KR20100055972A - Dual source x-ray ct equipment - Google Patents

Abstract

PURPOSE: A dual source X-rays CT camera is provided to prevent an expose of an unnecessary site by taking a photograph of a part by using a micro CT not the general CT. CONSTITUTION: A first radiation light source unit(110) and a second radiation light source unit(120) generates the X-rays. A X-rays sensor unit(150) detects the X-rays generated in the first radiation light source unit or the second radiation light source unit. A rotating arm(130) supports the first radiation light source unit, the second radiation light source unit and a X-rays sensor unit. A radiation light source part driving tool(142) arranges either the first radiation light source unit or the second radiation light source unit in order to face with the X-rays sensor unit. A respective included source has a different focal spot size on the first radiation light source unit and the second radiation light source unit.

Description

Dual source X-ray CT equipment {Dual source X-ray CT equipment}

The present invention relates to a dual source X-ray CT imaging apparatus, and more particularly, to a dual X-ray CT imaging apparatus having two X-ray light source units forming spot sizes of different focal points.

In general, in the field of medical care, an X-ray photographing apparatus includes an X-ray light source unit and an X-ray sensor unit, and the X-ray light source unit transmits a certain amount of X-rays to be photographed, and the X-ray sensor measures the amount of X-rays transmitted. It is a photographing device that records measured data in a memory, obtains an X-ray absorption rate of each point of a body photographing portion by a computer, and reconstructs it into an image.

Meanwhile, in the dental care field, an X-ray computerized tomography (CT) imaging apparatus is an imaging apparatus for acquiring a tomography image, and the X-ray sensor unit includes a surface sensor to acquire a three-dimensional transmission image in a one shot manner.

Such dental X-ray CT imaging generally provides an image formed of pixels having a size of 200 μm or more, and when observing a specific portion of the image, a method of digitally enlarging the image of the region is used. However, even if the image is enlarged as described above, the resolution is not high, so there is a limit to precise observation. In this case, apart from the X-ray CT imaging apparatus, there is a method of photographing using a CT imaging apparatus using an X-ray source having a very small focal size.

However, when the general dental X-ray CT imaging device and the small-focus X-ray CT imaging device are alternately used as described above, the cost of purchasing each device becomes large, occupies a lot of space, and the inconvenience of each imaging and the patient. Various disadvantages arise, such as increased movement, and time taken for shooting.

Accordingly, an object of the present invention is to solve the problems of the prior art and the technical problem that has been requested from the past.

That is, an object of the present invention is to provide a dual-source X-ray CT imaging apparatus capable of capturing a general X-ray CT imaging image and a high-resolution image of a local region that cannot be obtained by the general X-ray CT imaging apparatus with one X-ray CT imaging apparatus. It is.

It is also an object of the present invention to provide a dual source X-ray CT imaging apparatus that can be easily performed by performing a simple X-ray CT imaging and high-resolution precision X-ray CT imaging as a simple structure.

In addition, another object of the present invention is to provide a dual source X-ray CT imaging apparatus that can reduce the X-ray exposure of the patient, and improve the processing speed of the image.

A dual source X-ray CT imaging apparatus according to an exemplary embodiment of the present disclosure may face the first X-ray light source unit and the second X-ray light source unit, the first X-ray light source unit, or the second X-ray light source unit to generate X-rays. And an X-ray sensor unit for detecting X-rays generated by the first X-ray light source unit or the second X-ray light source unit, a rotation arm supporting the first X-ray light source unit, the second X-ray light source unit, and the X-ray sensor unit, and the first X-ray light source unit and the second X-ray light source unit. And an X-ray light source unit driving means for causing any one of the X-ray light source units to face the X-ray sensor unit, and sources provided in the first X-ray light source unit and the second X-ray light source unit respectively have different focal spot sizes. size).

