of the collimator 200 and the horizontal line laser 400 will be described with reference to FIGS. 4 to 6. FIG.

4 to 6, the collimator 200 includes a slit plate 210, a shielding plate 220, and a plate position adjusting unit 230.

The slit plate 210 is a plate member formed with slits 210s extending in the vertical direction to limit an irradiation range of X-rays irradiated from the X-ray source 100, And may be fixed to the base plate BP so as to be positioned at a corresponding position of the base plate BP corresponding to the X-ray irradiated from the source 100. [

6, the upper end of the slit 210s is connected to the upper end of the slit 210s, and the lower end of the slit 210s is connected to the upper end of the slit 210s. And the size of the slit 210s can be adjusted according to the vertical position of the shielding plate 220. FIG.

The plate position adjusting means 230 vertically slides at least one of the slit plate 210 and the shield plate 220 on the basis of the vertical position adjustment amount of the horizontal line laser 400, For example, as shown in FIG. 6, the shield plate 220 is configured to slide up and down to adjust the size of the slit 210s.

The plate position adjusting means 230 includes a plate adjusting driving motor 231, a plate adjusting moving screw 233, and a plate adjusting moving block 235.

The plate-adjusting moving screw 233 is a driving source for rotating the plate-adjusting moving screw 233, and the plate-adjusting moving screw 233 is rotated by a component of the plate-adjusting driving motor 231, And the plate-adjusting moving block 235 is axially inserted into the plate-adjusting moving screw 233 and is moved upward and downward along the plate-adjusting moving screw 233 by rotation of the plate-adjusting moving screw 233 Element.

For example, when the plate-adjusting moving screw 233 rotates in the clockwise direction, the plate-adjusting moving screw 233 rotates in the clockwise direction during the regular rotation of the plate-adjusting driving motor 231, The moving block 235 moves downward. When the plate-adjusting moving motor 231 rotates counterclockwise, the plate-moving moving screw 233 rotates in a counterclockwise direction during the reverse rotation of the plate-adjusting driving motor 231, The adjusting moving block 235 is moved upward.

The shielding plate 220 is provided at one side of the plate-adjusting moving block 235 and slides together with the plate-moving block 235 when the plate-moving block 235 is vertically slid. Specifically, A joining piece 235a is extended to one side of the adjusting moving block 235 and the shielding plate 220 is provided on one side of the joining piece 235a and slides together with the plate moving block 235 .

The LM guide block 236b is slid along the LM guide rail 236a fixed to the base plate BP at the other side of the coupling piece 235a. The upper and lower positions can be precisely adjusted by the LM guide rail 236a and the LM guide block 236b without shaking.

The plate position adjusting means 230 configured as described above adjusts the size of the slit 210s by sliding the shield plate 220 up and down based on the vertical position adjustment amount of the horizontal line laser 400, The adjustment of the vertical position of the line laser 400 will be described in detail in the description of the horizontal line laser 400.

In the above description, the slit plate 210 is fixed and the shield plate 220 is configured to be vertically slid. However, the slit plate 210 may be slidable up and down, The slits 210s may be formed to be fixed to the slits 210s so that the size of the slits 210s may be adjusted.

3, the horizontal line laser 400 is configured to irradiate a laser beam in the form of a horizontal line toward one side of the head of the examinee. More specifically, the horizontal line laser 400 is vertically slid by the laser position adjusting means 410 And the vertical position is adjusted.

The laser position adjusting means 410 adjusts the horizontal position of the laser beam in accordance with the horizontal horizontal line FHL, which is a predetermined reference horizontal line for horizontal alignment of the subject's head, The vertical position of the horizontal line laser 400, that is, the height thereof, is adjusted so that it can be irradiated.

Specifically, the laser position adjusting unit 410 includes a laser driving driving motor 411, a laser controlling moving screw 413, and a laser controlling moving block 415.

The laser adjusting movable screw 413 is a driving source for rotating the laser adjusting movable screw 413 and the laser adjusting movable screw 413 is driven by a driving force of the laser adjusting driving motor 411 through a timing belt 412 And the laser control moving block 415 is inserted into the laser control moving screw 413 and inserted into the laser controlling moving screw 413 by rotation of the laser controlling moving screw 413, As shown in Fig.

For example, when the laser controlling movable motor 413 rotates in the clockwise direction, the laser controlling movable screw 413 rotates in the clockwise direction during the regular rotation of the laser controlling driving motor 411, The moving block 415 moves downward. The movable adjusting screw 413 rotates in the counterclockwise direction when the driving motor 411 for controlling the laser is rotated in the counterclockwise direction. When the movable screw 413 rotates counterclockwise, The adjusting moving block 415 is moved upward.

The horizontal line laser 400 is provided on one side of the laser control moving block 415 and slides together with the laser control moving block 415 when the laser control moving block 415 slides up and down.

A guider (not shown) slidable along the vertical slit h is provided on the front side of the laser control moving block 415, and the laser control moving block 415 can be stably moved up and down by the guider.

Hereinafter, the operation of the X-ray imaging apparatus configured as described above will be described with reference to Figs. 7 and 8. Fig.

First, the operator first sets the X-ray irradiation range of the collimator 200 to the reference irradiation range depending on the elongation of the examinee, the adult, or the child.

For example, in the case of an adult having a length of 170 cm, the height of the gantry is adjusted to a height corresponding to the examinee's elongation (170 cm), and as shown in FIG. 7 (a) The shielding plate 220 is positioned so as to be in the reference irradiation range.

In the case of a child with a height of 140 cm, the height of the gantry is adjusted to a height corresponding to the examinee's height (140 cm), and as shown in Fig. 8 (a) (220) is positioned so as to be in the reference irradiation range.

