KR20160036128A - X-ray photographing apparatus - Google Patents

Abstract

The present invention relates to an X-ray photographing apparatus, and more particularly, to an X-ray photographing apparatus including an X-ray source to irradiate X-ray, a collimator to adjust an irradiation scope of the X-ray irradiated by the X-ray source, and an X-ray sensor to detect the X-ray which is irradiated through the collimator and passes through an examinee′s head part. The collimator includes a slit plate containing a slit for limiting the irradiation scope of the X-ray irradiated by the X-ray source, a slit unit containing an adjusting unit for adjusting a plane slope and a plane position of the slit plate, and a shielding unit containing a shielding plate for shielding one lateral section of the slit. The X-ray photographing apparatus also includes a calibration filter which is disposed in front of or in the rear of the collimator, and may selectively move, by a filter moving device, to an operational point positioned along an irradiation path of X-ray irradiated from the X-ray source to the X-ray sensor, or a non-operational point positioned off the irradiation path of X-ray irradiated from the X-ray source to the X-ray sensor.

Description

[0001] X-RAY PHOTOGRAPHING APPARATUS [0002]

The present invention relates to an X-ray imaging apparatus, and more particularly, to an X-ray imaging apparatus capable of precisely adjusting a plane inclination of a slit plate of a collimator and a plane position of a slit plate and a plane inclination of a shield plate, , And children, the X-ray irradiation range of the collimator is first set to the reference range, and the X-ray irradiation range of the collimator is finely adjusted according to the Frankfurt horizontal line of the examinee who is actually inspected, And the calibration filter required for the calibration of the device can be driven to slide upward or downward, so that the device can be easily calibrated.

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.

In addition, in order to take an X-ray, the plane inclination and plane position of the cooking lead used for photographing out of the two cooking leads 15b-5 and 15b-6 must be precisely set. In the conventional dental panoramic imaging apparatus Since the setting of the plane inclination and the plane position of the two cooking leads 15b-5 and 15b-6 provided in the collimator is performed by the operation of the operator, not only is it greatly influenced by the experience and skill of the operator, There was an impossible problem.

In order to calibrate the X-ray imaging apparatus, after the two cooking leads 15b-5 and 15b-6 are separated from the main plate 15b-1, the holes 15b-1 of the main plate 15b- -h), it is inconvenient to perform the preceding operation for calibration.

On the other hand, in the conventional X-ray imaging apparatus, in order to perform the calibration of the X-ray sensor, it is necessary that the operator inserts the calibration filter through the attachment means so that the calibration filter can be positioned on the optical path of the X- It is necessary to carry out the calibration in the attached state and the operator has to remove the calibration filter when the calibration of the X-ray sensor is completed, so that the operation takes a long time and the operator has to carry the calibration filter.

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

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems of the prior art, and it is an object of the present invention to precisely adjust the plane inclination of the slit plate of the collimator, the plane position, and the plane inclination of the shield plate, , And children, the X-ray irradiation range of the collimator is first set to the reference range, and the X-ray irradiation range of the collimator is finely adjusted according to the Frankfurt horizontal line of the examinee who is actually inspected, And the calibration filter required for the calibration of the device can be driven to slide upward or downward, so that the calibration of the device can be easily performed.

According to an aspect of the present invention, there is provided an X-ray imaging apparatus including an X-ray source for irradiating an X-ray, a collimator for adjusting an irradiation range of X-rays irradiated from the X-ray source, The collimator including a slit plate having a slit for limiting the irradiation range of X-rays irradiated from the X-ray source, and a slit plate A slit portion including an adjustment unit for adjusting a plane inclination and a plane position; And a shielding plate that shields one side of the slit, wherein the shielding plate is provided on a front side or a rear side of the collimator, and the filter moving means moves the X- And a calibration filter which is selectively movable to an operating position located on the light irradiation path of the irradiated X-ray or an inoperative position arranged to deviate from the X-ray source in the light irradiation path of the X-ray irradiated to the X-ray sensor do.

