Radiation detector module, radiation detector and radiation imaging apparatus

Patent metadata

Field	Value
Publication number	US-9257205-B2
Application number	US-201314091081-A
Country	US
Kind code	B2
Filing date	Nov 26, 2013
Priority date	Nov 26, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A detector module for a radiation detector in a radiation imaging apparatus is provided. The detector module includes a detecting element array including a plurality of detecting elements arranged in a matrix form in first and second directions orthogonal to each other, the detecting element array configured to allow radiation to penetrate through spaces defined between the detecting elements, an electronic circuit arranged on a radiation emission side of the detecting element array, and a radiation shielding body arranged on a radiation incident side of the detecting element array. The radiation shielding body includes a base material having radiation permeability and formed with a plurality of grooves extending in the first direction at respective positions corresponding to spaces between the detecting elements in the second direction, and a plurality of radiation shielding materials each inserted in a respective groove of the plurality of grooves.

First claim

What is claimed is:

1. A detector module for a radiation detector in a radiation imaging apparatus, the detector module comprising:
a detecting element array comprising a plurality of detecting elements arranged in a matrix form in first and second directions orthogonal to each other, the detecting element array configured to allow radiation to penetrate through spaces defined between the detecting elements;
an electronic circuit arranged on a radiation emission side of the detecting element array; and
a radiation shielding body arranged on a radiation incident side of the detecting element array, the radiation shielding body comprising:
a base material having radiation permeability and formed with a plurality of grooves extending in the first direction at respective positions corresponding to spaces between the detecting elements in the second direction; and
a plurality of radiation shielding materials each inserted in a respective groove of the plurality of grooves.

2. The detector module according to claim 1 , wherein the base material includes a carbon resin.

3. The detector module according to claim 1 , wherein the base material is formed in a plate-like fashion.

4. The detector module according to claim 3 , wherein the base material has a plate thickness greater than or equal to 0.2 mm and less than or equal to 1 mm.

5. The detector module according to claim 1 , wherein the radiation shielding materials each contain one of tungsten and molybdenum.

6. The detector module according to claim 1 , wherein the radiation shielding materials are each molded in a wire form, in a bar form, or by hardening powder.

7. The detector module according to claim 1 , wherein the radiation shielding materials each have a width in the second direction that is equivalent to a length that is from one to three times a width of each of the spaces.

8. The detector module according to claim 1 , wherein the detecting elements each comprise a scintillator and a photoelectric conversion element.

9. The detector module according to claim 1 , wherein the detecting element array comprises a light-reflecting member positioned in the spaces.

10. The detector module according to claim 1 , wherein the electronic circuit comprises a circuit configured to process signals outputted from the detecting elements.

11. The detector module according to claim 1 , wherein the electronic circuit comprises an integrated circuit.

12. A radiation detecting device comprising:
a radiation detector in which a plurality of detector modules according to claim 1 are arranged in the first direction; and
a plurality of collimator plates arranged on a radiation incident side of the radiation detector and each extending in the second direction at respective positions corresponding to the spaces defined between the detecting elements in the first direction.

13. A radiation detecting device comprising:
a radiation detector in which a plurality of detector modules according to claim 2 are arranged in the first direction; and
a plurality of collimator plates arranged on a radiation incident side of the radiation detector and each extending in the second direction at respective positions corresponding to the spaces defined between the detecting elements in the first direction.

14. A radiation detecting device comprising:
a radiation detector in which a plurality of detector modules according to claim 11 are arranged in the first direction; and
a plurality of collimator plates arranged on a radiation incident side of the radiation detector and each extending in the second direction at respective positions corresponding to the spaces defined between the detecting elements in the first direction.

15. A radiation imaging apparatus comprising a radiation detecting device according to claim 12 .

16. A radiation imaging apparatus comprising a radiation detecting device according to claim 13 .

17. A radiation imaging apparatus comprising a radiation detecting device according to claim 14 .

18. The radiation imaging apparatus according to claim 15 , wherein the radiation imaging apparatus is configured to perform radiation tomographic imaging.

19. The radiation imaging apparatus according to claim 16 , wherein the radiation imaging apparatus is configured to perform radiation tomographic imaging.

20. The radiation imaging apparatus according to claim 17 , wherein the radiation imaging apparatus is configured to perform radiation tomographic imaging.

Assignees

• Gen Electric

Inventors

• Kurochi Haruo
• Ikhlef Abdelaziz

Classifications

• G01T1/2985

  In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis); (using external radiation sources A61B6/02) · CPC title

• G21K1/025

  using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation · CPC title

• G01N23/046 Primary

  using tomography, e.g. computed tomography [CT] · CPC title

• G21F1/00 Primary

  Shielding characterised by the composition of the materials · CPC title