JP2016528484A - 安定化光出力を有する画像化応用のための放射線検出器 - Google Patents
安定化光出力を有する画像化応用のための放射線検出器 Download PDFInfo
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- 230000005855 radiation Effects 0.000 title claims abstract description 69
- 238000003384 imaging method Methods 0.000 title description 6
- 230000007547 defect Effects 0.000 claims abstract description 34
- 238000001514 detection method Methods 0.000 claims description 5
- 230000005865 ionizing radiation Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 16
- 239000013078 crystal Substances 0.000 description 17
- 239000000523 sample Substances 0.000 description 14
- 238000005424 photoluminescence Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
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- 239000002800 charge carrier Substances 0.000 description 4
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- 238000010438 heat treatment Methods 0.000 description 4
- 229910052684 Cerium Inorganic materials 0.000 description 3
- 239000012190 activator Substances 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- ORCSMBGZHYTXOV-UHFFFAOYSA-N bismuth;germanium;dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Ge].[Ge].[Ge].[Bi].[Bi].[Bi].[Bi] ORCSMBGZHYTXOV-UHFFFAOYSA-N 0.000 description 3
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000002059 diagnostic imaging Methods 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 3
- ZPDRQAVGXHVGTB-UHFFFAOYSA-N gallium;gadolinium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Gd+3] ZPDRQAVGXHVGTB-UHFFFAOYSA-N 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000002600 positron emission tomography Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000013076 target substance Substances 0.000 description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012472 biological sample Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000005524 hole trap Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000002603 single-photon emission computed tomography Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- 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
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/2002—Optical details, e.g. reflecting or diffusing layers
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- 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
- A61B6/58—Testing, adjusting or calibrating thereof
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- 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
- G01T1/20—Measuring radiation intensity with scintillation detectors
-
- 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
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
-
- 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
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
- G01T1/2023—Selection of materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/005—Details of radiation-measuring instruments calibration techniques
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- Heart & Thoracic Surgery (AREA)
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- Measurement Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
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Abstract
Description
本出願は、参照によりその開示の全ての内容が本明細書に組み入れられるところの、2013年6月14日に出願された「RADIATION DETECTOR FOR IMAGING APPLICATIONS WITH STABILIZED LIGHT OUTPUT」と題する米国仮特許出願第61/835,072号の利益を主張する。
本発明は、高エネルギー画像化システムおよび高エネルギー光子検出器に関する。
シンチレーション物質は、医療画像化、地質学的調査、国土安全保障を含む様々な応用並びに高エネルギー物理学における、高エネルギー光子、電子、及び他の粒子を検出するための光検出器と関連して科学的にも経済的にも重要である。放射線検出/画像化装置において、シンチレーション物質(例えば、セリウム添加シンチレータ)が用いられる。これらシンチレータ(放射線検出媒体)において、これらの応用においてそれらの価値を最大にするために、或る特性が望まれる。一般に、高シンチレーション光収量(light yield:光子収率ともいう)、高速シンチレーション運動学(減衰時間と立ち上がり時間の両方)、良好なエネルギー分解能、高精度の比例性、及び環境光被曝に対する相対的不感応性が望まれている。