Preferably, the filter moving means includes: a filter moving block on which the calibration filter is mounted; A filter moving screw into which the filter moving block is inserted; And a filter moving means for sliding the filter moving block according to normal and reverse rotation of the filter for moving the filter.

Preferably, the filter moving block includes: a filter guide moving linear guide rail provided on a base plate on which the filter moving means is installed; And a filter moving linear guide provided at a corresponding portion of the filter moving block corresponding to the linear guide rail.

Preferably, the base plate is provided with a calibration through-hole through which the X-ray light irradiated from the X-ray source to the X-ray sensor passes, and the operating position is defined by the X- And the calibration filter is entirely overlapped with the calibration filter, and the non-operation position may be a position where the calibration through-hole and the calibration filter do not completely overlap with each other with respect to the optical path of the X-ray.

Preferably, the slit plate adjusting unit includes: an alignment plate on which the slit plate is mounted; A moving block assembled with one side of the alignment plate; A moving screw into which the moving block is inserted; And driving means for vertically sliding the moving block as the moving screw rotates forward and backward.

Preferably, the slit portion shaft hole is formed in one of the slit plate and the alignment plate; A slit portion axial projection formed on the other of the slit plate and the alignment plate and axially inserted into the slit portion shaft hole; And a slit portion inclination adjusting means for adjusting the inclination of the slit plate with respect to the slit portion protruding portion, the slit portion inclination adjusting means being provided on a fixing block fixed on upper and lower portions of the alignment plate.

A plate-like sliding guide formed on one side of the aligning plate for engaging with the moving block and having a plurality of engaging holes; A guide groove formed on one side of the moving block to receive the sliding guide and having a plurality of engaging slots formed along the sliding direction of the aligning plate; And engaging means for passing through the engaging hole and the engaging slot, wherein one side of the aligning plate can be assembled so as to be slidable or fixed to the moving block in the left-right direction.

Preferably, the sliding guide of the alignment plate is provided with a protruding block to which the left and right adjusting means are fixed, and the moving block is provided with a cutout groove into which the protruding block is inserted so as to be slidable, .

A horizontal line laser for irradiating a laser beam in the form of a horizontal line toward the head of the examinee for horizontal alignment of the examinee's head; And a laser position adjusting means for adjusting the vertical position of the horizontal line laser by vertically sliding the horizontal line laser, wherein the laser position adjusting means adjusts the position of the horizontal line of the examinee's head The vertical position of the slit plate with respect to the shield plate is adjusted on the basis of the vertical slider adjustment amount of the horizontal line laser adjusted so that the horizontal line type laser beam and the Frankfort Horizontal Line are aligned with each other, .

Preferably, the shield includes: a linear guide rail provided on a base plate on which the slit portion and the shielding portion are provided; And a shield block having a linear guide fastened to the linear guide rail and movable along a longitudinal direction of the linear guide rail, the shield block having the shield plate on one side thereof.

Preferably, a shielding shaft hole formed in one of the shielding plate and the shielding block; Shielding shafts formed on the other one of the shielding plate and the shielding block and axially inserted into the shielding shafts; And shielding slope adjusting means provided at a corresponding portion of the shielding block corresponding to upper and lower portions of the shielding plate to adjust a plane inclination of the shielding plate with respect to the protrusion of the vehicle stem.

Preferably, the reference hole is formed on one of the corresponding surface of the shielding block facing the base plate and the corresponding surface of the base plate corresponding to one point on the movement path of the shielding block. And an elastic pressing means formed on the other of the corresponding surface of the shielding block facing the base plate and the corresponding surface of the base plate corresponding to one point on the movement path of the shielding block and resiliently press-fitting into the reference hole; The blocking block may be set to a photographing position and fixed as the elastic pressing means is resiliently press-fitted into the reference hole.

