JP5709439B2 - 3次元放射線位置検出器 - Google Patents
3次元放射線位置検出器 Download PDFInfo
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- JP5709439B2 JP5709439B2 JP2010192397A JP2010192397A JP5709439B2 JP 5709439 B2 JP5709439 B2 JP 5709439B2 JP 2010192397 A JP2010192397 A JP 2010192397A JP 2010192397 A JP2010192397 A JP 2010192397A JP 5709439 B2 JP5709439 B2 JP 5709439B2
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- light
- crystal
- scintillator
- light emission
- pixel
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- 230000005855 radiation Effects 0.000 title claims description 21
- 239000013078 crystal Substances 0.000 claims description 108
- 238000001514 detection method Methods 0.000 claims description 77
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000005191 phase separation Methods 0.000 claims description 17
- 239000012071 phase Substances 0.000 description 25
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 20
- 239000000463 material Substances 0.000 description 13
- 238000004364 calculation method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 10
- 239000011159 matrix material Substances 0.000 description 9
- 239000006185 dispersion Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000005496 eutectics Effects 0.000 description 6
- 238000002600 positron emission tomography Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000004455 differential thermal analysis Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000003925 brain function Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
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- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
- G01T1/164—Scintigraphy
- G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
- G01T1/1642—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using a scintillation crystal and position sensing photodetector arrays, e.g. ANGER cameras
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
- G01T1/164—Scintigraphy
- G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
- G01T1/1644—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using an array of optically separate scintillation elements permitting direct location of scintillations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/037—Emission tomography
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
- Nuclear Medicine (AREA)
Description
21 第一の結晶相
22 第二の結晶相
31 試料
32 ヒーター
33 水冷部
41 PS−PMT
42 NaCl−CsIシンチレータ結晶体
43 CsIシンチレータ結晶体
44、62 光検出部(検出画素)
45 発光位置直下の光検出部(検出画素)
61 光検出面
62 画素
63 シンチレーション光(発光)
Claims (4)
- 複数の光検出部を有する光検出器と、一軸光学異方性を有し該一軸方向において連続するシンチレータ結晶体とを備え、前記一軸方向にn段階の位置同定を行う3次元放射線位置検出器であって、
前記シンチレータ結晶体は、前記シンチレータ結晶体の前記一軸方向と前記光検出器の光検出面の法線方向とが非直交
になるように前記光検出器の前記光検出面に配置され、
前記一軸方向における長さが前記複数の光検出部の配列ピッチの3倍以上であり、
前記シンチレータ結晶体を前記一軸方向にn個の領域に分け、前記光検出部に最も近い領域を1番目の領域とし、前記光検出部から最も離れた領域をn番目の領域とするとき、
前記一軸光学異方性は、前記n番目の領域のうち、前記光検出部上で発生したシンチレーション光を当該光検出部に4%以上到達させ、且つ、前記1番目の領域のうち、前記光検出部上で発生したシンチレーション光を当該光検出部に4%以上且つ35%以下到達させるものであることを特徴とする3次元放射線位置検出器。 - 前記シンチレータ結晶体は、前記一軸方向に伸びる柱状の複数の第一の結晶相を、前記第一の結晶相よりも屈折率が大きい第二の結晶相の中に有する相分離構造からなることを特徴とする請求項1に記載の3次元放射線位置検出器。
- 前記複数の光検出部のそれぞれに、前記複数の第一の結晶相が配置されていることを特徴とする請求項2に記載の3次元放射線位置検出器。
- 前記複数の第一の結晶相のそれぞれは、直径が50nm以上30μm以下であり、
前記複数の第一の結晶相のピッチが500nm以上50μm以下であることを特徴とする請求項3に記載の3次元放射線位置検出器。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010192397A JP5709439B2 (ja) | 2010-08-30 | 2010-08-30 | 3次元放射線位置検出器 |
US13/213,393 US8344328B2 (en) | 2010-08-30 | 2011-08-19 | Three-dimensional radiation position detector |
