NL1005041C2 - öStreakö-onderdrukkingsfilter voor gebruik in computertomografie- systemen. - Google Patents
öStreakö-onderdrukkingsfilter voor gebruik in computertomografie- systemen. Download PDFInfo
- Publication number
- NL1005041C2 NL1005041C2 NL1005041A NL1005041A NL1005041C2 NL 1005041 C2 NL1005041 C2 NL 1005041C2 NL 1005041 A NL1005041 A NL 1005041A NL 1005041 A NL1005041 A NL 1005041A NL 1005041 C2 NL1005041 C2 NL 1005041C2
- Authority
- NL
- Netherlands
- Prior art keywords
- signal
- low
- signals
- frequency signal
- frequency
- Prior art date
Links
- 238000002591 computed tomography Methods 0.000 title claims description 90
- 230000001629 suppression Effects 0.000 title claims description 63
- 238000001914 filtration Methods 0.000 claims description 36
- 230000004044 response Effects 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 description 33
- 210000000988 bone and bone Anatomy 0.000 description 20
- 238000000034 method Methods 0.000 description 15
- 210000004872 soft tissue Anatomy 0.000 description 14
- 238000012545 processing Methods 0.000 description 11
- 238000012546 transfer Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 7
- 230000000670 limiting effect Effects 0.000 description 6
- 230000008707 rearrangement Effects 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 3
- 238000012935 Averaging Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
Classifications
-
- 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
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computed tomography [CT]
- A61B6/032—Transmission computed tomography [CT]
- A61B6/035—Mechanical aspects of CT
-
- 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
- G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
-
- 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)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (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)
- Image Analysis (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/587,468 US5680426A (en) | 1996-01-17 | 1996-01-17 | Streak suppression filter for use in computed tomography systems |
| US58746896 | 1996-01-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL1005041A1 NL1005041A1 (nl) | 1997-07-18 |
| NL1005041C2 true NL1005041C2 (nl) | 1998-04-15 |
Family
ID=24349925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL1005041A NL1005041C2 (nl) | 1996-01-17 | 1997-01-17 | öStreakö-onderdrukkingsfilter voor gebruik in computertomografie- systemen. |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5680426A (de) |
| JP (1) | JPH11502757A (de) |
| KR (1) | KR19990077059A (de) |
| CN (1) | CN1183874C (de) |
| AU (1) | AU7739896A (de) |
| BR (1) | BR9612437A (de) |
| DE (1) | DE19681690T1 (de) |
| GB (1) | GB2322058B (de) |
| NL (1) | NL1005041C2 (de) |
| WO (1) | WO1997025924A1 (de) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100217372B1 (ko) * | 1996-06-24 | 1999-09-01 | 윤종용 | 음성처리장치의 피치 추출방법 |
| US6801594B1 (en) * | 1997-11-26 | 2004-10-05 | General Electric Company | Computed tomography fluoroscopy system |
| US6148058A (en) * | 1998-10-23 | 2000-11-14 | Analogic Corporation | System and method for real time measurement of detector offset in rotating-patient CT scanner |
| JP4542259B2 (ja) * | 2000-12-25 | 2010-09-08 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | Ｘ線ｃｔシステム及びｘ線診断装置 |
| DE10143484A1 (de) * | 2001-09-05 | 2003-04-03 | Siemens Ag | Adaptives Filter |
| US7050616B2 (en) * | 2002-04-01 | 2006-05-23 | Ge Medical Systems Global Technology Company, Llc | Data transmission scheme and system for image reconstruction |
| CN100563570C (zh) * | 2004-07-07 | 2009-12-02 | 皇家飞利浦电子股份有限公司 | 心脏锥面光束ct重建中条纹伪影的减少 |
| EP1839266A1 (de) * | 2004-11-23 | 2007-10-03 | Philips Intellectual Property & Standards GmbH | Verfahren und vorrichtung zur bildwiederherstellung |
| US7711170B2 (en) * | 2005-05-10 | 2010-05-04 | General Electric Company | Method and system for filtering scan data |
| US7983462B2 (en) * | 2005-11-22 | 2011-07-19 | Purdue Research Foundation | Methods and systems for improving quality of an image |