Preferably, the adjustment unit includes a moving block that is coupled with the slit plate and is movable up and down by a driving unit, and the shield is a shielding plate that is coupled to the shield plate, Wherein the shield block is moved to a calibration position of the shield block as the moving block moves downwardly by pushing and moving the upper portion of the shield block by the drive motor, As the moving block moves upward again, the moving block can move to the calibration position of the moving block.

Preferably, a stopper may be provided to allow at least one of the moving block and the shield block to stop at the calibration position.

The present invention as described above is advantageous in that the plane tilt of the slit plate of the collimator, the plane position, and the plane slope of the shield plate can be precisely adjusted regardless of the experience and skill of the operator.

In addition, since the calibration filter required for the calibration of the device can be driven to slide upward or downward, the device can be easily calibrated.

In addition, the X-ray irradiation range of the collimator is first set to the reference irradiation range according to the height, adult, child, etc., and the X-ray irradiation range of the collimator is finely adjusted according to the Frankfurt horizontal line of the actual examiner, The radiation dose can be adjusted to the recipient and the dose can be minimized.

Further, since the slit plate and the shield plate can be moved to the respective calibration positions by driving the moving block integrally assembled with the slit plate to be slid up and down, the calibration can be easily performed.

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 an enlarged perspective view of a part of an X-ray imaging apparatus according to an embodiment of the present invention.
6 is an exploded perspective view showing an enlarged view of another part of an X-ray imaging apparatus according to an embodiment of the present invention.
7 is an exploded perspective view showing an enlarged portion of another part of an X-ray imaging apparatus according to an embodiment of the present invention.
8 is a view for explaining the operation of the X-ray imaging apparatus according to the embodiment of the present invention.
FIG. 9 is an exploded perspective view showing an enlarged portion of another part of an X-ray imaging apparatus according to an embodiment of the present invention.
10 is a view showing a Frankfurt horizontal line.
11 to 15 are front views illustrating a calibration process of the X-ray imaging apparatus according to an embodiment of the present invention.
16 and 17 are front views illustrating the operation of a calibration filter of an X-ray imaging apparatus according to an embodiment of the present invention.

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.

3, the X-ray source 100, the collimator 200, the X-ray sensor 300, and the horizontal line laser 400, 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 the 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 horizontal line laser 400 is adjusted to coincide with 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. 10, the Frankfurt horizontal line refers to a horizontal line connecting the vicinity of the ear canal and passing through the cheekbones.

The collimator 200 constituting the X-ray imaging apparatus according to an embodiment of the present invention includes a slit portion 210 and a shielding portion 260, as shown in FIGS.

First, the slit portion 210 will be described.

4 and 5, the slit portion 210 includes a slit plate 211 having a slit S for limiting an irradiation range of X-rays irradiated from the X-ray source 100, And an adjustment unit 213 for adjusting the plane inclination and the plane position of the slit plate 211. [

5, the slit plate 211 is a plate-shaped lead member having a slit S extending in the vertical direction to limit an irradiation range of X-rays irradiated from the X-ray source 100, At one side of the slit plate 211, there is formed a slit portion shaft hole h1 passing through the front and rear surfaces.

The adjusting unit 213 includes an aligning plate 213a, a pair of slit adjusting bolts 213b, and a moving block 213c.

A slit part shaft protrusion e1 coupled to the slit part shaft hole h1 so as to be pivotable is formed on the front surface of the alignment plate 213a and the slit part shaft hole h1 is formed in the slit part axial protrusion e1, The slit plate 211 is mounted on the front surface thereof.

Therefore, the slit plate 211 can be rotated in a state where the other side portion is rotatable with respect to the slit portion axial protrusion e1.

A through hole (not shown) is formed in the alignment plate 213a in a shape corresponding to the through hole BP-h of the base plate BP so as to pass through the slit s of the slit plate 211 An X-ray can reach the X-ray sensor 300.

The pair of slit portion tilt adjusting bolts 213b are located at the upper and lower ends of the other side of the slit plate 211 and are fixed to a fixing block 213a-1 fixed on the front surface of the aligning plate 213a And the upper and lower ends of the other side of the slit plate 211 are pressed or released, respectively, as they are screwed and rotated forward or reverse.