In an exemplary embodiment, the first X-ray light source unit and the second X-ray light source unit are supported on one side of the rotating arm at a predetermined angle α with respect to one axis, and the X-ray light source driving unit is connected to the rotating arm. Is provided has a structure in which a portion of the rotary arm can rotate at a predetermined angle (α) relative to the axis. In an exemplary embodiment, the first X-ray light source unit and the second X-ray light source unit may be positioned in parallel in the vertical or horizontal direction, and the X-ray light source unit driving unit may shift the first X-ray light source unit and the second X-ray light source unit in the vertical or horizontal direction. It is made of a structure that can be.

In addition, the dual source X-ray CT imaging apparatus according to an embodiment of the present invention for achieving the above object, the first X-ray light source unit and the second X-ray light source unit for generating X-rays having a spot size of different focus, the first X-ray An X-ray sensor unit facing the light source unit or the second X-ray light source unit and detecting the X-rays generated by the first X-ray light source unit or the second X-ray light source unit, the rotation arm supporting the first X-ray light source unit, the second X-ray light source unit, and the X-ray sensor unit; And the first X-ray light source unit and the second X-ray light source unit each having a fastening member, and having a fastening unit to which any one of the first X-ray light source unit and the second X-ray light source unit is fastened.

In example embodiments, the first X-ray light source unit may include a CT source, and the second X-ray light source unit may include a micro CT source.

In a preferred embodiment, the focal spot size of the first light source portion is 0.3mm to 1mm, the focal spot size of the second light source portion may be 0.02 mm to 0.1 mm.

In a preferred embodiment, the dual source X-ray CT imaging apparatus of the present invention is provided at a predetermined position of the rotary arm, and guides the X-rays generated by the first X-ray light source unit or the second X-ray light source unit and detected by the X-ray sensor unit. It is made of a structure that further comprises a collimator.

In a preferred embodiment, between the rotating arm and the first X-ray light source unit or the second X-ray light source unit is provided with a light source unit separation distance adjusting means for adjusting the separation distance of the first X-ray light source unit or the second X-ray light source unit and the X-ray sensor unit. Made of structure.

In a preferred embodiment, the rotational arm and the X-ray sensor unit has a structure having an X-ray sensor unit separation distance adjusting means for adjusting the separation distance between the first X-ray light source unit or the second X-ray light source unit and the X-ray sensor unit.

The dual source X-ray CT imaging apparatus of the present invention can perform high resolution micro X-ray CT imaging of a localized region as well as general X-ray CT imaging, and thus, there is an effect of obtaining two types of X-ray CT images with one device.

In addition, the dual source X-ray CT imaging apparatus of the present invention has an effect that can be easily performed by performing a simple X-ray CT imaging and high resolution micro X-ray CT imaging as a simple structure.

In addition, the dual source X-ray CT imaging apparatus of the present invention can be photographed using a micro CT instead of a normal CT when only a local site is required to be photographed, thereby preventing exposure of unnecessary portions to X-rays to reduce the X-ray exposure of the patient. It can reduce and improve the processing speed because it does not process the X-ray image of the unnecessary area.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings, but the present invention is not limited by the scope of the present invention. In addition, in the drawings, the length, thickness, etc. of the layers and regions may be exaggerated for the convenience of description. Like numbers refer to like elements throughout.

1 is a perspective view of a dual source X-ray CT imaging apparatus according to a first embodiment of the present invention.

Referring to FIG. 1, the dual source X-ray CT imaging apparatus 100 may include a first X-ray light source unit 110 and a second X-ray light source unit 120, the first X-ray light source unit 110, or a second X-ray light source unit that generates X-rays. The X-ray sensor unit 150, the first X-ray light source unit 110, and the second X-ray light source unit 120, which face the 120, detect X-rays generated by the first X-ray light source unit 110 or the second X-ray light source unit 120. And an X-ray light source unit driving means for supporting the X-ray sensor unit 150 and the rotating arm 130 supporting the X-ray sensor unit and any one of the first X-ray light source unit 110 and the second X-ray light source unit 120. 142 is provided. In this case, each of the sources provided in the first X-ray light source unit and the second X-ray light source unit may have a different focal spot size.

