WO2009069215A1 - 断層撮影装置 - Google Patents

断層撮影装置 Download PDF

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Publication number
WO2009069215A1
WO2009069215A1 PCT/JP2007/073090 JP2007073090W WO2009069215A1 WO 2009069215 A1 WO2009069215 A1 WO 2009069215A1 JP 2007073090 W JP2007073090 W JP 2007073090W WO 2009069215 A1 WO2009069215 A1 WO 2009069215A1
Authority
WO
WIPO (PCT)
Prior art keywords
attenuation
calculating section
section
correction function
transmission
Prior art date
Application number
PCT/JP2007/073090
Other languages
English (en)
French (fr)
Inventor
Hiroshi Oohara
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 JP2009543619A priority Critical patent/JP4858617B2/ja
Priority to CN200780101750.6A priority patent/CN101877998B/zh
Priority to PCT/JP2007/073090 priority patent/WO2009069215A1/ja
Priority to US12/741,256 priority patent/US8611625B2/en
Publication of WO2009069215A1 publication Critical patent/WO2009069215A1/ja

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Classifications

    • 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
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
    • 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

　この発明の断層撮影装置は、演算処理部内に減弱量算出調整部とフィルタ長算出部と減弱補正関数算出部と透過長算出部とを備えているので、ビームハードニング補正がなされた断層画像を取得することができ、繰り返し法を用いずにビームハードニング補正を行うことができる。また、Ｘ線検出器で測定された２つの透過長での測定減弱量と、これら透過長で算出調整された算出減弱量との比を２つの透過長間で互いに結ぶ一次式で、減弱補正関数を一次関数で近似して表すことで、減弱補正関数算出部は減弱補正関数を算出する。
PCT/JP2007/073090 2007-11-29 2007-11-29 断層撮影装置 WO2009069215A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009543619A JP4858617B2 (ja) 2007-11-29 2007-11-29 断層撮影装置
CN200780101750.6A CN101877998B (zh) 2007-11-29 2007-11-29 断层摄影装置
PCT/JP2007/073090 WO2009069215A1 (ja) 2007-11-29 2007-11-29 断層撮影装置
US12/741,256 US8611625B2 (en) 2007-11-29 2007-11-29 Tomographic apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/073090 WO2009069215A1 (ja) 2007-11-29 2007-11-29 断層撮影装置

Publications (1)

Publication Number Publication Date
WO2009069215A1 true WO2009069215A1 (ja) 2009-06-04

Family

ID=40678131

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/073090 WO2009069215A1 (ja) 2007-11-29 2007-11-29 断層撮影装置

Country Status (4)

Country Link
US (1) US8611625B2 (ja)
JP (1) JP4858617B2 (ja)
CN (1) CN101877998B (ja)
WO (1) WO2009069215A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013244188A (ja) * 2012-05-25 2013-12-09 Asahi Roentgen Kogyo Kk ビームハードニング補正装置、ビームハードニング補正方法、及びｘ線撮影装置
JP2019122553A (ja) * 2018-01-16 2019-07-25 キヤノンメディカルシステムズ株式会社 Ｘ線ｃｔ装置及びスキャン計画装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5745054B2 (ja) * 2011-07-12 2015-07-08 株式会社日立メディコ Ｘ線ｃｔ装置、計算装置およびｘ線ｃｔ装置のメンテナンス方法
US10357221B2 (en) * 2014-08-22 2019-07-23 Samsung Electronics Co., Ltd. Anatomical imaging system with improved detector calibration process
WO2020028896A1 (en) 2018-08-03 2020-02-06 Neurologica Corporation Ai-based rendered volume auto-correction for fixed and mobile x-ray imaging modalities and other imaging modalities

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006068397A (ja) * 2004-09-03 2006-03-16 Canon Inc 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833698A (en) * 1986-02-24 1989-05-23 Exxon Research And Engineering Company Apparatus for three dimensional tomography utilizing an electro-optic x-ray detector
WO2000065330A1 (fr) * 1999-04-21 2000-11-02 Hamamatsu Photonics K.K. Procede d'analyse optique de milieu non homogene
CN1296011C (zh) 2003-07-16 2007-01-24 东软飞利浦医疗设备系统有限责任公司 一种ct机射束硬化的校正方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006068397A (ja) * 2004-09-03 2006-03-16 Canon Inc 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013244188A (ja) * 2012-05-25 2013-12-09 Asahi Roentgen Kogyo Kk ビームハードニング補正装置、ビームハードニング補正方法、及びｘ線撮影装置
JP2019122553A (ja) * 2018-01-16 2019-07-25 キヤノンメディカルシステムズ株式会社 Ｘ線ｃｔ装置及びスキャン計画装置
JP7005354B2 (ja) 2018-01-16 2022-01-21 キヤノンメディカルシステムズ株式会社 Ｘ線ｃｔ装置及びスキャン計画装置

Also Published As

Publication number Publication date
CN101877998B (zh) 2012-02-22
JPWO2009069215A1 (ja) 2011-04-07
US20100272319A1 (en) 2010-10-28
US8611625B2 (en) 2013-12-17
CN101877998A (zh) 2010-11-03
JP4858617B2 (ja) 2012-01-18

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