For example, when the upper slit portion adjusting bolt 213b is rotated forward and the lower slit portion adjusting bolt 213b is reversed, the other side of the slit plate 211 is rotated downward And the upper slit portion tilt adjusting bolt 213b is reversely rotated and the lower slit portion tilt adjusting bolt 213b is rotated forward, the other side of the slit plate 211 is rotated upward have.

As described above, the plane inclination of the slit plate 211 can be adjusted by the pair of slit portion inclination adjusting bolts 213b. When the adjustment of the plane inclination of the slit plate 211 is completed, The slit plate 211 is fixedly coupled to the alignment plate 213a through rotation of the slit plate 211 to prevent rotation of the slit plate 211, thereby completing the setting.

The moving block 213c is a block for adjusting the vertical position of the slit plate 211 by moving the aligning plate 213a in the up and down directions, And is assembled to one side of the moving block 213c.

At this time, the alignment plate 213a is coupled to the moving block 213c so as to be slidable or fixed to the moving block 213c in a lateral direction so that the alignment plate 213a can be horizontally adjusted with respect to the moving block 213c do.

6, a plate-shaped sliding guide 213a-2 having a plurality of engaging holes h2 for engaging with the moving block 213c is formed at one side of the aligning plate 213a, A guide groove 213c-1 is formed in the moving block 213c and accommodates the sliding guide 213a-2 and has a plurality of engaging elongated holes h3 formed along the sliding direction of the aligning plate 213a. And the right and left slides of the alignment plate 213a are guided by coupling bolts (not shown) which are coupling means passing through the coupling holes h2 and the coupling slots h3, So that the position can be limited.

A protruding block 213a-3 is formed on one side of the sliding guide 213a-2 of the aligning plate 213a. The protruding block 213a-3 is fixed to the left and right adjusting bolts 213d. A cutout groove 213c-2 is formed in the block 213c in which the protruding block 213a-3 is inserted and slidable, and a nut hole 213c-3, which is a fastening portion to be screwed with the left and right adjusting bolt 213d, do.

Accordingly, as the left and right adjusting bolts 213d are rotated forward or reverse, the aligning plate 213a is moved to the left or right with respect to the moving block 213c, and the aligning plate 213a is moved The slit plate 211 can be moved to the left or right.

The left and right sliding movement of the alignment plate 213a with respect to the moving block 213c allows adjustment of the horizontal position of the slit plate 211 on the plane.

The moving block 213c is axially inserted into a moving screw SC that receives a rotational force of the driving motor M and is vertically slid along the moving screw SC by the rotation of the moving screw SC And the vertical position of the slit plate 211 is adjusted in accordance with the movement or fixing.

Specifically, the driving motor M is a driving source for rotating the moving screw SC, and the moving screw SC is a component that rotates by receiving the rotational force of the driving motor M, (213c) is a component that is inserted into the movable screw (SC) and is slid up and down along the movable screw (SC) by the rotation of the movable screw (SC).

For example, when the drive motor M is rotated in the forward direction, the moving screw SC rotates in the forward direction and the moving block 213c moves downward as the moving screw SC rotates in the normal direction do. During the reverse rotation of the driving motor M, the movable screw SC is rotated in the reverse direction, and the moving block 213c moves upward as the moving screw SC rotates in the reverse direction .

Next, the shielding portion 260 will be described.

The shield 260 includes a shield plate 261 and a shield block 263.

The shield plate 261 is a plate-like lead member for shielding one side section of the slit S of the slit plate 211. As shown in FIG. 7, the shield plate 261 has front and rear surfaces A shielding shaft hole h4 is formed.

The shielding plate 261 adjusts the size of the slit S formed in the slit plate 211 while the slit plate 211 of the slit portion 210 moves up and down.

The shielding block 263 is a block that can be coupled with one side of the shielding plate 261 to be movable up and down.

