JP2003177181A - Two-dimensional radiation detector and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a two-dimensional radiation detector and its manufacturing method, which can sufficiently remove scattered rays not only in a channel direction but also in a slice direction, can be fabricated easily and manufactured highly accurately, and can obtain a large number of tomographic images at a time. <P>SOLUTION: In this two-dimensional radiation detector, a channel direction collimator 15 is integrally manufactured using a jig frame, while a slice direction collimator 16 is manufactured being divided into blocks also using the jig frame. The slice direction collimator 16 is fixed in two stages as an assembly being aligned on a multidirectional and approximate planate-supporting surface on the upper part of the channel direction collimator 15. Accordingly, the scattered rays in the channel direction and slice direction can be sufficiently removed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-dimensional radiation detector used in a dual slice X-ray CT apparatus, a multi-slice X-ray CT apparatus, a cone-beam X-ray CT apparatus, etc., and particularly to a detector element array. Correspondingly, the present invention relates to a two-dimensional radiation detector in which collimators for preventing scattered radiation are two-dimensionally arranged in the channel direction and the slice direction, and a manufacturing method thereof.

[0002]

2. Description of the Related Art An X-ray CT apparatus uses X-rays emitted from an X-ray tube.
The rays are focused into a fan-shaped X-ray beam by the collimator of the radiation port, and the X-ray tube and the arc-shaped collimator and the detector arranged to face the X-ray tube rotate around the object and the object passes through the object. The detector captures the X-ray information, and the X-ray of the subject is detected.
A line tomographic image is obtained. There are X-rays emitted from the X-ray tube that go straight through the subject and are scattered by the subject, and only the former information is taken in to remove the obliquely incident scattered rays and its crosstalk. In order to prevent this, a collimator is provided in front of the detector. In this collimator, an X-ray shield wall is formed in front of the detectors arranged one-dimensionally or two-dimensionally for each channel by using a material that does not easily transmit X-rays.

Further, the detector has an X-ray detecting element consisting of a scintillator element for converting X-rays into light and a photodiode for detecting the light converted by the scintillator element and outputting it as an electric signal. About 500 to 1000 channels are arranged in an arc shape around the center in the channel direction. 8 ~ in the channel direction on the substrate
One module is made by optically bonding a large number of scintillators for 32 channels and 8 to 64 channels in the slice direction to photodiodes, and such detectors are continuously arranged in a substantially arc shape and combined with a collimator. Constitutes a radiation detector for CT.

FIG. 7 is a perspective view of a collimator and a detector section of a conventional single slice radiation detector, and FIG. 8 shows a sectional structure in the slice direction of the conventional single slice radiation detector. In these figures, the collimator comprises a channel direction collimator plate 3a, an arcuate main support plate 1a provided in the front and rear in the slice direction, a sub support plate 2a, and a sub support plate 2a attached to the main support plate 1a. The support bar 21a for holding and the attachment plate 4a attached to the sub-support plate 2a are included. A channel-direction collimator plate 3a is inserted and fixed between the main support plate 1a and the sub-support plate 2a in the slice direction in the incident direction of the X-ray beam emitted from the X-ray tube 14 to support both ends of the collimator. It is reinforced by the rod 21a.

The fixing operation of the channel-direction collimator plate 3a has a hollow space having a shape along the entire outer shape of the collimator, and a large number of vertical grooves into which the channel-direction collimator plate 3a can be inserted along the inside of this space. After the channel direction collimator plate 3a is vertically inserted along the groove into a jig frame having, and the main support plate 1a and the sub support plate 2a are integrally bonded to the upper and lower surfaces of the channel direction collimator plate 3a, It is produced by pulling out from the jig frame body from the main support plate 1a side. After that, in the manufactured collimator, the mounting plate 4a is fixed to the sub-support plate 2a with the mounting bolt 9a. The direction in which the channel direction collimator plate 3a is fixed is converged in the focal direction of the X-ray tube 14,
The vertical grooves of the jig frame are processed so that their directions are converged in the focal direction of the X-ray tube 14, respectively.