The first X-ray light source unit 110 and the second X-ray light source unit 120 are respectively supported on one side of the rotating arm 130 at a predetermined angle α with respect to one axis, and the X-ray light source unit driving means ( 142 is provided on the rotary arm 130 has a structure in which a portion 133 of the rotary arm 130 can rotate at a predetermined angle α with respect to the axis.

The first X-ray light source unit 110 includes a source used in a general X-ray CT imaging apparatus, and provides a captured image formed of about 200 to 300 μm of pixels. In this case, the source provided in the first X-ray light source unit 110 has a focal spot size having a width of 0.3 mm to 1 mm. In addition, the second X-ray light source unit 120 includes a source forming a spot size of a small focal spot used for micro X-ray CT imaging, and provides a captured image formed of pixels of approximately 50 to 100 μm . At this time, the source provided in the second X-ray light source unit 120 has a focal spot size of 0.02 mm to 0.1 mm.

In this case, the second X-ray light source unit 120 may be used when a precise image of a local region is required. The first X-ray light source unit 110 is used to perform a CT scan of a wide area such as the entire oral cavity, and the second X-ray light source unit 120 may be used to obtain a precise image of a localized area. That is, after CT imaging using the first X-ray light source unit 110, the CT is rotated by a predetermined angle α about an axis, and then micro CT imaging is performed using the second X-ray light source unit 120. By doing so, X-rays can be prevented from being exposed to areas where imaging is not necessary, and local portions can obtain high resolution images.

The X-ray sensor unit 150 serves to detect X-rays generated by the first X-ray light source unit 110 or the second X-ray light source unit 120, and converts the detected X-rays into an electrical signal.

The rotation arm 130 supports the first X-ray light source unit 110, the second X-ray light source unit 120, and the X-ray sensor unit 150.

The rotary arm rotation driving means 140 is provided at a predetermined position of the rotary arm 130 to serve to rotate the rotary arm 130 so as to rotate the X-ray light source units 110 and 120 and the X-ray sensor unit 150. Rotate to face each other.

That is, the rotary arm rotation driving means 140 is the X-ray light source unit 110, 120 and X-ray sensor when the patient or the object is located between the X-ray light source unit (110, 120) and the X-ray sensor unit 150 When the unit 150 forms a certain trajectory (circular or elliptical), the unit 150 rotates to perform X-ray imaging of the patient or object at various angles. In this case, the rotary arm rotation driving means 140 may be provided with a motor or gears therein to mechanically rotate the rotary arm 130.

The rotary arm lifting drive means 145 serves to raise or lower the rotary arm 130 in the vertical direction and is provided to fit the height or height of the patient or object to be photographed. In this case, the rotary arm lifting drive means 145 may be provided with a motor or gear, etc. to mechanically raise or lower the rotary arm 130.

In this case, in FIG. 1, the rotary arm rotary driving unit 140 is connected to the rotary arm 130, and the rotary arm lifting driving unit 145 is connected to the rotary arm rotary driving unit 140. Although shown, the reverse may be provided.

FIG. 2 is a perspective view of the dual source X-ray CT imaging apparatus according to the second embodiment of the present invention, and FIG. 3 is a side view of FIG. 2.

Referring to these drawings, the dual source X-ray CT imaging apparatus 102 according to the second embodiment of the present invention includes an X-ray imaging unit 111 including a first X-ray light source unit 112 and a second X-ray light source unit 122, It consists of a structure including the X-ray sensor unit 150 and the rotary arm 132.

The X-ray photographing unit 111 has an 'L' shape, and is provided with a first X-ray light source 112 and a second X-ray light source 122 that generate X-rays at both ends thereof.

X-ray CT imaging by the first X-ray light source unit 112 and X-ray CT imaging using the second X-ray light source unit 122 may be performed by using the L-shaped X-ray imaging unit 111 based on the rotation axis 114. It is achieved by rotating at an angle of 90 degrees so that one of the first X-ray light source unit 112 and the second X-ray light source unit 122 faces the X-ray sensor unit 150.

