IL127808A - Correction algorithm for bone-induced spectral artifacts in computed tomograph imaging - Google Patents

Correction algorithm for bone-induced spectral artifacts in computed tomograph imaging

Info

Publication number
IL127808A
IL127808A IL12780898A IL12780898A IL127808A IL 127808 A IL127808 A IL 127808A IL 12780898 A IL12780898 A IL 12780898A IL 12780898 A IL12780898 A IL 12780898A IL 127808 A IL127808 A IL 127808A
Authority
IL
Israel
Prior art keywords
calibration
image
vector
error
scan
Prior art date
Application number
IL12780898A
Other languages
English (en)
Other versions
IL127808A0 (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IL127808A0 publication Critical patent/IL127808A0/xx
Publication of IL127808A publication Critical patent/IL127808A/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
    • A61B6/582—Calibration
    • A61B6/583—Calibration using calibration phantoms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
    • A61B6/5258—Devices using data or image processing specially adapted for radiation diagnosis involving detection or reduction of artifacts or noise
    • 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]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/027—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
    • 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
IL12780898A 1998-01-08 1998-12-29 Correction algorithm for bone-induced spectral artifacts in computed tomograph imaging IL127808A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/004,397 US6115487A (en) 1998-01-08 1998-01-08 Correction algorithm for bone-induced spectral artifacts in computed tomograph imaging

Publications (2)

Publication Number Publication Date
IL127808A0 IL127808A0 (en) 1999-10-28
IL127808A true IL127808A (en) 2002-05-23

Family

ID=21710607

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12780898A IL127808A (en) 1998-01-08 1998-12-29 Correction algorithm for bone-induced spectral artifacts in computed tomograph imaging

Country Status (4)

Country Link
US (1) US6115487A (de)
JP (1) JPH11253441A (de)
DE (1) DE19900298A1 (de)
IL (1) IL127808A (de)

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US6408088B1 (en) 1995-12-21 2002-06-18 General Electric Company Methods and apparatus for single slice helical image reconstruction in a computed tomography system
US6798860B1 (en) 2000-05-17 2004-09-28 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for deconvolving imaging data
US6480560B2 (en) 2001-03-16 2002-11-12 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for motion gating using CT projection data
US6813374B1 (en) * 2001-04-25 2004-11-02 Analogic Corporation Method and apparatus for automatic image quality assessment
US6421411B1 (en) 2001-05-10 2002-07-16 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for helical image artifact reduction
US6449330B1 (en) 2001-06-28 2002-09-10 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for artifact reduction in computed tomographic imaging
FR2828752B1 (fr) * 2001-08-20 2004-03-12 Ge Med Sys Global Tech Co Llc Procede de correction de la densite de contraste d'une image dans un dispositif de radiographie
DE10242910A1 (de) * 2001-09-17 2003-04-24 Ge Med Sys Global Tech Co Llc Bildrekonstruktionsverfahren und Röntgen-CT-Gerät
US6680995B2 (en) 2001-10-31 2004-01-20 Ge Medical Systems Global Technology Co., Llc Method and apparatus of determining and displaying a helical artifact index
JP3911415B2 (ja) * 2001-12-26 2007-05-09 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 Ｘ線ｃｔ装置
US20030171665A1 (en) * 2002-03-05 2003-09-11 Jiang Hsieh Image space correction for multi-slice helical reconstruction
US6654442B2 (en) * 2002-03-29 2003-11-25 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for weighting projection data
US20030199757A1 (en) * 2002-04-22 2003-10-23 Toth Thomas L. Method and apparatus of modulating radiation filtering during radiographic imaging
US6904120B2 (en) * 2003-07-01 2005-06-07 General Electric Company Method and apparatus for correcting bone induced spectral artifacts
US6944260B2 (en) * 2003-11-11 2005-09-13 Ge Medical Systems Global Technology Company, Llc Methods and apparatus for artifact reduction in computed tomography imaging systems
US7415145B2 (en) * 2003-12-30 2008-08-19 General Electric Company Methods and apparatus for artifact reduction
US20050201605A1 (en) * 2004-03-11 2005-09-15 Jianying Li Methods and apparatus for CT smoothing to reduce artifacts
US7086780B2 (en) * 2004-05-20 2006-08-08 General Electric Company Methods for spectrally calibrating CT imaging apparatus detectors
JP4585815B2 (ja) * 2004-09-03 2010-11-24 キヤノン株式会社 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
US7391844B2 (en) * 2005-01-14 2008-06-24 General Electric Company Method and apparatus for correcting for beam hardening in CT images
US7379527B2 (en) * 2005-12-22 2008-05-27 General Electric Company Methods and apparatus for CT calibration
US7653230B2 (en) * 2006-02-21 2010-01-26 General Electric Company Methods and systems for image reconstruction using low noise kernel
US7747057B2 (en) * 2006-05-26 2010-06-29 General Electric Company Methods and apparatus for BIS correction
US7729467B2 (en) 2007-03-22 2010-06-01 General Electric Company Methods and systems for attentuation correction in medical imaging
JP5386284B2 (ja) * 2009-09-25 2014-01-15 株式会社日立メディコ 放射線撮像装置
US8611627B2 (en) * 2009-12-23 2013-12-17 General Electric Company CT spectral calibration
US8750642B2 (en) * 2011-07-08 2014-06-10 Regents Of The University Of Minnesota Multistep correction for angle consistent artifacts in radial sampled datasets
US9649083B2 (en) 2014-12-10 2017-05-16 General Electric Company System and method for recalibrating a monochromatic image
CN111053566B (zh) * 2019-12-30 2021-09-07 上海联影医疗科技股份有限公司 X射线图像重建方法、装置、x射线成像系统及介质

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
US4149081A (en) * 1976-11-29 1979-04-10 Varian Associates, Inc. Removal of spectral artifacts and utilization of spectral effects in computerized tomography
DE9016046U1 (de) * 1990-11-26 1991-02-14 Kalender, Willi, Dr., 8521 Kleinseebach, De
US5301108A (en) * 1993-02-01 1994-04-05 General Electric Company Computed tomography system with z-axis correction
DE19502576B4 (de) * 1994-02-25 2004-04-15 Siemens Ag Computertomograph mit Spiralabtastung

Also Published As

Publication number Publication date
IL127808A0 (en) 1999-10-28
JPH11253441A (ja) 1999-09-21
US6115487A (en) 2000-09-05
DE19900298A1 (de) 1999-07-22

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Legal Events

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MM9K Patent not in force due to non-payment of renewal fees