Below the collimator, a single-slice detector section 17a is shown which is disassembled in the lower direction of FIG. That is, the single slice detector unit 1
7a is a scintillator 7a, a photodiode array (PDA) 6a, and a switching element 8a as shown in FIG.
The circuit board 5a on which is mounted and a signal cable (not shown) for extracting a signal are provided. Then, the single slice detector portion 17a is fixed downward by the mounting bolt 9a. At this time, the positional accuracy of the channel direction collimator plate 3a and the single slice detector portion 17a is accurately positioned so that the detection sensitivity of each detector is uniform and maximized. Finally, a cover (not shown) is covered to integrate the collimator and the detector unit into the main support plate 1a.
It is attached to the rotating frame (not shown) of the CT apparatus via.

[0007]

Although the conventional radiation detector is constructed as described above, it is a detector which is arranged one-dimensionally only in the channel direction (the direction perpendicular to the body axis of the subject). However, the tomographic image can obtain only one slice. Therefore, scanning must be performed many times in order to obtain a multi-layer tomographic image. Therefore, in order to obtain many slice data at one time, a scintillator and a photodiode array (PDA) provided on the substrate
A two-dimensional radiation detector is used in which a plurality of X-ray detection elements consisting of are arrayed in a plurality of rows not only in the channel direction but also in the slice direction (body axis direction of the subject) orthogonal thereto.

As an X-ray apparatus adopting such a two-dimensional radiation detector, a dual slice X-ray CT apparatus, a multi-slice X-ray CT apparatus, or a cone beam X-ray CT apparatus
Although there are devices, it is necessary to remove scattered rays in the slice direction in these devices, and the height of the collimator plate in the channel direction is made higher than that used in the single-slice X-ray CT device to cope with this. This is because the grid ratio is increased by increasing the height to remove scattered X-rays obliquely incident in the slice direction from the channel direction.
However, there is a problem that scattered X-rays that are directly incident in the slice direction cannot be removed. Therefore, the removal of scattered radiation becomes incomplete by merely increasing the height of the collimator plate in the channel direction.

The construction of the proposed conventional two-dimensional radiation detector is exploded and schematically shown in FIG. That is, this two-dimensional radiation detector has an arc-shaped slice direction shield plate 5 centered on the X-ray tube focus 56.
2, the channel direction shielding plate 53, and the two-dimensional detector array 54 are provided in three stages, and the two-dimensional array type radiation detector 55 is constituted by these and is formed in a structure converging in the direction of the X-ray tube focus 56. ing. When manufacturing the slice direction shield plate 52 and the channel direction shield plate 53, as shown in FIGS. 11 and 10, a support plate 57 and a support plate 58, which are thin arcuate plates in the front and rear direction, are prepared. And, grooves corresponding to the slice direction shield plate 52 and the channel direction shield plate 53 are formed on the corresponding inner surfaces of these support plates,
The slice direction shield plate 52 and the channel direction shield plate 53 are inserted and fixed in the groove.

In the structure of the collimator of this detector, the support plate 57, the support plate 58 and the slice direction shield plate 52 are used.
Since the channel direction shielding plate 53 and the like are both expensive, and particularly the supporting plate 57 and the supporting plate 58 must be complicatedly grooved, it is required to manufacture them with extremely high precision, and the processing is required. There are problems such as being difficult. Further, there is a problem that the X-ray transmitted through the subject is absorbed by the support plate 57 and the support plate 58 and a clear X-ray image cannot be obtained.

Further, in the case of such a two-dimensional radiation detector, the slice direction collimator is combined above the channel direction collimator, that is, on the X-ray incidence side surface, but the upper surface of the channel direction collimator is arcuate, and the combination of the slice direction collimator is used. The surface is also arcuate so as to follow it. Therefore, it is difficult to determine the positioning between both collimators, and particularly in high-speed rotation CT, there is a problem that the slice direction collimator is displaced during rotation and accurate measurement cannot be performed.