Except for the above, the same as the dual source X-ray CT imaging apparatus according to the first embodiment of the present invention.

4 is a perspective view of a dual source X-ray CT imaging apparatus according to a third exemplary embodiment of the present invention, and FIG. 5 is a side view of FIG. 4.

4 and 5, the dual source X-ray CT imaging apparatus 104 drives the X-ray light source unit to rotate the X-ray imaging unit 113 including the first X-ray light source unit 112 and the second X-ray light source unit 122. Means 118 are provided.

The first X-ray light source unit 112 is positioned at one side of the X-ray imaging unit 113, and the second X-ray light source unit 122 is positioned at an opposite side of the X-ray imaging unit 113 facing the first X-ray light source 112.

In this structure, the conversion of the X-ray CT imaging by the first X-ray light source unit 112 and the X-ray CT imaging using the second X-ray light source unit 122 is rotated by 180 degrees with respect to the X-ray light source unit rotation driving means 118 to be the first. The X-ray light source unit 112 and the second X-ray light source unit 122 is achieved so as to face the X-ray sensor unit 150.

4 and 5 illustrate that the X-ray light source unit rotation driving unit 118 is provided between the X-ray imaging unit 113 and the rotating arm 134. If necessary, the rotating arm 134 is provided. It may be provided inside, or may be provided inside the X-ray light source (113).

Except for the above, the same as the dual source X-ray CT imaging apparatus according to the first embodiment of the present invention.

6 is a perspective view of a dual source X-ray CT imaging apparatus according to a fourth embodiment of the present invention.

Referring to FIG. 6, in the dual source X-ray CT imaging apparatus 105, the first X-ray light source unit 117 and the second X-ray light source unit 127 are horizontally disposed on one side of the rotating arm 135 that faces the X-ray sensor unit 150. Parallel to the direction. An X-ray light source unit driving unit 144 is provided between the X-ray light source units 117 and 127 and one side of the rotary arm 135 to move the first X-ray light source unit 117 and the second X-ray light source unit 127 in a horizontal direction. It forms a shifting structure.

That is, the alternating of the first X-ray light source unit 117 and the second X-ray light source unit 127 is in a state where one of the X-ray light source units 117 and 127 is positioned at an opposite position to the X-ray sensor unit 150. The X-ray light source parts 117 and 127 may be shifted in the left or right direction so that the other X-ray light source parts are positioned in position.

Except for the above, the same as the dual source X-ray CT imaging apparatus according to the first embodiment of the present invention.

7 is a perspective view of a dual source X-ray CT imaging apparatus according to a fifth embodiment of the present invention.

Referring to FIG. 7, the dual source X-ray CT imaging apparatus 106 includes a first X-ray light source unit 115, a second X-ray light source unit 125, an X-ray sensor unit 150, and a rotation arm 136.

The first X-ray light source unit 115 and the second X-ray light source unit 125 are provided with fastening members 116 and 126 fastened to a predetermined portion of the rotary arm 136, and the predetermined arm of the rotary arm 136 is provided. The portion is provided with a fastening part 137 to which the first X-ray light source unit 115 or the second X-ray light source unit 125 is fastened.

That is, since the first X-ray light source unit 115 and the second X-ray light source unit 125 are configured to be detachable from the rotating arm 136, the first X-ray light source unit 115 and the second X-ray may be disposed according to a user's needs. Any one of the light source units 125 may be selected and attached to the fastening unit 137 of the rotary arm 136.

Except for the above, the same as the dual source X-ray CT imaging apparatus according to the first embodiment of the present invention.

8 is a perspective view of a dual source X-ray CT imaging apparatus equipped with a collimator.

The collimator 180 may be generated by the first X-ray light source unit 112 or the second X-ray light source unit 114 to guide X-rays detected by the X-ray sensor unit 150. That is, the X-rays reach only a certain region of the X-ray sensor unit 150.

