JP6215825B2 - 撮像システムおよび放射線検出方法 - Google Patents
撮像システムおよび放射線検出方法 Download PDFInfo
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- JP6215825B2 JP6215825B2 JP2014522175A JP2014522175A JP6215825B2 JP 6215825 B2 JP6215825 B2 JP 6215825B2 JP 2014522175 A JP2014522175 A JP 2014522175A JP 2014522175 A JP2014522175 A JP 2014522175A JP 6215825 B2 JP6215825 B2 JP 6215825B2
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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
- G01T1/202—Measuring radiation intensity with scintillation detectors the detector being a crystal
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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
- G01T1/2006—Measuring radiation intensity with scintillation detectors using a combination of a scintillator and photodetector which measures the means radiation intensity
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7767—Chalcogenides
- C09K11/7769—Oxides
- C09K11/7771—Oxysulfides
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
-
- 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
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K4/00—Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
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- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Biochemistry (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (AREA)
- Theoretical Computer Science (AREA)
- Analytical Chemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Luminescent Compositions (AREA)
- Conversion Of X-Rays Into Visible Images (AREA)
Description
により決定されることができる。ここで、Nは、モルppmである。すると、絶対光収率は、
で与えられる。さらに別の例では、Tbの量は、別の所定の特性に基づかれる。
Claims (15)
- 撮像システムであって、
放射線源と、
放射線感知検出器アレイとを有し、
前記放射線感知検出器アレイが、
シンチレータアレイと、
前記シンチレータアレイに光学的に結合される光検出器アレイとを含み、
前記シンチレータアレイが、Gd202S:Pr,Tb,Ceで表される組成を有し、前記組成Gd202S:Pr,Tb,CeにおけるTb3+の量が、50モルppm以下である、撮像システム。 - 前記Gd202S:Pr,Tb,Ceが、前記シンチレータの光出力が所定の減衰時間で所定の光出力閾値を下回るような量のTb3+を含む、請求項1に記載の撮像システム。
- 前記Tb3+の量が、10モルppm以下である、請求項2に記載の撮像システム。
- 前記光出力が、およそ46,700photon/MeVである、請求項2又は3に記載の撮像システム。
- 前記シンチレータアレイが、複合材料を含む、請求項1乃至4のいずれかに記載の撮像システム。
- 前記シンチレータアレイが、セラミック材料を含む、請求項1乃至4のいずれかに記載の撮像システム。
- 前記シンチレータアレイの光効率は、前記シンチレータアレイが前記Tb3+を含まない構成と比べておよそ33パーセント大きい、請求項1乃至6のいずれかに記載の撮像システム。
- 前記撮像システムが、コンピュータ断層撮影スキャナである、請求項1乃至7のいずれかに記載の撮像システム。
- 撮像システムの放射線感知検出器アレイを用いて放射線を検出するステップを有する方法において、
前記放射線感知検出器アレイが、Gd202S:Pr,Tb,Ceで表される組成を有するシンチレータアレイを含み、前記組成Gd202S:Pr,Tb,CeにおけるTb3+の量が、50モルppm以下である、方法。 - 前記Gd202S:Pr,Tb,Ceが、前記シンチレータの光出力が、所定の減衰時間で所定の光出力閾値を下回る量のTb3+を含む、請求項9に記載の方法。
- 前記Tb3+の量が、10モルppm以下である、請求項10に記載の方法。
- 前記光出力が、およそ46,700photon/MeVである、請求項10に記載の方法。
- 前記シンチレータアレイが、複合材料又はセラミック材料の1つを含む、請求項9乃至12のいずれかに記載の方法。
- 前記シンチレータアレイの光効率は、前記シンチレータアレイが前記Tb3+を含まない構成と比べておよそ33パーセント大きい、請求項9乃至13のいずれかに記載の方法。
- 前記撮像システムが、コンピュータ断層撮影スキャナである、請求項9乃至14のいずれかに記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161512452P | 2011-07-28 | 2011-07-28 | |
US61/512,452 | 2011-07-28 | ||
PCT/IB2012/053372 WO2013014557A1 (en) | 2011-07-28 | 2012-07-03 | Terbium based detector scintillator |
Publications (3)
Publication Number | Publication Date |
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JP2014529060A JP2014529060A (ja) | 2014-10-30 |
JP2014529060A5 JP2014529060A5 (ja) | 2015-08-20 |
JP6215825B2 true JP6215825B2 (ja) | 2017-10-18 |
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JP2014522175A Active JP6215825B2 (ja) | 2011-07-28 | 2012-07-03 | 撮像システムおよび放射線検出方法 |
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US (1) | US9322935B2 (ja) |
EP (1) | EP2737340B1 (ja) |
JP (1) | JP6215825B2 (ja) |
CN (1) | CN103718063B (ja) |
RU (1) | RU2605518C2 (ja) |
WO (1) | WO2013014557A1 (ja) |
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CN105738939B (zh) * | 2016-04-01 | 2019-03-08 | 西安电子科技大学 | 基于碳化硅PIN二极管结构的β辐照闪烁体探测器 |
CN115932932A (zh) * | 2022-11-03 | 2023-04-07 | 宁波虔东科浩光电科技有限公司 | 一种闪烁体探测阵列的信号处理方法及成像设备 |