The present invention has been made in view of the above circumstances, and it is possible to sufficiently remove scattered radiation not only in the channel direction but also in the slice direction, and it is easy to process and can be manufactured with high accuracy, and many cases can be performed at one time. It is intended to provide a two-dimensional radiation detector capable of obtaining a tomographic image and a manufacturing method thereof.

[0013]

In order to achieve the above-mentioned object, a two-dimensional radiation detector provided by the present invention comprises a collimator plate having a predetermined interval in the channel direction for removing scattered X-rays from an object. A collimator structure comprising an integrally formed channel direction collimator and a slice direction collimator in which a plurality of collimator blocks having a collimator plate having a predetermined interval in the slice direction integrally formed are arranged above the channel direction collimator. An X-ray detection element comprising a scintillator that emits light when incident X-rays that have passed through the subject and a photoelectric conversion element that receives light emitted from the scintillator to generate an electrical signal corresponding to the X-ray dose detected by the scintillator. Multiple in the channel and slice directions on an arc centered on the X-ray tube focus Those having an X-ray detector unit comprising two-dimensionally arranged. Therefore, the height of both collimator plates can be reduced.

Further, in the two-dimensional radiation detector provided by the present invention, a planar support surface for assembling the slice direction collimator in a polygonal approximate position is formed on the X-ray incidence side surface of the channel direction collimator. It is what This alignment improves the positioning accuracy of both collimators.

In the method for manufacturing a two-dimensional radiation detector provided by the present invention, the channel direction collimator in the collimator structure is manufactured through the following steps. That is, the channel-direction collimator has a hollow space whose shape follows the outer shape of the channel-direction collimator, and has a plurality of vertical grooves along which the side portions of the channel-direction collimator plate can be fitted and inserted along the inside of the space. A frame is provided, and a process of vertically inserting a plurality of channel-direction collimator plates along the vertical groove of the jig frame and one side of the channel-direction collimator plate are integrally bonded by a main support plate. And the step of adhering the other side to a sub-support plate that can penetrate the space of the jig frame, and after adhering these, the channel-direction collimator plate and both support plates to the main frame of the jig frame. It is characterized by being manufactured through the process of pulling to the side.

Therefore, the parallel accuracy of the channel direction collimator plates can be improved. Further, in the method of manufacturing a two-dimensional radiation detector provided by the present invention, the slice direction collimator in the collimator structure is manufactured through the following steps. That is, the slice direction collimator has a hollow space having a shape along the outer shape of a part of the entire collimator, and has a vertical groove along which the slice direction collimator plate and a supporting plate supporting the same can be inserted. A jig frame that can be disassembled is provided, and a process of fitting and inserting a plurality of slice-direction collimator plates and a support plate, and X-ray incidence surface side of the slice-direction collimator plate A slice direction collimator is manufactured by a process of adhering the linear transparent thin plate and a process of disassembling and pulling out the jig frame from both sides after the adhering and fixing. Therefore, the parallel accuracy of the slice direction collimator plates is improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the two-dimensional radiation detector of the present invention will be described below with reference to FIGS. Figure 1
Is a collimator section of the two-dimensional radiation detector according to the present invention,
That is, it is a perspective view of the combined structure of the channel-direction collimator 15 and the slice-direction collimator 16 and the two-dimensional radiation detector unit 17, which is partially exploded, and FIG. 2 is an assembly of the two-dimensional radiation detector according to the present invention. It is a figure which shows the structure which crossed the sliced state in the slice direction. The slice-direction collimator 16 attached to the upper part of the channel-direction collimator 15 is, for convenience of explanation, an X-ray transmissive thin plate 11.
Is removed so that the arrangement of the slice direction collimator plate 12 inside can be understood. The two-dimensional radiation detector shown in FIGS. 1 and 2 is a multi-slice type two-dimensional radiation detector for an X-ray CT apparatus capable of simultaneously scanning 16 slices at a pitch of 1.25 mm, for example. The two-dimensional radiation detector of the present invention comprises a channel-direction collimator 15, a slice-direction collimator 16 and a two-dimensional radiation detector section 17.

