BR9708028A - Filtro de supressão de anéis auto-calibrador para tomografia computadorizada - Google Patents

Filtro de supressão de anéis auto-calibrador para tomografia computadorizada

Info

Publication number
BR9708028A
BR9708028A BR9708028A BR9708028A BR9708028A BR 9708028 A BR9708028 A BR 9708028A BR 9708028 A BR9708028 A BR 9708028A BR 9708028 A BR9708028 A BR 9708028A BR 9708028 A BR9708028 A BR 9708028A
Authority
BR
Brazil
Prior art keywords
self
computed tomography
suppression filter
ring suppression
calibrating ring
Prior art date
Application number
BR9708028A
Other languages
English (en)
Inventor
Bernard M Gordon
Ching-Ming Lai
Original Assignee
Analogic Corp
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 Analogic Corp filed Critical Analogic Corp
Publication of BR9708028A publication Critical patent/BR9708028A/pt

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
BR9708028A 1996-03-13 1997-02-25 Filtro de supressão de anéis auto-calibrador para tomografia computadorizada BR9708028A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61466096A 1996-03-13 1996-03-13
PCT/US1997/003057 WO1997033518A1 (en) 1996-03-13 1997-02-25 Computed tomography self-calibrating ring suppression filter

Publications (1)

Publication Number Publication Date
BR9708028A true BR9708028A (pt) 1999-08-03

Family

ID=24462209

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9708028A BR9708028A (pt) 1996-03-13 1997-02-25 Filtro de supressão de anéis auto-calibrador para tomografia computadorizada

Country Status (8)

Country Link
US (1) US5841828A (pt)
JP (1) JPH11511376A (pt)
KR (1) KR19990087774A (pt)
CN (1) CN1190168C (pt)
BR (1) BR9708028A (pt)
DE (1) DE19781652T1 (pt)
NL (1) NL1005512C2 (pt)
WO (1) WO1997033518A1 (pt)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4603086B2 (ja) * 1999-08-23 2010-12-22 Ｇｅヘルスケア・ジャパン株式会社 プロジェクションデータ補正方法、プロジェクションデータ補正装置、記録媒体および放射線断層撮像装置
US6707952B1 (en) 2000-05-30 2004-03-16 Sharp Laboratories Of America, Inc. Method for removing ringing artifacts from locations near dominant edges of an image reconstructed after compression
US7440635B2 (en) * 2000-05-30 2008-10-21 Sharp Laboratories Of America, Inc. Method for removing ringing artifacts from locations near dominant edges of an image reconstructed after compression
JP2003130961A (ja) * 2001-07-19 2003-05-08 Siemens Ag 検出器モジュール、ｘ線コンピュータトモグラフ用の検出器およびｘ線コンピュータトモグラフによる断層像の作成方法
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
AU2002360580A1 (en) * 2001-12-14 2003-06-30 Wisconsin Alumni Research Foundation Virtual spherical anode computed tomography
DE102004057308A1 (de) * 2004-11-26 2006-07-13 Siemens Ag Angiographische Röntgendiagnostikeinrichtung zur Rotationsangiographie
US20090174554A1 (en) 2005-05-11 2009-07-09 Eric Bergeron Method and system for screening luggage items, cargo containers or persons
US7991242B2 (en) 2005-05-11 2011-08-02 Optosecurity Inc. Apparatus, method and system for screening receptacles and persons, having image distortion correction functionality
US7899232B2 (en) 2006-05-11 2011-03-01 Optosecurity Inc. Method and apparatus for providing threat image projection (TIP) in a luggage screening system, and luggage screening system implementing same
US8494210B2 (en) 2007-03-30 2013-07-23 Optosecurity Inc. User interface for use in security screening providing image enhancement capabilities and apparatus for implementing same
US7860341B2 (en) * 2006-07-21 2010-12-28 Varian Medical Systems, Inc. System and method for correcting for ring artifacts in an image
JP5538684B2 (ja) * 2008-03-13 2014-07-02 キヤノン株式会社 画像処理装置、画像処理方法、プログラム、及び記憶媒体
CN101714876B (zh) * 2009-11-04 2012-10-10 清华大学 一种滤波器的校正装置及有源rc复数滤波器
AU2012304490B2 (en) 2011-09-07 2015-06-25 Rapiscan Systems, Inc. X-ray inspection system that integrates manifest data with imaging/detection processing
US8929507B2 (en) * 2011-10-19 2015-01-06 Kabushiki Kaisha Toshiba Method and system for substantially reducing ring artifact based upon ring statistics
WO2016158138A1 (ja) * 2015-04-01 2016-10-06 株式会社日立製作所 Ｘ線ｃｔ装置、再構成演算装置およびｘ線ｃｔ画像生成方法
CN105326519B (zh) * 2015-11-26 2017-03-22 上海联影医疗科技有限公司 X射线图像形成、散射成分计算以及重建的方法及装置
CN109074889B (zh) 2016-02-22 2022-10-18 拉皮斯坎***股份有限公司 用于检测货物中的危险品和违禁品的***和方法
HUE065174T2 (hu) 2017-02-12 2024-05-28 Biontech Us Inc HLA-alapú módszerek és készítmények, valamint azok felhasználása
CN111096761B (zh) * 2018-10-29 2024-03-08 上海西门子医疗器械有限公司 修正楔形滤波器散射的方法、装置和相关设备
KR102670790B1 (ko) 2018-12-21 2024-05-29 바이오엔테크 유에스 인크. Hla 클래스 ii-특이적 에피토프 예측 및 cd4+ t 세포 특징화를 위한 방법 및 시스템

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670840A (en) * 1983-03-09 1987-06-02 Elscint, Inc. Ring artifact correction for computerized tomography
US5450461A (en) * 1993-12-30 1995-09-12 General Electric Company Self-calibrating computed tomography imaging system
US5473656A (en) * 1994-09-15 1995-12-05 General Electric Company Computed tomography system with correction for z-axis detector non-uniformity
US5533081A (en) * 1995-01-17 1996-07-02 General Electric Company Guided ringfix algorithm for image reconstruction
IL116738A0 (en) * 1995-01-23 1996-05-14 Gen Electric Detector z-axis gain correction for a ct system
CN1218377A (zh) * 1996-03-13 1999-06-02 模拟技术有限公司 计算层析x射线摄影环纹抑制滤波器

Also Published As

Publication number Publication date
WO1997033518A1 (en) 1997-09-18
NL1005512A1 (nl) 1997-09-17
KR19990087774A (ko) 1999-12-27
CN1213280A (zh) 1999-04-07
JPH11511376A (ja) 1999-10-05
NL1005512C2 (nl) 1998-07-20
CN1190168C (zh) 2005-02-23
US5841828A (en) 1998-11-24
DE19781652T1 (de) 1999-05-12

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]