| DE102007061934A1 (de) * | 2007-12-21 | 2009-06-25 | Siemens Aktiengesellschaft | Verfahren zur Qualitätssteigerung von computertomographischen Aufnahmeserien durch Projektionsdatenverarbeitung und CT-System mit Recheneinheit |
| DE102007012783B4 (de) * | 2007-03-16 | 2012-03-29 | Siemens Ag | Verfahren zur Analyse eines Messsignals insbesondere eines medizinischen Bilddetektors auf außerordentliche Abweichungen hin |
| US8964256B2 (en) * | 2008-04-30 | 2015-02-24 | Xerox Corporation | Method of correcting streaks using exposure modulation and spatially varying TRCs |
| US8400683B2 (en) * | 2008-05-28 | 2013-03-19 | Xerox Corporation | Streak compensation using model based projections for run time updates |
| US7952761B2 (en) * | 2008-05-28 | 2011-05-31 | Xerox Corporation | System and method to compensate streaks using a spatially varying printer model and run time updates |
| DE102010013361B4 (de) * | 2010-03-30 | 2016-12-08 | Siemens Healthcare Gmbh | Verbesserte Zeitauflösung bei Cardio-CT-Aufnahmen |
| US20130051644A1 (en) * | 2011-08-29 | 2013-02-28 | General Electric Company | Method and apparatus for performing motion artifact reduction |
| CN105374012B (zh) * | 2014-08-27 | 2018-11-27 | 通用电气公司 | 用于消除由性能差异的探测器单元所致的条状伪影的方法 |
| CN106910164A (zh) * | 2015-12-23 | 2017-06-30 | 通用电气公司 | 一种对ct投影数据进行滤波的方法及装置 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729100A (en) * | 1984-08-28 | 1988-03-01 | Kabushiki Kaisha Toshiba | CT System which convolutes projection data with a frequency varying filter function |
| US5416815A (en) * | 1993-07-02 | 1995-05-16 | General Electric Company | Adaptive filter for reducing streaking artifacts in x-ray tomographic images |
| US5473656A (en) * | 1994-09-15 | 1995-12-05 | General Electric Company | Computed tomography system with correction for z-axis detector non-uniformity |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4463375A (en) * | 1982-09-07 | 1984-07-31 | The Board Of Trustees Of The Leland Standford Junior University | Multiple-measurement noise-reducing system |
| US5400377A (en) * | 1993-07-16 | 1995-03-21 | General Electric Company | Artifact reduction method for tomographic image reconstruction using cross-plane rays |
| US5473655A (en) * | 1994-07-21 | 1995-12-05 | General Electric Company | Artifact reduction by z-dependent filtration of three-dimensional cone beam data |
-
1996
- 1996-01-17 US US08/587,468 patent/US5680426A/en not_active Expired - Fee Related
- 1996-11-19 AU AU77398/96A patent/AU7739896A/en not_active Abandoned
- 1996-11-19 CN CNB961996919A patent/CN1183874C/zh not_active Expired - Fee Related
- 1996-11-19 KR KR1019980705192A patent/KR19990077059A/ko active IP Right Grant
- 1996-11-19 WO PCT/US1996/018582 patent/WO1997025924A1/en active IP Right Grant
- 1996-11-19 BR BR9612437A patent/BR9612437A/pt not_active Application Discontinuation
- 1996-11-19 DE DE19681690T patent/DE19681690T1/de not_active Withdrawn
- 1996-11-19 GB GB9811790A patent/GB2322058B/en not_active Expired - Fee Related
- 1996-11-19 JP JP9525980A patent/JPH11502757A/ja active Pending
-
1997
- 1997-01-17 NL NL1005041A patent/NL1005041C2/nl not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4729100A (en) * | 1984-08-28 | 1988-03-01 | Kabushiki Kaisha Toshiba | CT System which convolutes projection data with a frequency varying filter function |
| US5416815A (en) * | 1993-07-02 | 1995-05-16 | General Electric Company | Adaptive filter for reducing streaking artifacts in x-ray tomographic images |
| US5473656A (en) * | 1994-09-15 | 1995-12-05 | General Electric Company | Computed tomography system with correction for z-axis detector non-uniformity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1207656A (zh) | 1999-02-10 |
| AU7739896A (en) | 1997-08-11 |
| NL1005041A1 (nl) | 1997-07-18 |
| JPH11502757A (ja) | 1999-03-09 |
| BR9612437A (pt) | 1999-07-13 |
| CN1183874C (zh) | 2005-01-12 |
| US5680426A (en) | 1997-10-21 |
| GB2322058A (en) | 1998-08-12 |
| GB2322058B (en) | 1999-09-08 |
| DE19681690T1 (de) | 1998-12-03 |
| GB9811790D0 (en) | 1998-07-29 |
| KR19990077059A (ko) | 1999-10-25 |
| WO1997025924A1 (en) | 1997-07-24 |
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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: 20020801 |