In this embodiment, the slice direction collimator 16 which is formed separately and integrally is mounted on the upper part of the channel direction collimator 15 which is integrally formed so as to be superposed by the mounting bolts 13 in order. A two-dimensional radiation detector section 17 in which a large number of two-dimensional detection elements are arranged is accurately arranged and fixed by a mounting bolt 9 in the lower part of these collimator structures. At this time, the channel-direction collimator 15, the slice-direction collimator 16, and the two-dimensional radiation detector unit 17
The position accuracy of is accurately positioned so that the detection sensitivity of each detector is uniform and maximized. Finally, a cover (not shown) is covered, and the one in which the collimator section and the detector section are integrated is attached to the rotary frame of the CT apparatus via the main support plate 1.

The channel-direction collimator 15 includes a channel-direction collimator plate 3 and an arcuate main support plate 1 provided in front of and behind the slice direction, a sub-support plate 2, and a main support plate 1.
The support rod 21 is mounted on the sub-support plate 2 and holds the sub-support plate 2, and the mounting plate 4 mounted on the sub-support plate 2. A channel-direction collimator plate 3 is inserted and fixed between the main support plate 1 and the sub-support plate 2 in the slice direction in the incident direction of the X-ray beam emitted from the X-ray tube 14, and both ends of the collimator are supported. It is reinforced with a stick.

The slice-direction collimator 16 has a large number of slice-direction collimator plates 12 on the X-ray incident surface side and the two-dimensional radiation detector section 17 as shown in an exploded view in the upper right portion of FIG.
From the side (lower surface side) is fixed by being sandwiched by X-ray transmissive thin plates 11 having good X-ray transparency, and sandwiched and fixed by the slice direction collimator support plates 10 on both sides in the channel direction. And forms a one-block modular structure. Both ends of the X-ray transmissive thin plate 11 where the slice direction collimator support plate 10 is located are closely arranged on the upper part of the mounting plate 4 mounted on the main supporting plate 1 and the sub supporting plate 2 and fixed by mounting bolts 13. X on the upper surface where the slice direction collimator plates 12 are arranged in parallel
The central portion of the line-transmissive thin plate 11 is supported on the upper portion of the channel-direction collimator plates 3 arranged in a polygonal approximation. Since the joint between the blocks coincides with the channel direction collimator plate 3 with respect to the incident X-ray, no positioning error occurs. Moreover, the pitch of each of the channel direction collimator plate 3 and the slice direction collimator plate 12 is configured to match the pitch of the detector elements of the two-dimensional radiation detector section 17. In addition, 18 is a signal cable for taking out a detection signal.

In the two-dimensional radiation detector section 17, as shown in FIG. 2, a photodiode array (PDA) 6 and a switching element 8 are provided on a substrate 5.
The scintillator 7 is two-dimensionally formed on the photodiode array 6 so as to match the pitch of the slice direction collimator plate 12 in the slice direction and the channel direction collimator plate 3 in the channel direction. It is located in. The channel-direction collimator 15, the slice-direction collimator 16, and the two-dimensional radiation detector unit 17 are both accurately positioned and fixed by mounting bolts 9 and 13.

Next, a method of manufacturing the collimator of the two-dimensional radiation detector of the present invention will be described with reference to FIG. In manufacturing the channel direction collimator 15, first, as shown in FIG. 3, there is a hollow space having a shape along the outer shape of the collimator, and both widthwise side portions of the channel direction collimator plate 3 are arranged along the inner side of this space. A jig frame 31 having a large number of vertical grooves 32 that can be fitted therein is prepared.
Then, the channel-direction collimator plate 3 is vertically inserted into the jig frame 31 along the vertical groove 32.

