NL1005512A1 - Zelf-kalibrerend ringonderdukkingsfilter voor gebruik in gecomputeriseerde tomografiestelsels. - Google Patents

Zelf-kalibrerend ringonderdukkingsfilter voor gebruik in gecomputeriseerde tomografiestelsels.

Info

Publication number
NL1005512A1
NL1005512A1 NL1005512A NL1005512A NL1005512A1 NL 1005512 A1 NL1005512 A1 NL 1005512A1 NL 1005512 A NL1005512 A NL 1005512A NL 1005512 A NL1005512 A NL 1005512A NL 1005512 A1 NL1005512 A1 NL 1005512A1
Authority
NL
Netherlands
Prior art keywords
self
computerized tomography
tomography systems
ring blanking
blanking filter
Prior art date
Application number
NL1005512A
Other languages
English (en)
Other versions
NL1005512C2 (nl
Inventor
Bernard Marshall Gordon
Lai Ching-Ming
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 NL1005512A1 publication Critical patent/NL1005512A1/nl
Application granted granted Critical
Publication of NL1005512C2 publication Critical patent/NL1005512C2/nl

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)
NL1005512A 1996-03-13 1997-03-12 Gecomputeriseerd tomografiestelsel met zelfkalibrerende ringonderdrukking. NL1005512C2 (nl)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61466096A 1996-03-13 1996-03-13
US61466096 1996-03-13

Publications (2)

Publication Number Publication Date
NL1005512A1 true NL1005512A1 (nl) 1997-09-17
NL1005512C2 NL1005512C2 (nl) 1998-07-20

Family

ID=24462209

Family Applications (1)

Application Number Title Priority Date Filing Date
NL1005512A NL1005512C2 (nl) 1996-03-13 1997-03-12 Gecomputeriseerd tomografiestelsel met zelfkalibrerende ringonderdrukking.

Country Status (8)

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

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
WO2003051201A2 (en) * 2001-12-14 2003-06-26 Wisconsin Alumni Research Foundation Virtual spherical anode computed tomography
DE102004057308A1 (de) 2004-11-26 2006-07-13 Siemens Ag Angiographische Röntgendiagnostikeinrichtung zur Rotationsangiographie
US7991242B2 (en) 2005-05-11 2011-08-02 Optosecurity Inc. Apparatus, method and system for screening receptacles and persons, having image distortion correction functionality
US20090174554A1 (en) 2005-05-11 2009-07-09 Eric Bergeron Method and system for screening luggage items, cargo containers or persons
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
JP6025849B2 (ja) 2011-09-07 2016-11-16 ラピスカン システムズ、インコーポレイテッド マニフェストデータをイメージング／検知処理に統合するｘ線検査システム
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
US10302807B2 (en) 2016-02-22 2019-05-28 Rapiscan Systems, Inc. Systems and methods for detecting threats and contraband in cargo
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
AU2019404547A1 (en) 2018-12-21 2021-07-22 Biontech Us Inc. Method and systems for prediction of HLA class II-specific epitopes and characterization of CD4+ T cells

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
DE19781653T1 (de) * 1996-03-13 1999-06-17 Analogic Corp Ringunterdrückungsfilter für die Computertomographie

Also Published As

Publication number Publication date
JPH11511376A (ja) 1999-10-05
CN1213280A (zh) 1999-04-07
CN1190168C (zh) 2005-02-23
DE19781652T1 (de) 1999-05-12
KR19990087774A (ko) 1999-12-27
US5841828A (en) 1998-11-24
BR9708028A (pt) 1999-08-03
WO1997033518A1 (en) 1997-09-18
NL1005512C2 (nl) 1998-07-20

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Legal Events

Date Code Title Description
AD1A A request for search or an international type search has been filed
PD2B A search report has been drawn up
VD1 Lapsed due to non-payment of the annual fee

Effective date: 20021001