That is, as shown in FIG. 3, the X-ray irradiation range of the collimator 200 is set to the reference range, and the height of the horizontal line laser 400 is set to the reference height.

Next, as described above, when the height of the gantry is adjusted and the X-ray irradiation range of the collimator 200 is set to the reference irradiation range, the horizontal line laser (FHL) The operator adjusts the vertical position of the horizontal line laser 400 so that the horizontal line laser beam irradiated by the horizontal line laser 400 can be irradiated.

Specifically, the operator controls the rotation direction and the rotation amount of the laser control driving motor 411 by operating a touch LCD ('19' in FIG. 1) or another control means provided at one side of the apparatus, The adjusting movable screw 413 and the laser controlling movable block 415 interlock with each other and the vertical position of the horizontal line laser 400 can be adjusted.

The X-ray irradiation range of the collimator 200 is adjusted based on the vertical position adjustment amount of the horizontal line laser 400 at the same time as the vertical line laser 400 is adjusted.

Specifically, the plate-adjusting driving motor 231, the plate-adjusting moving screw 233, and the plate-adjusting moving block 235 are interlocked with each other in accordance with the vertical position adjustment amount of the horizontal line laser 400. At this time, The upper and lower position adjustment amount of the adjustment moving block 235 is driven to be the same amount as the vertical position adjustment amount of the horizontal line laser 400. [

That is, as shown in FIG. 3, the height of the horizontal line laser 400 is adjusted to be an adjustment height, and as the height of the horizontal line laser 400 is adjusted to the adjustment height at the reference height, the collimator 200 ) Is adjusted to the adjustment range in the reference range.

For example, when the horizontal line laser 400 moves downward by 3 mm, the plate-moving block 235 also moves downward by 3 mm, so that the shield plate 220 moves the slit 210s, So that the size of the slit 210s is reduced.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that many other obvious modifications can be made therein without departing from the scope of the invention. Accordingly, the scope of the present invention should be interpreted by the appended claims to cover many such variations.

100: X-ray source 200: collimator
210: Slit plate 210s: Slit
220: shielding plate 230: plate position adjusting means
231: Plate adjusting drive motor 233: Plate adjusting movable screw
235: plate moving block 235a:
236a: LM guide rail 236b: LM guide block
300: X-ray sensor 400: Horizontal line laser
410: Laser position adjusting means 411: Driving motor for laser control
412: timing belt 413: movable screw for laser adjustment
415: Mobile block for laser control FHL: Frankfurt horizontal line

Claims (9)

An X-ray source for irradiating an X-ray, a collimator having a slit through which an X-ray irradiated from the X-ray source passes, an X-ray sensor for irradiating through the collimator and detecting an X-ray passing through a head of the examinee, An X-ray imaging apparatus comprising a horizontal line laser for irradiating a laser beam in the form of a horizontal line toward a head of the examinee for horizontal alignment of the head,
Wherein the horizontal line laser is configured such that a vertical position of the horizontal line laser is adjustable so that a laser beam of the horizontal line laser can be irradiated onto a predetermined reference horizontal line of the examinee's head,
The collimator may include at least one of a slit plate having a slit for limiting an irradiation range of X-rays irradiated from the X-ray source, a shield plate for shielding one side of the slit, and at least one of the slit plate and the shield plate, And a plate position adjusting means for adjusting the size of the slit,
At least one of the slit plate and the shield plate is slid upwardly in conjunction with the upward position adjustment amount of the horizontal line laser, and at least one of the slit plate and the shield plate is interlocked with the downward position adjustment amount of the horizontal line laser And the X-ray irradiation range of the slit is controlled by controlling the size of the one shielding section of the slit by sliding downward. The method according to claim 1,
The predetermined reference horizontal line of the examinee's head is,
Wherein the X-ray imaging apparatus is a Frankfort Horizontal Line. The method according to claim 1,
And a laser position adjusting means for adjusting the vertical position of the horizontal line laser by vertically sliding the horizontal line laser,
Wherein an X-ray irradiation range of the collimator is adjusted based on a vertical adjustment amount of the horizontal line laser adjusted by the laser position adjustment means. delete The method according to claim 1,
The shield plate is vertically slidable. The plate position adjusting unit adjusts the size of the slit by sliding the shield plate up and down based on the vertical position adjustment amount of the horizontal line laser And an X-ray imaging unit for radiating X-rays. 6. The method of claim 5,
The plate position adjusting means,
A plate-regulating drive motor; A movable screw for plate adjustment which is rotated by receiving the rotational force of the plate-regulating drive motor; And a plate-moving moving block which is axially inserted into the plate-adjusting moving screw and moves up and down along the plate-adjusting moving screw by rotation of the plate-adjusting moving screw,
Wherein the shielding plate is provided on one side of the plate-adjusting moving block and slides together with the plate-adjusting moving block when the plate-moving block is vertically slid. The method according to claim 6,
And the LM guide block is slid along the LM guide rail on the other side surface of the coupling member. The LM guide block may include a plurality of LM guide blocks disposed on one side of the plate- X-ray imaging device. The method according to claim 1,
The slit plate is vertically slidable and the shield plate is fixed. The plate position adjusting means adjusts the size of the slit by vertically sliding the slit plate on the basis of the vertical position adjustment amount of the horizontal line laser And an X-ray imaging unit for radiating X-rays. The method of claim 3,
Wherein the laser position adjusting means comprises:
A drive motor for laser control; A moving screw for laser control which rotates by receiving the rotational force of the driving motor for adjusting laser through a timing belt; And a movable block for laser control which is inserted into the laser-adjusting movable screw and is slid up and down along the laser-adjusting movable screw by rotation of the laser-adjusting movable screw,
Wherein the horizontal line laser is provided at one side of the laser control moving block and slides together with the laser control moving block when the laser control moving block is vertically slid.

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