Next, as shown in a sectional view of FIG. 4, the right side of the channel direction collimator plate 3 is integrally bonded to the main supporting plate 1 and the left side of the channel direction collimating plate 3 is integrally bonded to the sub supporting plate 2 with an adhesive 33.
The auxiliary support plate 2 is sized so as to be able to penetrate the space of the jig frame 31. After being bonded, the channel-direction collimator plate 3 is pulled out from the jig frame 31 in the direction toward the main support plate 1. After that, as shown in FIG. 2, the mounting plate 4 of the manufactured channel direction collimator 15 is fixed to the auxiliary support plate 2 with bolts. The vertical direction 32 of the jig frame 31 is converged in the focal direction of the X-ray tube 14 so that the direction in which the channel direction collimator plate 3 is fixed is converged in the focal direction of the X-ray tube 14. It is processed as described.

Here, the channel direction collimator 15
When the slice-direction collimator 16 is assembled upwardly and accurately in a polygonally approximated position, the bottom surface of the block of the slice-direction collimator 16 can be closely attached to and supported by the top surface of the channel-direction collimator plate 3 of the channel-direction collimator 15. The structure is such that it can withstand the centrifugal force G due to high-speed rotation during scanning. That is, as shown in FIG. 5, in the vertical groove 32 of the jig frame 31, a planar support surface 34 for positioning is formed so that the upper surfaces of the channel direction collimator plates 3 are aligned in a polygonal approximation. In this state, the channel direction collimator plate 3 is manufactured by positioning and fixing it. With such a configuration, the collimator in each slice direction does not shift or come off even when a high-speed scan is performed, and the structure is solid. This is also a major feature of the present invention.

On the other hand, when manufacturing the slice direction collimator 16, as shown in FIG. 6, there is a hollow space having a shape along the outline of a part of the entire collimator, and the slice direction collimator plate is provided along the inside of the space. 12 and a groove plate 42 and a base 43 having a vertical groove 44 into which the slice direction collimator support plate 10 supporting the same 12 can be inserted.
A jig frame body 41 composed of and is prepared. Then, the slice direction collimator plate 12 and the slice direction collimator support plate 10 are attached to the jig frame 41 in the vertical groove 4
Insert into 4. In this way, after the slice direction collimator plate 12 and the slice direction collimator support plate 10 are fitted into the vertical grooves 44, as shown in FIG. 2, X-rays are emitted on both sides of the X-ray incident surface and the emission surface side. On the other hand, the X-ray transparent thin plate 11 having good transparency is bonded to complete the production.

At this time, the X-ray transparent thin plate 11 is adhered so as to cover the entire slice direction collimator plate 12 and the slice direction collimator support plate 10. Height d of the vertical groove 44
Is set lower than the height h of the slice direction collimator plate 12 and the slice direction collimator support plate 10.
Further, similarly, X having good transparency to the surface side of the detector unit
The linearly transparent thin plate 11 is bonded. At this time, a part (not shown) of the base 43 that interferes with the adhesion is removed before starting the work. After that, the groove plate 42 is pulled out from both sides, and the slice direction collimator 16 is manufactured and completed. Then, as shown in FIG. 1 and FIG. 2, the upper side of the collimator 15 in the channel direction is polygonally approximated with high accuracy and assembled. Slice direction collimator support plate 10
Both ends of the X-ray transmissive thin plate 11 having the above are closely arranged on the upper part of the mounting plate 4 mounted on the main supporting plate 1 and the sub supporting plate 2 and fixed by mounting bolts 13. The central portion of the X-ray transmissive thin plate 11 having the slice direction collimator plate 12 is supported by the upper portion of the channel direction collimator plate 3 arranged in a polygonal approximation. In addition, F in FIG. 6 indicates an arrangement position of the X-ray tube.

