WO2011073863A1 - Computed tomography apparatus - Google Patents

Computed tomography apparatus Download PDF

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Publication number
WO2011073863A1
WO2011073863A1 PCT/IB2010/055712 IB2010055712W WO2011073863A1 WO 2011073863 A1 WO2011073863 A1 WO 2011073863A1 IB 2010055712 W IB2010055712 W IB 2010055712W WO 2011073863 A1 WO2011073863 A1 WO 2011073863A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection values
radiation
modulation
computed tomography
weight
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2010/055712
Other languages
English (en)
French (fr)
Inventor
Thomas Koehler
Roland Proksa
Ewald Roessl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips Electronics NV
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 Philips Intellectual Property and Standards GmbH, Koninklijke Philips Electronics NV filed Critical Philips Intellectual Property and Standards GmbH
Priority to CN201080057105.0A priority Critical patent/CN102655810B/zh
Priority to US13/509,840 priority patent/US8861674B2/en
Priority to EP10807671.2A priority patent/EP2512345B1/en
Priority to BR112012014172A priority patent/BR112012014172A2/pt
Priority to JP2012543952A priority patent/JP5727508B2/ja
Publication of WO2011073863A1 publication Critical patent/WO2011073863A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A61B6/46—Arrangements for interfacing with the operator or the patient
    • A61B6/467—Arrangements for interfacing with the operator or the patient characterised by special input means
    • A61B6/469—Arrangements for interfacing with the operator or the patient characterised by special input means for selecting a region of interest [ROI]
    • 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
    • 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
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T12/00—Tomographic reconstruction from projections
    • G06T12/10—Image preprocessing, e.g. calibration, positioning of sources or scatter correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S378/00—X-ray or gamma ray systems or devices
    • Y10S378/901—Computer tomography program or processor

Definitions

  • a radiation source for generating modulated radiation traversing the object in the imaging region
  • I 0 denote the mean number of photons emitted towards a detector pixel. Due to the attenuation of the beam by the object, only / photons reach the detector pixel on average. Still the number of photons follows the Poisson statistics. Thus, the variance of the detected signal is / .
  • the modulation weights are preferentially algorithmically used like a cardiac weight in a gated cardiac reconstruction to achieve an improved image quality.
  • the modulation weight preferentially never becomes zero, but the modulation depth of the modulation weight is preferentially the same as a modulation depth of the tube current, if the radiation source is an X-ray tube.
  • reconstruction unit can be performed by a single unit or by any other number of different units.
  • the control of the computed tomography apparatus in accordance with the computed tomography method and/or the control of the imaging apparatus in accordance with the imaging method can be implemented as program code means of a computer program and/or as dedicated hardware.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Pathology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Biophysics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Optics & Photonics (AREA)
  • Public Health (AREA)
  • Theoretical Computer Science (AREA)
  • Pulmonology (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Immunology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
PCT/IB2010/055712 2009-12-15 2010-12-10 Computed tomography apparatus Ceased WO2011073863A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201080057105.0A CN102655810B (zh) 2009-12-15 2010-12-10 计算机断层摄影装置
US13/509,840 US8861674B2 (en) 2009-12-15 2010-12-10 Computed tomography apparatus
EP10807671.2A EP2512345B1 (en) 2009-12-15 2010-12-10 Computed tomography apparatus
BR112012014172A BR112012014172A2 (pt) 2009-12-15 2010-12-10 aparelho de tomografia computadorizada para a geração de imagens de um objeto, aparelho de geração de imagens, método de tomografia computadorizada para a geração de imagens de um objeto, método de geração de imagens, programa de computador de tomografia computadorizada e programa de computador de geração de imagens
JP2012543952A JP5727508B2 (ja) 2009-12-15 2010-12-10 コンピュータ断層撮影装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP09179186.3 2009-12-15
EP09179186A EP2335593A1 (en) 2009-12-15 2009-12-15 Computed tomography apparatus

Publications (1)

Publication Number Publication Date
WO2011073863A1 true WO2011073863A1 (en) 2011-06-23

Family

ID=42129613

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2010/055712 Ceased WO2011073863A1 (en) 2009-12-15 2010-12-10 Computed tomography apparatus

Country Status (6)