Specifically, the shielding block 263 includes a shielding portion shaft protrusion e2 coupled to the shielding portion shaft hole h4 so as to be rotatable about an axis, and a shielding portion And a shield tilt adjusting bolt 263a which is a shield tilt adjusting means for adjusting the plane tilt of the shield plate 261 with respect to the shield shank e2.

The pair of shield tilt adjusting bolts 263a are rotatable so as to be positioned and fixed to the upper and lower portions of the shield block 263 and are fixed to one side of the shield plate 261 .

For example, when the shield tilt adjusting bolt 263a on the upper side is rotated forward and the lower shield tilt adjusting bolt 263a is reversed, one side of the shield plate 261 is rotated When the shield tilt adjusting bolt 263a on the upper side reversely rotates and the lower shield tilt adjusting bolt 263a is rotated forward, one side of the shield plate 261 can be rotated upward have.

The shield block 263 is provided with an LM guide LM which is a linear guide and is configured to be slidable upward and downward along the LM guide rail LM-L, which is a linear guide rail provided on the base plate BP do.

Meanwhile, the X-ray imaging apparatus according to an embodiment of the present invention may be configured such that a Frankle horizontal line (FHL), which is a predetermined reference horizontal line for horizontal alignment of the examinee's head, The X-ray irradiation range of the collimator 200 is adjusted based on the vertical position adjustment amount of the horizontal line laser 400.

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 500 And the vertical position is adjusted.

The laser position adjusting means 500 adjusts the laser position of the laser beam irradiated from the horizontal line laser 400 in accordance with the Frankfurt horizontal line FHL, which is a predetermined reference horizontal line for horizontal alignment of the subject's head And the vertical position of the horizontal line laser 400 is adjusted.

Specifically, the laser position adjusting unit 500 includes a laser driving adjusting motor 511, a laser adjusting moving screw 513, and a laser adjusting moving block 515.

The laser adjusting movable screw 511 is a driving source for rotating the laser adjusting movable screw 513 and the laser adjusting movable screw 513 is driven by the rotational force of the laser adjusting driving motor 511 through a timing belt 512 And the laser control moving block 515 is inserted into the laser control moving screw 513 and inserted into the laser control moving screw 513 by rotation of the laser control moving screw 513. [ As shown in Fig.

For example, the laser control moving screw 513 rotates in the normal direction during the regular rotation of the laser control driving motor 511, and as the laser control moving screw 513 rotates in the forward direction, (515) moves downward. The movable adjusting screw 513 rotates in the reverse direction during the reverse rotation of the laser adjusting driving motor 511 and the laser adjusting movable block 513 rotates in the reverse direction, 515 are moved upward.

The horizontal line laser 400 is provided at one side of the laser control moving block 515 and slides together with the laser control moving block 515 when the laser control moving block 515 slides up and down.

A guider (not shown) slidable along a vertical slit h 'is provided on the front side of the laser control moving block 515 and the laser control moving block 515 can be stably moved up and down by the guider .

As described above, the vertical horizontal line (FHL), which is a predetermined reference horizontal line for horizontally aligning the examinee's head, and the vertical line laser (400) The vertical position of the slit plate 211 is adjusted so that the X-ray irradiation range of the collimator 200 can be adjusted based on the adjustment amount, which can be understood through the following description of operation, Specifically,

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 height of 170 cm, the height of the gantry 14 is adjusted to a height corresponding to the examinee's elongation (170 cm), and as shown in FIG. 8 (a) The slit plate 211 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 14 is adjusted and the X-ray irradiation range of the collimator 200 is set to the reference irradiation range, the Frankfurt horizontal line FHL of the examinee's head and the horizontal line The operator adjusts the vertical position of the horizontal line laser 400 such that the horizontal line laser beam irradiated by the laser 400 is aligned.

Specifically, the operator controls the rotation direction and the rotation amount of the laser control driving motor 511 by operating a touch LCD ('19' in FIG. 1) or another control means provided on one side of the apparatus, The adjusting movable screw 513 and the laser-adjusting moving block 515 interlock with each other so that 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 movable block SC and the moving block 213c are interlocked with each other in accordance with the vertical position adjustment amount of the moving block 213. At this time, And is adjusted to be the same amount as the up-and-down position adjustment amount of the upper /

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.