By the way, the channel direction collimator plate 3
The slice direction collimator plate 12 includes molybdenum, tungsten, lead, an alloy containing molybdenum as a main component, an alloy containing tungsten as a main component, an alloy containing lead as a main component, and the like.
It is necessary to select a material having a large atomic number and a large X-ray absorption, and the thickness is usually 0.05 to 0.3 mm. These channel-direction collimator plate 3 and slice-direction collimator plate 12 are vertically grooved 32 machined in the jig frame 31 so that they are oriented in the focal direction when combined.
And the vertical groove 42 machined in the jig frame 41.

On the other hand, for the X-ray transmissive thin plate 11, a material is selected that has small X-ray absorption, is stable against temperature changes, has a small thermal expansion coefficient, and has excellent strength in order to maintain dimensional accuracy. In order to satisfy these conditions, so-called CFRP
(Carbon fiber reinforced p
It is desirable to select "lastics" or the like. And
The two-dimensional radiation detector unit 17 is accurately positioned below the collimator unit, and is sequentially mounted on the mounting plate 4 and the main support 1 by the mounting bolts 9 to be assembled.

The two-dimensional radiation detector provided by the present invention is as described above in detail, but is not limited to the above and the illustrated examples, and includes various modifications. For example, although the mounting plates supporting the channel direction collimator from both sides are arranged on both sides, the main supporting plate 1 side may be supported by the main supporting plate itself. Further, with respect to the slice direction collimator 16, the slice direction collimator support plate and the X-ray passing thin plate are surrounded by the slice direction collimator plate, but the slice direction collimator supporting plate and the X-ray passing thin plate are integrally formed. The frame body may be formed into a groove, and a groove may be formed in the frame body to insert the slice direction collimator plate.

[0030]

The two-dimensional radiation detector of the present invention is constructed and manufactured as described above, and multi-slice imaging can be performed by lowering the height of the channel direction collimator plate. The channel-direction collimator and slice-direction collimator are manufactured in a block shape, and the structure is mounted on the upper part of the channel-direction collimator as a group and attached in two stages, so that scattered rays in the channel and slice directions are sufficiently removed. Provided is a two-dimensional radiation detector that can be used. Further, since the planar support surface for positioning for mounting the slice direction collimator plate is formed on the upper surface of the channel direction collimator plate, processing and assembly are easy with a simple configuration, and the slice direction collimator is It has excellent advantages such as correct function without being displaced or dislocated even by high-speed scanning. Further, since the slice direction collimator is assembled as a block, the block can be easily replaced. Further, since the jig frame is used, it can be manufactured easily and accurately, and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a two-dimensional radiation detector according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a two-dimensional radiation detector according to an embodiment of the present invention.

FIG. 3 is a diagram showing a manufacturing method of the two-dimensional radiation detector according to the embodiment of the present invention.

FIG. 4 is a diagram showing a manufacturing method of the two-dimensional radiation detector according to the embodiment of the present invention.

FIG. 5 is a diagram showing a manufacturing method of the two-dimensional radiation detector according to the embodiment of the present invention.

FIG. 6 is a diagram showing a manufacturing method of the two-dimensional radiation detector according to the embodiment of the present invention.

FIG. 7 is a diagram showing a conventional radiation detector.

FIG. 8 is a diagram showing a conventional radiation detector.

FIG. 9 is a diagram showing a conventional two-dimensional radiation detector.

FIG. 10 is a diagram showing a method of manufacturing a conventional two-dimensional radiation detector.

FIG. 11 is a diagram showing a conventional method for manufacturing a two-dimensional radiation detector.