CN201110244310.4A CN102385063B (zh) | 2010-08-30 | 2011-08-25 | 三维放射线位置检测器 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010192397A JP5709439B2 (ja) | 2010-08-30 | 2010-08-30 | 3次元放射線位置検出器 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012047690A JP2012047690A (ja) | 2012-03-08 |
JP5709439B2 true JP5709439B2 (ja) | 2015-04-30 |
Family
ID=45695871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010192397A Expired - Fee Related JP5709439B2 (ja) | 2010-08-30 | 2010-08-30 | 3次元放射線位置検出器 |
Country Status (3)
Country | Link |
---|---|
US (1) | US8344328B2 (ja) |
JP (1) | JP5709439B2 (ja) |
CN (1) | CN102385063B (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8674309B2 (en) | 2010-01-28 | 2014-03-18 | Canon Kabushiki Kaisha | Scintillator crystal body, method for manufacturing the same, and radiation detector |
US9488602B2 (en) * | 2012-01-13 | 2016-11-08 | National Institutes For Quantum And Radiological Science And Technology | Radioactive substance detection device, radiation source location visibility system, and radioactive substance detection method |
JP2014139564A (ja) * | 2012-12-20 | 2014-07-31 | Sony Corp | 撮像装置および電子機器 |
JP6271909B2 (ja) * | 2013-08-20 | 2018-01-31 | キヤノン株式会社 | シンチレータ結晶体及び放射線検出器 |
CN105769229B (zh) * | 2014-12-24 | 2018-08-03 | 沈阳东软医疗系统有限公司 | 一种计算pet系统半径扩大值的方法、图像重建方法及装置 |
JP7109168B2 (ja) * | 2017-09-13 | 2022-07-29 | 浜松ホトニクス株式会社 | 放射線位置検出方法、放射線位置検出器及びpet装置 |
EP3470872B1 (en) * | 2017-10-11 | 2021-09-08 | Melexis Technologies NV | Sensor device |
US10267931B1 (en) * | 2018-02-06 | 2019-04-23 | Siemens Medical Solutions Usa, Inc. | Radiation detector capable of measuring depth-of-interaction |
CN109633730B (zh) * | 2018-12-18 | 2020-10-20 | 北京永新医疗设备有限公司 | 放射源的定位系统和定位方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19715725C1 (de) * | 1997-04-15 | 1998-12-10 | Siemens Ag | Leuchtstoff-Körper mit anisotroper Lichtleitung und Verfahren zur Herstellung |
JP3697340B2 (ja) | 1997-11-07 | 2005-09-21 | 独立行政法人放射線医学総合研究所 | 放射線入射位置3次元検出器の発光位置特定方法 |
US6391434B1 (en) * | 1999-05-06 | 2002-05-21 | General Electric Company | Composite scintillator material and method of manufacture |
US6841783B2 (en) * | 2002-12-13 | 2005-01-11 | Siemens Medical Solutions Usa, Inc. | Channels for control of scintillation crystal light response |
ES2239506B1 (es) | 2003-04-10 | 2006-11-16 | Consejo Superior Investigacion | Detector de rayos gamma con codificacion de profundidad de interaccion. |
DE10335125B4 (de) * | 2003-07-31 | 2007-09-13 | Siemens Ag | Verfahren zur Herstellung eines Leuchtstoffkörpers für einen Röntgendetektor |
US7709805B2 (en) * | 2003-08-01 | 2010-05-04 | General Electric Company | Method for generating optical anisotropy in scintillators using pulsed lasers |
EP1825299B1 (en) * | 2004-12-09 | 2016-03-09 | Koninklijke Philips N.V. | Pixelated detectors with depth of interaction sensitivity |
JP5225051B2 (ja) * | 2008-12-11 | 2013-07-03 | 浜松ホトニクス株式会社 | シンチレータ、放射線検出器、およびシンチレータの製造方法 |
US8399843B2 (en) * | 2008-12-17 | 2013-03-19 | Saint-Gobain Ceramics & Plastics, Inc. | Scintillation array method and apparatus |
-
2010
- 2010-08-30 JP JP2010192397A patent/JP5709439B2/ja not_active Expired - Fee Related
-
2011
- 2011-08-19 US US13/213,393 patent/US8344328B2/en not_active Expired - Fee Related
- 2011-08-25 CN CN201110244310.4A patent/CN102385063B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2012047690A (ja) | 2012-03-08 |
US20120049073A1 (en) | 2012-03-01 |
CN102385063B (zh) | 2014-08-27 |
CN102385063A (zh) | 2012-03-21 |
US8344328B2 (en) | 2013-01-01 |
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