8B, when the horizontal line laser 400 moves downward by 3 mm, the moving block 213c also moves downward by 3 mm, and accordingly, The lower side of the slit S of the slit plate 211 is further closed by 3 mm by the plate 261 so that the size of the slit S is reduced.

16 to 17, the X-ray imaging apparatus according to the embodiment of the present invention includes a filter F for calibration which can be selectively moved to the operating position and the inoperative position by the filter moving means 700, May be provided.

The calibration filter F may be provided on the front side or the rear side of the collimator 200 and may be disposed on the front side of the shield plate 261, May be positioned between the alignment plate 213a and the base plate BP between the base plates BP and may be spaced apart from the rear side of the base plate BP. The case where the calibration filter F is positioned between the alignment plate 213a and the base plate BP will be described.

The calibration filter F is disposed at an operating position located on the light irradiation path of X-rays irradiated from the X-ray source 100 to the X-ray sensor 300 by the filter moving means 700, (Not shown) disposed on the X-ray sensor 100 so as to deviate from the X-ray irradiation path of the X-ray irradiated to the X-ray sensor 300.

Specifically, the operating position is a position where the calibration through-hole (BP-h) and the calibration filter (F) are entirely overlapped with each other with reference to the optical path of the X-ray as shown in Fig. 17, As shown in Fig. 16, the inoperative position is a position where the calibration through-hole (BP-h) and the calibration filter (F) are not overlapped with each other based on the X-ray optical path.

The filter moving unit 700 includes a filter moving block 710 to which the calibration filter F is mounted, a filter moving screw 720 into which the filter moving block 710 is inserted, and the filter moving screw 720 And a filter moving means 730 for sliding the filter moving block 710 according to normal and reverse rotation of the filter moving block 710.

Specifically, the filter movement driving means 730 is a driving source for rotating the filter movement screw 720, and the filter movement screw 720 is rotated by receiving the rotational force of the filter movement driving means 730 And the filter moving block 710 is inserted into the filter moving screw 720 so as to be slid up and down along the filter moving screw 720 by the rotation of the filter moving screw 720.

The filter moving screw 720 rotates in the forward direction and the filter moving block 710 rotates in the forward direction when the filter moving screw 720 rotates in the normal direction. As shown in Fig. 17, the calibration filter F is located at the operating position.

When the filter moving screw 720 rotates in the reverse direction, the filter moving block 710 rotates in the reverse direction when the filter moving driving unit 730 rotates in the reverse direction. As the filter moving screw 720 rotates in the reverse direction, As shown in Fig. 16, the calibration filter F is moved to the inoperative position.

The linear movement of the filter moving block 710 can be stably guided through the linear guide rail 740 for moving the filter and the linear guide 750 for moving the filter. And the filter moving linear guide 750 may be provided on the base plate BP on which the moving means 700 is installed and the filter moving linear guide 750 may be mounted on the filter moving block 710 corresponding to the filter moving linear guide rail 740 .

Hereinafter, the calibration process of the X-ray imaging apparatus configured as described above will be described.

11, in a state in which the X-ray imaging apparatus is in the photographing mode, the driving motor M is driven to slide the moving block 213c downward, as shown in FIG.

At this time, as the lower end of the moving block 213c sliding downward pushes the upper end of the shielding block 263 downward, the shielding block 263 is driven downward in conjunction with the moving force of the moving block, And moves to the calibration position as it moves.

On the other hand, the shielding block 263 is limited in its downward sliding position by the lower stopper S1, which limits the downward position, and the position limited by the downward stopper is the calibration position of the shielding block 263. [

The lower stopper may be a lower end bearing supporting block for supporting a lower end of the moving screw SC to support a moving screw SC rotationally driven by the driving motor M, A step portion 263 'abutting the bearing support block may be formed.