[Explanation of symbols]

1, 1a ... Main support plate 2, 2a ... Sub-support plate 3, 3a ... Channel direction collimator plate 4, 4a ... Mounting plate 5, 5a ... Substrate 6, 6a ... Photodiode array 7, 7a ... Scintillator 8, 8a ... Switching element 9, 9a, 13 ... Mounting bolt 10 ... Slice direction collimator support plate 11 ... X-ray transparent thin plate 12 ... Slice direction collimator plate 42 ... Groove plate 14 ... X-ray tube 15 ... Channel direction collimator 16 ... Slice direction collimator 17 ... Two-dimensional radiation detector section 18 ... Signal cable 31, 41 ... Jig frame 32, 44 ... Vertical groove 33 ... Adhesive 34 ... Planar support surface 43 ... Base 52 ... Slice direction shield plate 53 ... Channel direction shield plate 54 ... Two-dimensional detector array 55 ... Two-dimensional array type radiation detector 56 ... X-ray tube focus 57 ... Support plate 58 ... Support plate

Claims (4)

[Claims] 1. A channel-direction collimator in which a plurality of channel-direction collimator plates are arranged in parallel at a predetermined interval in the channel direction for removing scattered X-rays from an object and are integrally formed in a slice direction. A collimator structure including a slice direction collimator having a plurality of slice direction collimator plates juxtaposed in parallel with each other at an interval and being integrated on the channel direction collimator; An X-ray tube comprising an X-ray detection element comprising a scintillator which emits light when an X-ray that has passed through a specimen is incident, and a photoelectric conversion element which receives the light emitted from the scintillator to generate an electric signal corresponding to the X-ray dose detected by the scintillator. Two-dimensionally arranged in multiple rows in the channel and slice directions on an arc centered on the focal point A two-dimensional radiation detector comprising an X-ray detector section. 2. The X-ray incidence side surface of the channel direction collimator is formed with a flat support surface for assembling the slice direction collimator in a polygonally approximated position, and the slice direction collimator is formed on each of the flat support surfaces. The two-dimensional radiation detector according to claim 1, wherein the two-dimensional radiation detector is installed. 3. A two-dimensional radiation detection in which a collimator structure composed of a channel-direction collimator and a slice-direction collimator and an X-ray detector section which is two-dimensionally arrayed in the channel direction and the slice direction are connected. A method for manufacturing a container, wherein the channel direction collimator in the collimator structure has a hollow space having a shape along the outer shape of the collimator, and both side portions in the width direction of the channel direction collimator plate are provided along the inner side of the space. Is provided with a jig frame body having a large number of vertical grooves formed therein, and a plurality of channel-direction collimator plates are vertically inserted along the vertical grooves of the jig frame body. A plurality of channel-direction collimator plates, one side of which is integrally bonded to the main support plate and the other side of which can penetrate the hollow space of the jig frame. The process of integrally adhering to the support plate,
A two-dimensional radiation detector characterized in that a large number of collimator plates in the channel direction and both side support plates integrated by bonding are manufactured through a process of extracting from the jig frame in the direction of the main support plate. Manufacturing method. 4. A two-dimensional radiation detection in which a collimator structure composed of a channel-direction collimator and a slice-direction collimator and an X-ray detector section which is two-dimensionally arrayed in the channel direction and the slice direction are connected. A method of manufacturing a container, wherein the collimator has a hollow space having a shape along the outer shape of a part of the entire collimator,
Along with the inside of this space, a number of slice-direction collimator plates and a disassembled jig frame with vertical grooves into which support plates arranged on both sides to support them can be inserted are provided. , A process of inserting a large number of slice direction collimator plates and supporting plates on both sides into vertical grooves of the jig frame,
A process of adhering an X-ray transparent thin plate to the X-ray incident surface side and both side surfaces of the X-ray detector unit, and disassembling the jig frame body from both sides to form a large number of slice direction collimator plates in the jig frame. A method for manufacturing a two-dimensional radiation detector, characterized in that the two-dimensional radiation detector is manufactured through a process of extracting from the body.