The collimator mounting member 152, which can mount the collimator 180, is provided at a predetermined position of the rotary arm 130. When the collimator 180 is not used, the collimator ( 180) can be removed.

Although FIG. 8 illustrates a structure in which the collimator 180 is detached from the dual source X-ray CT imaging apparatus of FIG. 2, the dual source X-ray CT imaging apparatus according to various embodiments illustrated in FIGS. 1 to 7 is also illustrated. A structure in which the collimator 180 is detachable may be used, and drawings and descriptions thereof will be omitted since it is duplicated.

Meanwhile, when the X-ray CT is photographed using the first X-ray light source unit 112 and the second X-ray light source unit 122 as illustrated in FIG. 5, X-ray imaging by the first X-ray light source unit 112 and the second X-ray light source unit 122 are performed. Since the optimal magnification ratio according to X-ray imaging (where the magnification ratio means the distance between the X-ray light source unit and the object versus the distance of the X-ray light source unit and the X-ray sensor unit) is different, the dual source X-ray CT imaging apparatus of the present invention provides such an optimal magnification ratio. The separation distance L is adjusted so as to optimize the separation distance L between the X-ray light source units 112 and 122 and the X-ray sensor 150.

Except for the above, the same as the dual source X-ray CT imaging apparatus according to the first embodiment of the present invention.

9 is a schematic diagram of a structure in which the dual source X-ray CT imaging apparatus of FIG. 1 is provided with a separation distance adjusting means for adjusting the separation distance between the light source unit and the X-ray sensor unit.

Referring to FIG. 9, the dual source X-ray CT imaging apparatus is provided between the rotating arm 137 and the X-ray light source unit 111 to adjust the separation distance from the X-ray sensor unit 150 by moving the X-ray light source unit 111. X-ray light source unit separation distance adjusting means 160 may be included, or is provided between the rotation arm 137 and the X-ray sensor unit 150 to move the X-ray sensor unit 150 to the X-ray light source unit 111 An X-ray sensor unit separation distance adjusting means 170 for adjusting the separation distance may be included.

At this time, the X-ray light source unit separation distance adjusting means 160 and the X-ray sensor unit separation distance adjusting means 170 is provided with a driving means such as a motor (especially a liner motor) or a gear and the X-ray light source unit 111 and the X-ray sensor unit The separation distance between the 150 can be adjusted.

In addition, as shown in FIG. 10, the separation distance adjusting means includes an end portion of the rotary arm at a predetermined region of the rotary arm 139, preferably a central region of the rotary arm centered on the rotary arm rotary driving means 140. At least one of both ends is inserted into or withdrawn from the rotary arm end receiving space 138 based on a central region of the rotary arm 130 having an accommodation space 138 to allow the X-ray light source unit 110 and the X-ray. It may be a separation distance adjusting means for adjusting the separation distance of the sensor unit 150.

In this case, although both ends are inserted or drawn out into the rotary arm end receiving space 138 in FIG. 10, if necessary, either end of the both ends is inside the rotary arm end receiving space 138. Furnace may be inserted or withdrawn, and the other end being fixed.

Except for the above, the same as the dual source X-ray CT imaging apparatus according to the first embodiment of the present invention.

Those skilled in the art to which the present invention pertains have no difficulty in understanding the structure and operating principle of the drawings based on the above contents, and such structures may be variously applied and modified within the scope of the present invention.

