WO2008139517A1 - 光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置 - Google Patents

光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置 Download PDF

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Publication number
WO2008139517A1
WO2008139517A1 PCT/JP2007/059179 JP2007059179W WO2008139517A1 WO 2008139517 A1 WO2008139517 A1 WO 2008139517A1 JP 2007059179 W JP2007059179 W JP 2007059179W WO 2008139517 A1 WO2008139517 A1 WO 2008139517A1
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WO
WIPO (PCT)
Prior art keywords
fitting
discriminatory
parameters
photon detector
calculating method
Prior art date
Application number
PCT/JP2007/059179
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English (en)
French (fr)
Inventor
Atsushi Ohtani
Original Assignee
Shimadzu Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shimadzu Corporation filed Critical Shimadzu Corporation
Priority to JP2009513863A priority Critical patent/JP4605303B2/ja
Priority to CN200780052145.4A priority patent/CN101627321A/zh
Priority to PCT/JP2007/059179 priority patent/WO2008139517A1/ja
Priority to US12/597,814 priority patent/US8450697B2/en
Priority to DE112007003474T priority patent/DE112007003474T5/de
Publication of WO2008139517A1 publication Critical patent/WO2008139517A1/ja

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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
    • G01T1/161—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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • 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
    • G01T1/1648—Ancillary equipment for scintillation cameras, e.g. reference markers, devices for removing motion artifacts, calibration devices
    • 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

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Molecular Biology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nuclear Medicine (AREA)
  • Measurement Of Radiation (AREA)

Abstract

　本発明の光子検出器の弁別パラメータ算出方法は、出力波形信号を蓄積したデータを対象にして、エネルギーレシオに対するカウント数の波形を近似する二種類のフィッティング関数を適用し、両フィッティング関数のフィッティングパラメータを算出し、両フィッティングパラメータに基づいて、両フィッティング関数のピークの１／ｎとなるカウント数を求めるとともに、そのカウント数に対応する両フィッティング関数のエネルギーレシオの値を弁別パラメータｋとして算出する。このように第1の光子検出素子３５及び第２の光子検出素子３７がどのようなものであっても、フィッティング関数でフィッティングした後に、フィッティングパラメータに基づいて弁別パラメータｋを自動的に算出するので、高精度で弁別パラメータを算出することができる。したがって、光子検出器１７の性能を充分に引き出すことができる弁別パラメータｋを比較的容易に求めることができる。
PCT/JP2007/059179 2007-04-27 2007-04-27 光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置 WO2008139517A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2009513863A JP4605303B2 (ja) 2007-04-27 2007-04-27 光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置
CN200780052145.4A CN101627321A (zh) 2007-04-27 2007-04-27 光子检测器的辨别参数计算方法及使用该计算方法的核医学诊断装置
PCT/JP2007/059179 WO2008139517A1 (ja) 2007-04-27 2007-04-27 光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置
US12/597,814 US8450697B2 (en) 2007-04-27 2007-04-27 Discrimination parameter calculation method for photon detectors, and nuclear medicine diagnostic apparatus using same
DE112007003474T DE112007003474T5 (de) 2007-04-27 2007-04-27 Diskriminierungsparameterberechnungsverfahren für Photonendetektoren und Nuklearmedizindiagnosevorrichtung, die letzteres verwendet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/059179 WO2008139517A1 (ja) 2007-04-27 2007-04-27 光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置

Publications (1)

Publication Number Publication Date
WO2008139517A1 true WO2008139517A1 (ja) 2008-11-20

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PCT/JP2007/059179 WO2008139517A1 (ja) 2007-04-27 2007-04-27 光子検出器の弁別パラメータ算出方法及びそれを用いた核医学診断装置

Country Status (5)

Country Link
US (1) US8450697B2 (ja)
JP (1) JP4605303B2 (ja)
CN (1) CN101627321A (ja)
DE (1) DE112007003474T5 (ja)
WO (1) WO2008139517A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017207482A (ja) * 2016-05-12 2017-11-24 東芝メディカルシステムズ株式会社 医用画像診断装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102662189B (zh) * 2012-04-13 2013-11-27 北京华泰诺安科技有限公司 一种基于计数管的辐射测试的分析方法
US9490910B2 (en) 2013-03-15 2016-11-08 Fairfield Industries Incorporated High-bandwidth underwater data communication system
US9490911B2 (en) 2013-03-15 2016-11-08 Fairfield Industries Incorporated High-bandwidth underwater data communication system
US10488537B2 (en) 2016-06-30 2019-11-26 Magseis Ff Llc Seismic surveys with optical communication links

Citations (5)

* Cited by examiner, † Cited by third party
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JPH04175684A (ja) * 1990-11-08 1992-06-23 Hitachi Medical Corp ポジトロンｃｔ装置
JP2004279057A (ja) * 2003-03-12 2004-10-07 Natl Inst Of Radiological Sciences ３次元放射線位置検出器
JP2007093376A (ja) * 2005-09-28 2007-04-12 Natl Inst Of Radiological Sciences 放射線位置検出方法及び装置
WO2007043137A1 (ja) * 2005-10-04 2007-04-19 Shimadzu Corporation 核医学診断装置
JP2007101191A (ja) * 2005-09-30 2007-04-19 Shimadzu Corp 放射線検出器

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Publication number Priority date Publication date Assignee Title
JP2000056023A (ja) 1998-08-06 2000-02-25 Japan Science & Technology Corp 深さ方向の情報を得ることができるｐｅｔ用検出器
US6297506B1 (en) * 2000-03-23 2001-10-02 John W. Young System and method for reducing pile-up errors in multi-crystal gamma ray detector applications
EP1852716A3 (en) * 2002-10-07 2007-11-14 Hitachi, Ltd. Radiation detector, radiation detector element, and radiation imaging apparatus
JP4110994B2 (ja) 2003-02-10 2008-07-02 株式会社島津製作所 放射線検出器
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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04175684A (ja) * 1990-11-08 1992-06-23 Hitachi Medical Corp ポジトロンｃｔ装置
JP2004279057A (ja) * 2003-03-12 2004-10-07 Natl Inst Of Radiological Sciences ３次元放射線位置検出器
JP2007093376A (ja) * 2005-09-28 2007-04-12 Natl Inst Of Radiological Sciences 放射線位置検出方法及び装置
JP2007101191A (ja) * 2005-09-30 2007-04-19 Shimadzu Corp 放射線検出器
WO2007043137A1 (ja) * 2005-10-04 2007-04-19 Shimadzu Corporation 核医学診断装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YOSHIDA E.: "Dai 1-bu Jisedai PET Sochi Kaihatsu Kenkyo no Shinchoku Jokyo (6) Kenshutsuki Soshi Kosei", NIRS-M (NATL. INST. RADIOL. SCI.), no. 172, 2004, pages 51 - 55, XP003023927 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017207482A (ja) * 2016-05-12 2017-11-24 東芝メディカルシステムズ株式会社 医用画像診断装置

Also Published As

Publication number Publication date
JPWO2008139517A1 (ja) 2010-07-29
CN101627321A (zh) 2010-01-13
US8450697B2 (en) 2013-05-28
US20100133443A1 (en) 2010-06-03
DE112007003474T5 (de) 2010-04-15
JP4605303B2 (ja) 2011-01-05

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