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Radiation detector and radiation inspecting apparatus

A radiation detector and radiation technology, which are applied in measurement devices, radiation measurement, radiation intensity measurement, etc., can solve the problems of increased assembly cost, increased material cost, increased manufacturing cost, etc., so as to suppress the increase of manufacturing cost and maintain detection efficiency. , the effect of good spatial resolution

Inactive Publication Date: 2009-05-13
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, although the semiconductor detection unit 102A having the semiconductor element detection arrays 105a and 105b can maintain the detection efficiency and the spatial resolution is good over the field of view as a whole, the number of semiconductor detection elements 105 and figure 2 In the case of (A), it is doubled
In this way, the detection circuit connected to each semiconductor detection element 105 and the number of downstream circuits will also be doubled, so in addition to the increase in material cost, the assembly cost also increases, thereby greatly increasing the manufacturing cost.

Method used

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  • Radiation detector and radiation inspecting apparatus

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no. 1 approach

[0055] Fig. 3 is a block diagram showing the configuration of a PET apparatus according to the first embodiment of the present invention.

[0056] Referring to FIG. 3 , the PET apparatus 10 includes: a radiation detector 11 disposed around the subject S for detecting gamma rays; an information processing unit 12 processing the detection data from the radiation detector 11 and regenerating the obtained Image data of the position of the positron nuclide RI in the body of the subject S; the display unit 13, which displays the image data, etc.; the control unit 14, which controls the movement of the subject S or the radiation detector 11, etc.; and the output unit 15 , is composed of a terminal for sending instructions to the information processing unit 12 and the control unit 14, a printer for outputting image data, or the like.

[0057] The radiation detector 11 includes a semiconductor detection unit 20 and a detection circuit 30 . The semiconductor detection unit 20 is arrang...

no. 2 approach

[0096] Next, a PET apparatus according to a second embodiment of the present invention will be described. The PET apparatus related to the second embodiment is a modified example of the PET apparatus related to the first embodiment, and FIG. 4 and Figure 5 The illustrated semiconductor detection unit 20 is an example in which the number of semiconductor detection element arrays is expanded to n. The semiconductor detecting part of the second embodiment is the same as that shown in FIG. 4 and FIG. 4 except the number and arrangement of the semiconductor detecting element array. Figure 5 The illustrated semiconductor detectors are the same except for being different.

[0097] FIG. 9 is a schematic plan view of a semiconductor detection unit 40 constituting a PET device according to a second embodiment of the present invention. In the drawings, the same reference numerals (including reference numerals with different suffixes are also included) are attached to the parts corres...

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Abstract

On a wiring board 21, first and second semiconductor detection device arrays 22a and 22b are arranged along a depth direction (Y-axial direction). Each of the first and the second semiconductor detection device arrays 22a and 22b is composed by arranging six semiconductor detection devices 231 through 236 in one line in an arrangement direction (X-axial direction). Guard members 28a and 28b are arranged one on each end in the arrangement direction. In the semiconductor detection devices 231 through 236 of the first and the second semiconductor detection device arrays 22a and 22b, a kth (k is one of the number from 1 to 6) semiconductor detection device 23k from a reference line Xa is arranged by being shifted from others by 1 / 2 of a gap PT of the semiconductor detecting devices 231 through 236 in the arrangement direction.

Description

technical field [0001] The present invention relates to a radiation detector and a radiation inspection device, and more particularly to a radiation detector and a radiation inspection device for detecting gamma rays emitted from a radioisotope in a subject. Background technique [0002] In recent years, tomography apparatuses have been widely used to obtain information on the interior of living bodies (subjects). Examples of the tomography apparatus include X-ray computed tomography (X-ray CT) apparatus, magnetic resonance imaging apparatus, SPECT (single photon emission: single photon emission CT) apparatus, and positron emission tomography (PET) apparatus. The X-ray CT device exposes a narrower X-ray beam on a section of the living body from multiple directions, detects the transmitted X-ray, and calculates the spatial distribution of the absorption degree of the X-ray in the section through a computer, so that picture. In this way, abnormalities in the internal form of...

Claims

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Application Information

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IPC IPC(8): G01T1/161G01T1/24
CPCG01T1/2985G01T1/242G01T1/249A61B6/037G01T1/161G01T1/24
Inventor 天野大三
Owner SUMITOMO HEAVY IND LTD
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