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US3974389A (en) | 1974-11-20 | 1976-08-10 | Gte Sylvania Incorporated | Terbium-activated rare earth oxysulfide X-ray phosphors |
IL80333A (en) * | 1985-12-30 | 1991-01-31 | Gen Electric | Radiation detector employing solid state scintillator material and preparation methods therefor |
JP2928677B2 (ja) * | 1991-06-21 | 1999-08-03 | 株式会社東芝 | X線検出器およびx線検査装置 |
DE4402260A1 (de) | 1994-01-26 | 1995-07-27 | Siemens Ag | Verfahren zur Herstellung eines Leuchtstoffs mit hoher Transluzenz |
US5882547A (en) * | 1996-08-16 | 1999-03-16 | General Electric Company | X-ray scintillators and devices incorporating them |
JP3777486B2 (ja) | 1997-07-08 | 2006-05-24 | 株式会社日立メディコ | 蛍光体及びそれを用いた放射線検出器及びx線ct装置 |
JP3741302B2 (ja) * | 1998-05-06 | 2006-02-01 | 日立金属株式会社 | シンチレータ |
RU2350579C2 (ru) * | 2004-05-17 | 2009-03-27 | Федеральное Государственное Унитарное Предприятие "Научно-Исследовательский И Технологический Институт Оптического Материаловедения" Всероссийского Научного Центра "Государственный Оптический Институт Им. С.И.Вавилова" | Флуоресцентная керамика |
US7282713B2 (en) * | 2004-06-10 | 2007-10-16 | General Electric Company | Compositions and methods for scintillator arrays |
RU2410407C2 (ru) * | 2005-04-19 | 2011-01-27 | Конинклейке Филипс Электроникс Н.В. | СПОСОБ ПОЛУЧЕНИЯ Gd2O2S:Pr С ОЧЕНЬ КРАТКОВРЕМЕННЫМ ПОСЛЕСВЕЧЕНИЕМ ДЛЯ КОМПЬЮТЕРНОЙ ТОМОГРАФИИ |
WO2007004099A1 (en) * | 2005-07-05 | 2007-01-11 | Philips Intellectual Property & Standards Gmbh | Gd2o2s: pr for ct with a very short afterglow due to the use of yb as a scavenger for eu |
EP1912916A1 (en) * | 2005-07-25 | 2008-04-23 | Saint-Gobain Ceramics and Plastics, Inc. | Rare earth oxysulfide scintillator and methods for producing same |
JP2009523689A (ja) | 2006-01-18 | 2009-06-25 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 単軸加熱プレス及びフラックス助剤を用いるgosセラミックの生産方法 |
EP2054713A2 (en) * | 2006-08-15 | 2009-05-06 | Philips Intellectual Property & Standards GmbH | Method of measuring and/or judging the afterglow in ceramic materials and detector |
ATE534617T1 (de) | 2006-12-20 | 2011-12-15 | Koninkl Philips Electronics Nv | Heissaxialpressverfahren |
US8294112B2 (en) | 2008-08-08 | 2012-10-23 | Koninklijke Philips Electronics N.V. | Composite scintillator including a micro-electronics photo-resist |
WO2010148060A1 (en) * | 2009-06-17 | 2010-12-23 | The Regents Of The University Of Michigan | Photodiode and other sensor structures in flat-panel x-ray imagers and method for improving topological uniformity of the photodiode and other sensor structures in flat-panel x-ray imagers based on thin-film electronics |
JP2012185123A (ja) * | 2011-03-08 | 2012-09-27 | Sony Corp | 放射線撮像装置および放射線撮像装置の製造方法 |
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2012
- 2012-07-03 CN CN201280037639.6A patent/CN103718063B/zh active Active
- 2012-07-03 WO PCT/IB2012/053372 patent/WO2013014557A1/en active Application Filing
- 2012-07-03 RU RU2014107693/28A patent/RU2605518C2/ru not_active IP Right Cessation
- 2012-07-03 US US14/234,639 patent/US9322935B2/en active Active
- 2012-07-03 JP JP2014522175A patent/JP6215825B2/ja active Active
- 2012-07-03 EP EP12737351.2A patent/EP2737340B1/en active Active
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Publication number | Publication date |
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US20140177783A1 (en) | 2014-06-26 |
EP2737340A1 (en) | 2014-06-04 |
US9322935B2 (en) | 2016-04-26 |
RU2014107693A (ru) | 2015-09-10 |
CN103718063B (zh) | 2017-04-26 |
EP2737340B1 (en) | 2019-04-24 |
CN103718063A (zh) | 2014-04-09 |
RU2605518C2 (ru) | 2016-12-20 |
WO2013014557A1 (en) | 2013-01-31 |
JP2014529060A (ja) | 2014-10-30 |
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