WO2009008102A1 - Ｘ線ｃｔ装置 - Google Patents

Ｘ線ｃｔ装置 Download PDF

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Publication number
WO2009008102A1
WO2009008102A1 PCT/JP2007/074695 JP2007074695W WO2009008102A1 WO 2009008102 A1 WO2009008102 A1 WO 2009008102A1 JP 2007074695 W JP2007074695 W JP 2007074695W WO 2009008102 A1 WO2009008102 A1 WO 2009008102A1
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WO
WIPO (PCT)
Prior art keywords
composition
identification
ray
absorption factor
ray absorption
Prior art date
Application number
PCT/JP2007/074695
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English (en)
French (fr)
Inventor
Keisuke Yamakawa
Hironori Ueki
Original Assignee
Hitachi Medical 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 Hitachi Medical Corporation filed Critical Hitachi Medical Corporation
Priority to US12/668,244 priority Critical patent/US7924969B2/en
Priority to CN200780053691XA priority patent/CN101686824B/zh
Publication of WO2009008102A1 publication Critical patent/WO2009008102A1/ja

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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
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/405—Source units specially adapted to modify characteristics of the beam during the data acquisition process
    • 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]
    • A61B6/032—Transmission computed tomography [CT]
    • 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
    • A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
    • A61B6/4208—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
    • A61B6/4241—Arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using energy resolving detectors, e.g. photon counting
    • 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
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • 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
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

　デュアルエネルギーＸ線ＣＴ装置において識別マップを自動的に最適化することで識別の高精度化および線量の低減を実現する。 　デュアルエネルギーＸ線ＣＴ装置で取得したＸ線吸収率を、Ｘ線吸収率と被写体の組成との関係を示す識別マップにあてはめ、被写体組成を識別する。識別マップ作成部は、被写体の撮影部位、管電圧等の撮影条件に基づき、各組成の存在確率を複数種類のＸ線吸収率値の組み合わせごとに算出し、存在確率が最も大きい組成を、Ｘ線吸収率値の組み合わせに対応する組成と決定することにより、識別マップを作成する。これにより、撮影条件ごとに識別マップを作成することができるため、組成識別の高精度化を実現できる。
PCT/JP2007/074695 2007-07-11 2007-12-21 Ｘ線ｃｔ装置 WO2009008102A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/668,244 US7924969B2 (en) 2007-07-11 2007-12-21 X ray CT system
CN200780053691XA CN101686824B (zh) 2007-07-11 2007-12-21 X射线ct装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-181725 2007-07-11
JP2007181725A JP5105589B2 (ja) 2007-07-11 2007-07-11 Ｘ線ｃｔ装置

Publications (1)

Publication Number Publication Date
WO2009008102A1 true WO2009008102A1 (ja) 2009-01-15

Family

ID=40228297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/074695 WO2009008102A1 (ja) 2007-07-11 2007-12-21 Ｘ線ｃｔ装置

Country Status (4)

Country Link
US (1) US7924969B2 (ja)
JP (1) JP5105589B2 (ja)
CN (1) CN101686824B (ja)
WO (1) WO2009008102A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010167165A (ja) * 2009-01-26 2010-08-05 Ge Medical Systems Global Technology Co Llc Ｘ線ｃｔ装置
JP2011156302A (ja) * 2010-02-03 2011-08-18 Kyoto Univ Ｘ線ｃｔ画像処理方法，ｘ線ｃｔプログラムおよび該プログラムが搭載されたｘ線ｃｔ装置

