DE19781652T1 - Selbsteichendes Ringunterdrückungsfilter für die Computertomographie - Google Patents
Selbsteichendes Ringunterdrückungsfilter für die ComputertomographieInfo
- Publication number
- DE19781652T1 DE19781652T1 DE19781652T DE19781652T DE19781652T1 DE 19781652 T1 DE19781652 T1 DE 19781652T1 DE 19781652 T DE19781652 T DE 19781652T DE 19781652 T DE19781652 T DE 19781652T DE 19781652 T1 DE19781652 T1 DE 19781652T1
- Authority
- DE
- Germany
- Prior art keywords
- self
- computed tomography
- adjusting ring
- suppression filter
- ring suppression
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
- 238000002591 computed tomography Methods 0.000 title 1
- 230000001629 suppression Effects 0.000 title 1
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)
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 |
---|---|
DE19781652T1 true DE19781652T1 (de) | 1999-05-12 |
Family
ID=24462209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19781652T Withdrawn DE19781652T1 (de) | 1996-03-13 | 1997-02-25 | Selbsteichendes Ringunterdrückungsfilter für die Computertomographie |
Country Status (8)
Country | Link |
---|---|
US (1) | US5841828A (de) |
JP (1) | JPH11511376A (de) |
KR (1) | KR19990087774A (de) |
CN (1) | CN1190168C (de) |
BR (1) | BR9708028A (de) |
DE (1) | DE19781652T1 (de) |
NL (1) | NL1005512C2 (de) |
WO (1) | WO1997033518A1 (de) |
Families Citing this family (22)
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 |
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 |
GB2508565B (en) | 2011-09-07 | 2016-10-05 | 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 |
CN107530040B (zh) * | 2015-04-01 | 2020-09-01 | 株式会社日立制作所 | X射线ct装置、重构运算装置以及x射线ct图像生成方法 |
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 |
EP3764280A1 (de) | 2016-02-22 | 2021-01-13 | Rapiscan Systems, Inc. | Verfahren zur verifikation von containertypen |
US11965892B2 (en) | 2017-02-12 | 2024-04-23 | Biontech Us Inc. | HLA-based methods and compositions and uses thereof |
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 |
BR112021012278A2 (pt) | 2018-12-21 | 2021-12-14 | Biontech Us Inc | Método e sistema para a preparação de células hla de classe ii-específica de epitopes e de síntese de cd4 + t |
Family Cites Families (6)
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 |
WO1997033517A1 (en) * | 1996-03-13 | 1997-09-18 | Analogic Corporation | Computed tomography ring suppression filter |
-
1997
- 1997-02-25 KR KR1019980707254A patent/KR19990087774A/ko not_active Application Discontinuation
- 1997-02-25 WO PCT/US1997/003057 patent/WO1997033518A1/en not_active Application Discontinuation
- 1997-02-25 BR BR9708028A patent/BR9708028A/pt unknown
- 1997-02-25 DE DE19781652T patent/DE19781652T1/de not_active Withdrawn
- 1997-02-25 JP JP9532631A patent/JPH11511376A/ja active Pending
- 1997-02-25 CN CNB971930619A patent/CN1190168C/zh not_active Expired - Fee Related
- 1997-03-12 NL NL1005512A patent/NL1005512C2/nl not_active IP Right Cessation
- 1997-04-29 US US08/840,681 patent/US5841828A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
BR9708028A (pt) | 1999-08-03 |
CN1190168C (zh) | 2005-02-23 |
NL1005512A1 (nl) | 1997-09-17 |
KR19990087774A (ko) | 1999-12-27 |
NL1005512C2 (nl) | 1998-07-20 |
CN1213280A (zh) | 1999-04-07 |
US5841828A (en) | 1998-11-24 |
WO1997033518A1 (en) | 1997-09-18 |
JPH11511376A (ja) | 1999-10-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8607 | Notification of search results after publication | ||
8130 | Withdrawal |