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BR9708163A - Filtro de supressão de anel para tomografia computadorizada - Google Patents

Filtro de supressão de anel para tomografia computadorizada

Info

Publication number
BR9708163A
BR9708163A BR9708163A BR9708163A BR9708163A BR 9708163 A BR9708163 A BR 9708163A BR 9708163 A BR9708163 A BR 9708163A BR 9708163 A BR9708163 A BR 9708163A BR 9708163 A BR9708163 A BR 9708163A
Authority
BR
Brazil
Prior art keywords
computed tomography
suppression filter
ring suppression
ring
filter
Prior art date
Application number
BR9708163A
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 BR9708163A publication Critical patent/BR9708163A/pt

Links

Classifications

    • G06T12/00—
    • 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

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (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)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
BR9708163A 1996-03-13 1997-02-25 Filtro de supressão de anel para tomografia computadorizada BR9708163A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61454196A 1996-03-13 1996-03-13
PCT/US1997/003055 WO1997033517A1 (en) 1996-03-13 1997-02-25 Computed tomography ring suppression filter

Publications (1)

Publication Number Publication Date
BR9708163A true BR9708163A (pt) 1999-07-27

Family

ID=24461696

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9708163A BR9708163A (pt) 1996-03-13 1997-02-25 Filtro de supressão de anel para tomografia computadorizada

Country Status (8)

Country Link
US (1) US5745542A (pt)
JP (1) JPH11511375A (pt)
KR (1) KR19990087775A (pt)
CN (1) CN1218377A (pt)
BR (1) BR9708163A (pt)
DE (1) DE19781653T1 (pt)
NL (1) NL1005511C2 (pt)
WO (1) WO1997033517A1 (pt)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997033518A1 (en) * 1996-03-13 1997-09-18 Analogic Corporation Computed tomography self-calibrating ring suppression filter
US8303576B2 (en) * 1998-02-24 2012-11-06 Hansen Medical, Inc. Interchangeable surgical instrument
US6115445A (en) * 1999-01-12 2000-09-05 Analogic Corporation Progressive correction of ring artifacts in a computed tomography system
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
DE10155089C1 (de) * 2001-11-09 2003-06-18 Siemens Ag Verfahren zur Entfernung von Ringen und Teilringen in Computertomographie-Bildern
US7050616B2 (en) * 2002-04-01 2006-05-23 Ge Medical Systems Global Technology Company, Llc Data transmission scheme and system for image reconstruction
US20050226365A1 (en) * 2004-03-30 2005-10-13 Kabushiki Kaisha Toshiba Radius-in-image dependent detector row filtering for windmill artifact reduction
US20070041613A1 (en) * 2005-05-11 2007-02-22 Luc Perron Database of target objects suitable for use in screening receptacles or people and method and apparatus for generating same
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
DE102005050917A1 (de) * 2005-10-24 2007-04-26 Siemens Ag Verfahren und Tomographiegerät zur Rekonstruktion einer tomographischen Darstellung eines Objektes
CN100565336C (zh) * 2005-11-21 2009-12-02 清华大学 成像系统
DE102006021373A1 (de) * 2006-05-08 2007-11-15 Siemens Ag Röntgendiagnostikeinrichtung
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
CN101460098B (zh) * 2006-06-02 2011-04-06 皇家飞利浦电子股份有限公司 X射线成像装置和用于校准x射线成像装置的设备和方法
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
EP1909227B1 (en) * 2006-10-03 2018-06-27 Vestel Elektronik Sanayi ve Ticaret A.S. Method of and apparatus for minimizing ringing artifacts in an input 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
US7929659B2 (en) * 2008-07-24 2011-04-19 General Electric Company System and method for generating computed tomography images
PL2753920T3 (pl) 2011-09-07 2018-09-28 Rapiscan Systems, Inc. System badania rentgenowskiego integrujący dane manifestu z przetwarzaniem obrazowania/detekcji
CN116309260A (zh) 2016-02-22 2023-06-23 拉皮斯坎系统股份有限公司 用于评估货物的平均货盘尺寸和密度的方法
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
CN110755100B (zh) * 2019-10-17 2023-07-04 沈阳智核医疗科技有限公司 校正方法、装置、控制台设备及pet系统
CN111053568B (zh) * 2019-12-30 2021-10-08 苏州瑞派宁科技有限公司 Ct图像中环形伪影的校正方法、装置及计算机存储介质
US12347100B2 (en) 2020-11-19 2025-07-01 Mazor Robotics Ltd. Systems and methods for generating virtual images

Family Cites Families (5)

* 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
US4682291A (en) * 1984-10-26 1987-07-21 Elscint Ltd. Noise artifacts reduction
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

Also Published As

Publication number Publication date
KR19990087775A (ko) 1999-12-27
NL1005511C2 (nl) 1998-04-06
DE19781653T1 (de) 1999-06-17
WO1997033517A1 (en) 1997-09-18
US5745542A (en) 1998-04-28
JPH11511375A (ja) 1999-10-05
CN1218377A (zh) 1999-06-02
NL1005511A1 (nl) 1997-09-17

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]