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US8553959B2 (en) * 2008-03-21 2013-10-08 General Electric Company Method and apparatus for correcting multi-modality imaging data
JP4727737B2 (ja) * 2009-02-24 2011-07-20 三菱重工業株式会社 放射線治療装置制御装置および目的部位位置計測方法
JP5442530B2 (ja) * 2010-05-24 2014-03-12 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 画像処理装置、画像表示装置およびプログラム並びにｘ線ｃｔ装置
CN103096802B (zh) * 2010-09-07 2015-12-16 株式会社日立医疗器械 X射线ct装置
US20120166117A1 (en) * 2010-10-29 2012-06-28 Xia Llc Method and apparatus for evaluating superconducting tunnel junction detector noise versus bias voltage
US8737567B2 (en) * 2011-01-27 2014-05-27 Medtronic Navigation, Inc. Image acquisition optimization
JP6026145B2 (ja) * 2012-06-05 2016-11-16 東芝メディカルシステムズ株式会社 Ｘ線ｃｔ装置
US9373159B2 (en) * 2012-06-18 2016-06-21 University Health Network Method and system for compressed sensing image reconstruction
US9354185B2 (en) * 2012-12-21 2016-05-31 Advanced Micro Devices, Inc. 3D imaging with multiple irradiation frequencies
JP6747787B2 (ja) 2014-08-22 2020-08-26 キヤノンメディカルシステムズ株式会社 光子計数型ｘ線ｃｔ装置
CN106659457B (zh) * 2014-09-11 2020-04-10 株式会社日立制作所 光子计数ct装置以及估计受辐射量计算方法
US10117628B2 (en) * 2014-10-01 2018-11-06 Toshiba Medical Systems Corporation Photon counting apparatus
US9964499B2 (en) * 2014-11-04 2018-05-08 Toshiba Medical Systems Corporation Method of, and apparatus for, material classification in multi-energy image data
US10213172B2 (en) 2015-02-20 2019-02-26 General Electric Company Imaging method and system of tube voltage and current optimization
EP3287774B8 (en) * 2015-04-20 2020-12-02 Job Corporation Data processing device for x-ray examination, and computer implemented data processing method
US10881358B2 (en) * 2015-10-05 2021-01-05 Koninklijke Philips N.V. Tomosynthesis apparatus and method for characterizing a lesion in a breast
CN105911075B (zh) * 2016-05-23 2019-07-16 奕瑞影像科技（太仓）有限公司 一种x射线累积大剂量的试验方法及系统
WO2018153382A1 (zh) * 2017-02-27 2018-08-30 北京纳米维景科技有限公司 适应大视野要求的静态实时ct成像系统及其成像方法
EP3627145B1 (en) 2017-05-16 2024-01-10 Job Corporation Data processing device and data processing method for x-ray inspection, and x-ray inspecting device with said device mounted therein
US10813205B2 (en) * 2018-01-12 2020-10-20 Accuray Incorporated Detecting motion by using a low dose x-ray image
JP7219888B2 (ja) * 2019-02-14 2023-02-09 プリズマティック、センサーズ、アクチボラグ Ｘ線画像システムの較正
CN110192885A (zh) * 2019-05-30 2019-09-03 上海联影医疗科技有限公司 基于x光成像的剂量确定方法、装置、设备和存储介质

Citations (6)

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JP2004147863A (ja) * 2002-10-30 2004-05-27 Aloka Co Ltd Ｘ線骨密度測定装置
JP2006520223A (ja) * 2003-03-14 2006-09-07 シーメンス　アクチエンゲゼルシヤフト 画像化方法
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JP2006520223A (ja) * 2003-03-14 2006-09-07 シーメンス　アクチエンゲゼルシヤフト 画像化方法
JP2007508040A (ja) * 2003-10-10 2007-04-05 シエーリング　アクチエンゲゼルシヤフト Ｘ線不透過性要素を含む少なくとも１つの被検体での画像形成用のｘ線装置及びｘ線コントラスト方法並びにｘ線装置の使用
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JP2007111526A (ja) * 2005-10-17 2007-05-10 Siemens Ag Ｘ線画像内の物質のセグメンテーション方法および装置

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010167165A (ja) * 2009-01-26 2010-08-05 Ge Medical Systems Global Technology Co Llc Ｘ線ｃｔ装置
JP2011156302A (ja) * 2010-02-03 2011-08-18 Kyoto Univ Ｘ線ｃｔ画像処理方法，ｘ線ｃｔプログラムおよび該プログラムが搭載されたｘ線ｃｔ装置

Also Published As

Publication number Publication date
JP5105589B2 (ja) 2012-12-26
US7924969B2 (en) 2011-04-12
CN101686824A (zh) 2010-03-31
US20100226474A1 (en) 2010-09-09
CN101686824B (zh) 2012-11-28
JP2009017984A (ja) 2009-01-29

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