図1は、本発明の一実施態様の放射線検出器(100)を示す。
Claims (13)
- 放射線検出器であって、
シンチレータ、
光源、及び
センサ
を備え、
該シンチレータは、不可視放射線を可視光に変換する能力を有し、
該センサは、該シンチレータからの変換された可視光を検出するために、該シンチレータの近傍に置かれ、かつ
該光源は、該シンチレータを光に曝すために、該シンチレータの近傍に置かれ、該光源からの該光が、該シンチレータ内の欠陥と相互作用し、該欠陥によりもたらされた該シンチレータ内のシンチレーションの干渉を最小にする、
上記放射線検出器。 - さらに、該シンチレータと該センサの間にフィルタを備えている、請求項1に記載の放射線検出器。
- 該フィルタは、該光源から該光が該センサに到達するのを実質的に防止する、請求項2に記載の放射線検出器。
- 該シンチレータは、GAGG又はGGAG物質を含んでいる、請求項1に記載の放射線検出器。
- 該光源は、該シンチレータを可視光、赤外線、紫外線、X線、又はイオン化放射線に曝す、請求項1に記載の放射線検出器。
- 該光源は、該欠陥を飽和させるために、特定の波長の該光を放出するように調整されている、請求項1に記載の放射線検出器。
- 該光源は、該シンチレータを該光に連続的に曝す、請求項1に記載の放射線検出器。
- 該光源は、シンチレーション検出の間、該シンチレータを該光に連続的に曝す、請求項1に記載の放射線検出器。
- 該光源は、該シンチレータを該光に間欠的又は周期的に曝す、請求項1に記載の放射線検出器。
- 該光源は、該シンチレータを該光のパルスに曝す、請求項1に記載の放射線検出器。
- 該光源は、シンチレーション検出の動作以前の較正フェーズの間の所定の期間、該シンチレータを該光に曝す、請求項1に記載の放射線検出器。
- さらに、該シンチレータを第2の光に曝すために該シンチレータの近傍に置かれた第2光源を備え、該第2光源からの該第2の光が、該シンチレータ内の残光欠陥と相互作用して該欠陥による残光を減らす、請求項1に記載の放射線検出器。
- 該第2光源は、残光欠陥を解放するために特定の波長の該第2の光を発光するように調整される、請求項11に記載の放射線検出器。
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US201361835072P | 2013-06-14 | 2013-06-14 | |
US61/835,072 | 2013-06-14 | ||
PCT/US2014/042099 WO2014201234A1 (en) | 2013-06-14 | 2014-06-12 | Radiation detector for imaging applications with stabilized light output |
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JP2018009371A Division JP6697490B2 (ja) | 2013-06-14 | 2018-01-24 | 安定化光出力を有する画像化応用のための放射線検出器 |
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JP2016528484A true JP2016528484A (ja) | 2016-09-15 |
JP6282729B2 JP6282729B2 (ja) | 2018-02-21 |
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JP2018009371A Active JP6697490B2 (ja) | 2013-06-14 | 2018-01-24 | 安定化光出力を有する画像化応用のための放射線検出器 |
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US (2) | US9664799B2 (ja) |
JP (2) | JP6282729B2 (ja) |
CN (1) | CN105723246B (ja) |
DE (1) | DE112014002831T5 (ja) |
WO (1) | WO2014201234A1 (ja) |
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JP2020195585A (ja) * | 2019-06-03 | 2020-12-10 | キヤノンメディカルシステムズ株式会社 | 放射線診断装置 |
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US10591617B2 (en) | 2017-05-03 | 2020-03-17 | University Of Tennessee Research Foundation | Perovskite-type halides and methods thereof |
BR112019022940A2 (pt) | 2018-02-07 | 2020-08-18 | University Of Tennessee Research Foundation | cintilador granada codopado com íon monovalente |
US10838083B2 (en) | 2018-02-14 | 2020-11-17 | University Of Tennessee Research Foundation | Alkali and alkaline earth halides and methods thereof |
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US11560515B2 (en) | 2019-04-05 | 2023-01-24 | University Of Tennessee Research Foundation | Lutetium based oxyorthosilicate scintillators codoped with transition metals |
US11339326B2 (en) | 2020-01-24 | 2022-05-24 | University Of Tennessee Research Foundation | Tl+-based and mixed halide A3B2X9-type scintillators |
CN112034505A (zh) * | 2020-08-31 | 2020-12-04 | 中国科学院西安光学精密机械研究所 | 一种闪烁体余辉精确测量装置及方法 |
US12013503B2 (en) * | 2022-10-07 | 2024-06-18 | Cintilight, Llc | Lateral crystal photodiode readouts and switched diode networks for processing nuclear events |
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JP2018087818A (ja) * | 2013-06-14 | 2018-06-07 | ユニバーシティ オブ テネシー リサーチ ファウンデーション | 安定化光出力を有する画像化応用のための放射線検出器 |
JP2020195585A (ja) * | 2019-06-03 | 2020-12-10 | キヤノンメディカルシステムズ株式会社 | 放射線診断装置 |
JP7301607B2 (ja) | 2019-06-03 | 2023-07-03 | キヤノンメディカルシステムズ株式会社 | 放射線診断装置 |
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US10996347B2 (en) | 2021-05-04 |
JP6697490B2 (ja) | 2020-05-20 |
WO2014201234A1 (en) | 2014-12-18 |
JP2018087818A (ja) | 2018-06-07 |
DE112014002831T5 (de) | 2016-03-10 |
JP6282729B2 (ja) | 2018-02-21 |
CN105723246A (zh) | 2016-06-29 |
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