[go: up one dir, main page]

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 OR CALCULATING; 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 (23)

* 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
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
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
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
CA2608119A1 (en) 2005-05-11 2006-11-16 Optosecurity Inc. 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
KR102067367B1 (ko) 2011-09-07 2020-02-11 라피스캔 시스템스, 인코포레이티드 적하목록 데이터를 이미징/검출 프로세싱에 통합시킨 x-선 검사 방법
US8929507B2 (en) * 2011-10-19 2015-01-06 Kabushiki Kaisha Toshiba Method and system for substantially reducing ring artifact based upon ring statistics
US10395396B2 (en) * 2015-04-01 2019-08-27 Hitachi, Ltd. X-ray CT apparatus, reconfiguration arithmetic apparatus, and X-ray CT image generation method
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
EP3764280B1 (en) 2016-02-22 2024-11-20 Rapiscan Systems, Inc. Methods for verifying types of containers
FI3580561T3 (fi) 2017-02-12 2023-12-12 Biontech Us Inc Hla-pohjaiset menetelmät ja koostumukset sekä niiden käyttö
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
CN113474840B (zh) 2018-12-21 2024-12-17 百欧恩泰美国公司 用于预测hla ii类特异性表位及表征cd4+ t细胞的方法和系统
CN111407303B (zh) * 2020-03-31 2025-02-07 汕头市超声仪器研究所股份有限公司 一种x射线源的扫查式限束准直机构及其控制方法

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
KR19990087775A (ko) * 1996-03-13 1999-12-27 토비 에취. 쿠스머 컴퓨터 단층촬영 링 억제필터

Also Published As

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

Similar Documents

Publication Publication Date Title
BR9708028A (pt) Filtro de supressão de anéis auto-calibrador para tomografia computadorizada
BR9708163A (pt) Filtro de supressão de anel para tomografia computadorizada
DE69635155D1 (de) Phasenkontrast-Röntgen-Computertomograph
DE69532575D1 (de) CT-Vorrichtungen
DE69718531D1 (de) Provisorische Filterkatheter
NO972657D0 (no) Filter for underjordisk bruk
ID18170A (id) Penyaring untuk penggunaan bawah tanah
DE69732928D1 (de) Blutfiltereinheit
ID18427A (id) Pengkabut serbuk
FI942196L (fi) Jauheinhalaattori
GB2322058B (en) Computed tomography streak suppression filter
BR9702090A (pt) Filtro de supressão de falsa indicação de movimento para uso em sistemas de tomografia computadorizada
NO980006L (no) Slange for medisinsk bruk
NO972792D0 (no) Filter for underjordisk bruk
BR9710370A (pt) Composi-Æo antimicrobiana e m-todo pata prepara-Æo da mesma
EP0473296A3 (en) Filter for computed tomography system
DE59813628D1 (de) Röntgendetektor
DE4480401T1 (de) Selbstkalibrierendes Computertomographie-Bildgebungssystem
FR2753879B1 (fr) Perfectionnement aux poulets de chair
IL127005A0 (en) Elastomeric connection for computed tomography system
DE19781924T1 (de) Atemfilter
NO20003182L (no) FremgangsmÕte for inhalering av pulverstoffer
IL126704A0 (en) Stair-case suppression for computed tomograph imaging
KR970050997U (ko) 의료용자석
ES1027932Y (es) Filtro de anillas

Legal Events

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