Next, as shown in FIG. 13, the moving block 213c, which moves the shielding block 263 to the calibration position, is slid upward by the drive motor M to move to the calibration position.

At this time, the upward sliding position of the moving block 213c is restricted by the upper stopper S2, which limits the upper position, and the position limited by the upper stopper is the calibration position of the moving block 213c.

The upper stopper may be an upper bearing supporting block for supporting the upper end of the moving screw SC so as to support a moving screw SC rotationally driven by the driving motor M.

In this state, the filter moving screw 720 rotates in the normal direction as the filter moving drive means 730 rotates in the normal direction, and the filter moving block 720 rotates in the normal direction as the filter moving screw 720 rotates in the forward direction. To move downward, thereby positioning the calibration filter F in an operating position in which it overlaps with the calibration through-hole BP-h.

As described above, as the shielding block 263 and the moving block 213c move to the respective calibration positions and the calibration filter F is positioned at the operating position overlapping with the calibration through holes BP-h, It is possible to perform calibration of the device (X-ray sensor 300) by irradiating X-rays toward the through-hole BP-h.

14, when the calibration of the device (X-ray sensor 300) is completed, the filter moving drive means 730 is rotated in the reverse direction so that the filter moving screw 720 is rotated in the reverse direction And the filter moving block 710 is moved upward as the filter moving screw 720 rotates in the reverse direction so that the calibration filter F is inserted into the calibration through holes BP- Non-operating position that does not overlap.

Next, the operator pushes the lower end of the shielding block 263 up using the tool 600 and returns to the position corresponding to the photographing mode of the X-ray photographing apparatus.

9, a reference hole BP-h1 is formed in the base plate BP at one point on the movement path X of the shielding block 263, and the base plate BP, A ball plunger P which is a resilient press-fitting means elastically inserted into the reference hole BP-h1 is provided on the corresponding surface of the shielding block 263 facing the shielding block 263, It can be restored to a position corresponding to the photographing position of the shielding block 263, that is, the photographing mode of the X-ray photographing apparatus, as it is inserted into the reference hole BP-h1.

Next, as shown in FIG. 15, the moving block 213c slides downward and returns to the position corresponding to the photographing mode of the X-ray imaging apparatus. At this time, the moving block 213c slides downward Can be set based on the photosensor (PS) provided on the base plate (BP).

That is, the position where the moving block 213c is sensed by the photosensor PS is set as a zero point, and the downward movement amount of the moving block 213c is calculated from the set zero point, The position corresponding to the photographing mode of the photographing apparatus can be determined.

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
300: X-ray sensor
400: horizontal line laser
500: laser position adjusting means
600: Tools
700: filter moving means
F: Filter for calibration

Claims (14)