1 is a perspective view of a dual source X-ray CT imaging apparatus according to the first embodiment of the present invention;

2 is a perspective view of a dual source X-ray CT imaging apparatus according to a second embodiment of the present invention;

3 is a side view of FIG. 2;

4 is a perspective view of a dual source X-ray CT imaging apparatus according to a third embodiment of the present invention;

5 is a side view of FIG. 4;

6 is a perspective view of a dual source X-ray CT imaging apparatus according to a fourth embodiment of the present invention;

7 is a perspective view of a dual source X-ray CT imaging apparatus according to a fifth embodiment of the present invention;

8 is a perspective view of a dual source X-ray CT imaging apparatus equipped with a collimator;

9 is a schematic diagram of a structure provided with a separation distance adjusting means for adjusting the separation distance between the light source unit and the X-ray sensor unit in the dual source X-ray CT imaging apparatus;

10 is a schematic diagram of a structure provided with another separation distance adjusting means for adjusting the separation distance between the light source unit and the X-ray sensor unit in the dual source X-ray CT imaging apparatus.

<Description of the symbols for the main parts of the drawings>

100,102,104, 105, 106: Dual source X-ray CT imaging device

110: first X-ray light source unit 120: second X-ray light source unit

150: X-ray sensor unit

130,132,134,139: rotary arm

Claims (9)

A first X-ray light source unit and a second X-ray light source unit generating X-rays; An X-ray sensor unit which faces the first X-ray light source unit or the second X-ray light source unit and detects X-rays generated by the first X-ray light source unit or the second X-ray light source unit; A rotating arm supporting the first X-ray light source unit, the second X-ray light source unit, and the X-ray sensor unit; And X-ray light source unit driving means for causing any one of the first X-ray light source unit and the second X-ray light source unit to face the X-ray sensor unit; Include, The source provided in the first X-ray light source unit and the second X-ray light source unit, respectively (source) has a different focal spot size (focal spot size), characterized in that the dual source X-ray CT imaging apparatus. The method of claim 1, The first X-ray light source unit and the second X-ray light source unit are respectively supported on one side of the rotational arm at a predetermined angle α with respect to one axis, and the X-ray light source unit driving means is provided on the rotational arm to support the rotational arm. Dual source X-ray CT imaging apparatus, characterized in that the portion is made to rotate at a predetermined angle (α) relative to the axis. The method of claim 1, The first X-ray light source unit and the second X-ray light source unit are positioned parallel to each other in a vertical or horizontal direction, and the X-ray light source unit driving unit is configured to shift the first X-ray light source unit and the second X-ray light source unit in a vertical or horizontal direction. Dual source X-ray CT imaging apparatus, characterized in that made. A first X-ray light source unit and a second X-ray light source unit generating X-rays having spot sizes of different focal points; An X-ray sensor unit which faces the first X-ray light source unit or the second X-ray light source unit and detects X-rays generated by the first X-ray light source unit or the second X-ray light source unit; A rotating arm supporting the first X-ray light source unit, the second X-ray light source unit, and the X-ray sensor unit; And The first X-ray light source unit and the second X-ray light source unit may each have a fastening member, and the fastening member may be fastened to any one of the fastening members of the fastening member of the first X-ray light source unit and the fastening member of the second X-ray light source unit. Dual source X-ray CT scanner. The method according to any one of claims 1 to 4, And the first X-ray light source unit includes a CT source, and the second X-ray light source unit includes a micro CT source. The method of claim 5, The focal spot size of the first light source unit is 0.3mm to 1mm, the focal spot size of the second light source unit is 0.02mm to 0.1mm, dual source X-ray CT imaging apparatus. The method according to any one of claims 1 to 4, And a collimator provided at a predetermined position of the rotating arm and guided by the X-rays generated by the first X-ray light source unit or the second X-ray light source unit and detected by the X-ray sensor unit. The method according to any one of claims 1 to 4, And a light source unit separation distance adjusting means for adjusting a separation distance between the first X-ray light source unit or the second X-ray light source unit and the X-ray sensor unit between the rotary arm and the first X-ray light source unit or the second X-ray light source unit. Source X-ray CT imaging device. The method according to any one of claims 1 to 4, Dual source X-ray CT imaging between the rotary arm and the X-ray sensor unit is provided with an X-ray sensor unit separation distance adjusting means for adjusting the separation distance between the first X-ray light source unit or the second X-ray light source unit and the X-ray sensor unit. Device.

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