Country Link
US (1) US8861674B2 (https=)
EP (2) EP2335593A1 (https=)
JP (1) JP5727508B2 (https=)
CN (1) CN102655810B (https=)
BR (1) BR112012014172A2 (https=)
WO (1) WO2011073863A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013085960A (ja) * 2011-10-19 2013-05-13 Toshiba Corp 画像再構成方法及び画像再構成システム
JP2014100574A (ja) * 2012-11-20 2014-06-05 Inst Nuclear Energy Research Rocaec 三次元レイトレーシングの投影方法
US20150379694A1 (en) * 2013-02-21 2015-12-31 Koninklijke Philips N.V. Structure propagation restoration for spectral ct

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8903152B2 (en) * 2012-06-29 2014-12-02 General Electric Company Methods and systems for enhanced tomographic imaging
FI124596B (fi) * 2012-11-23 2014-10-31 Planmed Oy Lääketieteellinen tietokonetomografiakuvauslaitteisto
CN104768468B (zh) * 2012-11-30 2018-01-05 株式会社日立制作所 X射线ct装置以及其断层图像拍摄方法
WO2015108097A1 (ja) * 2014-01-20 2015-07-23 株式会社 日立メディコ Ｘ線ｃｔ装置、画像処理装置、及び画像再構成方法
US10255697B2 (en) * 2014-11-20 2019-04-09 Koninklijke Philips N.V. Method for generation of synthetic mammograms from tomosynthesis data
EP3320519A1 (en) * 2015-06-30 2018-05-16 Koninklijke Philips N.V. Device and method for processing computer tomography imaging data
JP6858259B2 (ja) * 2016-12-21 2021-04-14 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． ショートスキャン偏心検出器ｘ線トモグラフィのための冗長重み付け
WO2019033390A1 (en) * 2017-08-18 2019-02-21 Shenzhen United Imaging Healthcare Co., Ltd. SYSTEM AND METHOD FOR IMAGE RECONSTRUCTION
US12406410B2 (en) * 2017-08-18 2025-09-02 Shanghai United Imaging Healthcare Co., Ltd. System and method for reconstructing an image
CN107928694B (zh) * 2017-12-05 2020-11-03 上海联影医疗科技有限公司 Ct剂量调制方法、装置、ct扫描方法及ct系统
CN109523605A (zh) * 2018-11-29 2019-03-26 上海联影医疗科技有限公司 一种ct图像重建的方法、装置、设备及介质

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US5696807A (en) * 1996-09-05 1997-12-09 General Electric Company Methods and apparatus for modulating x-ray tube current
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US20050089135A1 (en) * 2003-10-27 2005-04-28 Toth Thomas L. System and method of x-ray flux management control
US20070147579A1 (en) 2005-12-23 2007-06-28 De Man Bruno K B Method and system for radiographic imaging with organ-based radiation profile prescription
US20090252286A1 (en) * 2008-04-04 2009-10-08 Kabushiki Kaisha Toshiba X-ray ct apparatus and control method of x-ray ct apparatus

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CN100536777C (zh) * 2004-04-13 2009-09-09 皇家飞利浦电子股份有限公司 用于计算机断层摄影的动态剂量控制
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US20040076265A1 (en) * 2002-10-21 2004-04-22 Koninklijke Philips Electronics N. V. Conebeam computed tomography imaging
US20050089135A1 (en) * 2003-10-27 2005-04-28 Toth Thomas L. System and method of x-ray flux management control
US20070147579A1 (en) 2005-12-23 2007-06-28 De Man Bruno K B Method and system for radiographic imaging with organ-based radiation profile prescription
US20090252286A1 (en) * 2008-04-04 2009-10-08 Kabushiki Kaisha Toshiba X-ray ct apparatus and control method of x-ray ct apparatus

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013085960A (ja) * 2011-10-19 2013-05-13 Toshiba Corp 画像再構成方法及び画像再構成システム
JP2014100574A (ja) * 2012-11-20 2014-06-05 Inst Nuclear Energy Research Rocaec 三次元レイトレーシングの投影方法
US20150379694A1 (en) * 2013-02-21 2015-12-31 Koninklijke Philips N.V. Structure propagation restoration for spectral ct
US10282820B2 (en) * 2013-02-21 2019-05-07 Koninklijke Philips N.V. Structure propagation restoration for spectral CT

Also Published As

Publication number Publication date
CN102655810A (zh) 2012-09-05
EP2512345B1 (en) 2020-05-27
EP2335593A1 (en) 2011-06-22
EP2512345A1 (en) 2012-10-24
US8861674B2 (en) 2014-10-14
CN102655810B (zh) 2015-12-02
US20120250821A1 (en) 2012-10-04
BR112012014172A2 (pt) 2016-05-17
JP5727508B2 (ja) 2015-06-03
JP2013513452A (ja) 2013-04-22

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