An X-ray source for irradiating X-rays, a collimator for adjusting an irradiation range of X-rays irradiated from the X-ray source, and an X-ray sensor for irradiating through the collimator and detecting X- As a ray imaging apparatus,
The collimator includes a slit plate having a slit for limiting an irradiation range of X-rays irradiated from the X-ray source, a slit unit including a control unit for adjusting a plane inclination and a plane position of the slit plate; And a shielding plate covering the one side of the slit,
And an operation position which is provided on the front side or the rear side of the collimator and which is disposed on the light irradiation path of the X-ray irradiated from the X-ray source to the X-ray source by the filter moving means, And a calibration filter that is selectively movable to an inoperative position that is disposed to deviate from the light irradiation path of the X-rays irradiated to the X-ray irradiation unit. The method according to claim 1,
Wherein the filter moving means comprises:
A filter moving block to which the calibration filter is mounted;
A filter moving screw into which the filter moving block is inserted; And
And a filter moving means for sliding the filter moving block by rotating the filter moving screw in the forward and reverse directions. 3. The method of claim 2,
The filter moving block includes:
A filter guide moving linear guide rail provided on a base plate on which the filter moving means is installed; And a filter moving linear guide provided at a corresponding portion of the filter moving block corresponding to the linear guide rail. The method of claim 3,
In the base plate,
A calibration through hole is formed in the X-ray source, through which light of the X-ray emitted from the X-ray sensor passes,
Wherein the operation position is a position where the calibration through hole and the calibration filter are entirely overlapped with each other with respect to the optical path of the X-ray, and the inoperative position is a position where the calibration through- Is positioned so as not to be overlapped on the whole. The method according to claim 1,
The slit plate adjusting unit includes:
An alignment plate on which the slit plate is mounted;
A moving block assembled with one side of the alignment plate;
A moving screw into which the moving block is inserted; And
And driving means for vertically sliding the moving block as the moving screw rotates forward and backward. 6. The method of claim 5,
A slit portion shaft hole formed in one of the slit plate and the alignment plate;
A slit portion axial projection formed on the other of the slit plate and the alignment plate and axially inserted into the slit portion shaft hole; And
And a slit portion inclination adjusting means provided on a fixed block fixed on upper and lower portions of the alignment plate for adjusting a plane inclination of the slit plate with respect to the slit portion exit protrusions. Device. The method according to claim 6,
A plate-like sliding guide formed on one side of the aligning plate for engaging with the moving block and having a plurality of engaging holes;
A guide groove formed on one side of the moving block to receive the sliding guide and having a plurality of engaging slots formed along the sliding direction of the aligning plate; And
Wherein the alignment plate is assembled so that one side of the alignment plate can be slidably moved or fixed to the moving block in a lateral direction. 8. The method of claim 7,
The sliding block includes a slidable guide having a protruding block to which the right and left adjusting means are fixed, and the moving block is provided with a slit groove through which the protruding block is inserted and slidable, and a fastening portion to which the right and left adjusting means are fastened Ray imaging apparatus. The method according to claim 1,
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; And
And a laser position adjusting means for adjusting the vertical position of the horizontal line laser by vertically sliding the horizontal line laser,
Wherein the vertical position of the laser beam is adjusted by the laser position adjusting means such that the Frankfort Horizontal Line of the examinee's head is aligned with the laser beam of the horizontal line type, And the X-ray irradiation range is adjusted by adjusting the vertical position of the slit plate. The method according to claim 1,
The shielding portion
A linear guide rail provided on the base plate on which the slit portion and the shielding portion are provided; And
And a shield block having a linear guide fastened to the linear guide rail and movable along the longitudinal direction of the linear guide rail and having the shield plate on one side thereof. 11. The method of claim 10,
A shield shaft hole formed in one of the shield plate and the shield block;
Shielding shafts formed on the other one of the shielding plate and the shielding block and axially inserted into the shielding shafts; And
And shielding portion inclination adjusting means provided at a corresponding portion of the shielding block corresponding to upper and lower portions of the shielding plate to adjust a plane inclination of the shielding plate with respect to the protrusion of the vehicle body axis. Shooting device. 12. The method of claim 11,
A reference hole formed in one of a corresponding surface of the shielding block facing the base plate and a corresponding surface of the base plate corresponding to one point on the movement path of the shielding block; And
And an elastic pressing means formed on the other of the corresponding surface of the shielding block facing the base plate and the corresponding surface of the base plate corresponding to one point on the movement path of the shielding block and resiliently press-fitting into the reference hole ≪ / RTI >
Wherein the shielding block is set and fixed to a photographing position as the elastic pressing means is resiliently press-fitted into the reference hole. The method according to claim 1,
Wherein the adjusting unit includes a moving block which is coupled with the slit plate and is movable up and down by a driving means,
The shielding block includes a shielding block coupled to the shielding plate and driven to move in conjunction with a moving force of the moving block,
The blocking block is moved to the calibration position of the blocking block as the moving block is moved downward by the driving motor to push and move the upper portion of the blocking block,
And the moving block moves to the calibration position of the moving block as the moving block moves upward again by the driving motor. 14. The method of claim 13,
And a stopper for allowing at least one of the moving block and the shield block to stop at a corresponding calibration position.

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