IL140572A - Methods and device for multi-sectional computed tomography with helical reconstruction on a slope - Google Patents
Methods and device for multi-sectional computed tomography with helical reconstruction on a slopeInfo
- Publication number
- IL140572A IL140572A IL14057200A IL14057200A IL140572A IL 140572 A IL140572 A IL 140572A IL 14057200 A IL14057200 A IL 14057200A IL 14057200 A IL14057200 A IL 14057200A IL 140572 A IL140572 A IL 140572A
- Authority
- IL
- Israel
- Prior art keywords
- fourier transform
- projection data
- accordance
- phase shift
- projection
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000010363 phase shift Effects 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 238000013170 computed tomography imaging Methods 0.000 claims description 11
- 238000003384 imaging method Methods 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 4
- 238000002591 computed tomography Methods 0.000 description 16
- 238000005259 measurement Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- 238000013519 translation Methods 0.000 description 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
- G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
-
- 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
- A61B6/027—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis characterised by the use of a particular data acquisition trajectory, e.g. helical or spiral
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2211/00—Image generation
- G06T2211/40—Computed tomography
- G06T2211/421—Filtered back projection [FBP]
-
- 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)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Biophysics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/473,341 US6332013B1 (en) | 1999-12-28 | 1999-12-28 | Methods and apparatus for tilted helical reconstruction multislice CT |
Publications (2)
Publication Number | Publication Date |
---|---|
IL140572A0 IL140572A0 (en) | 2002-02-10 |
IL140572A true IL140572A (en) | 2004-08-31 |
Family
ID=23879152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL14057200A IL140572A (en) | 1999-12-28 | 2000-12-26 | Methods and device for multi-sectional computed tomography with helical reconstruction on a slope |
Country Status (5)
Country | Link |
---|---|
US (1) | US6332013B1 (ru) |
EP (1) | EP1113397A2 (ru) |
JP (1) | JP2001218764A (ru) |
CN (1) | CN1225716C (ru) |
IL (1) | IL140572A (ru) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6704392B2 (en) * | 2001-07-03 | 2004-03-09 | Ge Medical Systems Global Technology Company, Llc | X-ray tube and method having tilted rotation axis |
JP4175791B2 (ja) * | 2001-08-20 | 2008-11-05 | 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 | 画像生成方法およびx線ct装置 |
US6587537B1 (en) | 2002-04-01 | 2003-07-01 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for multi-slice image reconstruction |
US6751283B2 (en) * | 2002-08-06 | 2004-06-15 | Koninklijke Philips Electronics, N.V. | Reconstruction method for tilted-gantry computed tomography |
US6904117B2 (en) * | 2002-10-30 | 2005-06-07 | Toshiba Corporation | Tilted gantry helical cone-beam Feldkamp reconstruction for multislice CT |
US6647084B1 (en) | 2002-11-11 | 2003-11-11 | Ge Medical Systems Global Technology Company, Llc | Method and apparatus for filtering projection data of a helical scan |
US7239730B2 (en) * | 2003-01-29 | 2007-07-03 | Ge Medical Systems Global Technology Company, Llc | Method and apparatus for volume scoring calcification concentrations of a CT scan |
JP4409223B2 (ja) * | 2003-07-24 | 2010-02-03 | 東芝医用システムエンジニアリング株式会社 | X線ct装置及びx線ct用逆投影演算方法 |
US6977984B2 (en) * | 2003-10-07 | 2005-12-20 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for dynamical helical scanned image production |
US7076029B2 (en) * | 2003-10-27 | 2006-07-11 | General Electric Company | Method and apparatus of radiographic imaging with an energy beam tailored for a subject to be scanned |
CN100443053C (zh) * | 2005-04-29 | 2008-12-17 | Ge医疗系统环球技术有限公司 | 信号处理方法与装置以及x射线ct装置 |
US7344306B2 (en) * | 2005-06-30 | 2008-03-18 | General Electric Company | Systems and methods for compensating for table sag |
JP4611168B2 (ja) * | 2005-10-07 | 2011-01-12 | 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 | 画像再構成方法、およびx線ct装置 |
CN100401983C (zh) * | 2005-10-27 | 2008-07-16 | 上海交通大学 | 基于双源双螺旋多层螺旋ct的重建方法 |
JP2007236662A (ja) * | 2006-03-09 | 2007-09-20 | Ge Medical Systems Global Technology Co Llc | X線ct装置およびそのx線ct画像再構成方法、x線ct画像撮影方法。 |
WO2007148725A1 (ja) * | 2006-06-22 | 2007-12-27 | Tohoku University | X線ct装置及び同装置の画像再構成方法並びに画像再構成プログラム |
US8224056B2 (en) * | 2009-12-15 | 2012-07-17 | General Electronic Company | Method for computed tomography motion estimation and compensation |
US9384567B2 (en) * | 2011-10-03 | 2016-07-05 | Fei Company | Computed tomography imaging process and system |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19626095C2 (de) * | 1996-06-28 | 2001-02-08 | Siemens Ag | Computertomograph |
JP3588048B2 (ja) * | 1997-07-01 | 2004-11-10 | アナロジック コーポレーション | ヘリカルスキャン・立体的コンピュータ断層撮影システムのための改良検出器アレイ幾何学配列 |
WO1999018854A1 (en) * | 1997-10-10 | 1999-04-22 | Analogic Corporation | Computed tomography scanning target detection |
US6229869B1 (en) * | 1998-08-25 | 2001-05-08 | General Electric Company | Tilted gantry image correction for a multislice computed tomography system |
US6061420A (en) * | 1998-08-25 | 2000-05-09 | General Electric Company | Methods and apparatus for graphical Rx in a multislice imaging system |
-
1999
- 1999-12-28 US US09/473,341 patent/US6332013B1/en not_active Expired - Fee Related
-
2000
- 2000-12-22 EP EP00311613A patent/EP1113397A2/en not_active Withdrawn
- 2000-12-26 IL IL14057200A patent/IL140572A/en not_active IP Right Cessation
- 2000-12-27 JP JP2000396388A patent/JP2001218764A/ja not_active Withdrawn
- 2000-12-28 CN CNB001375350A patent/CN1225716C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2001218764A (ja) | 2001-08-14 |
US6332013B1 (en) | 2001-12-18 |
CN1304036A (zh) | 2001-07-18 |
EP1113397A2 (en) | 2001-07-04 |
IL140572A0 (en) | 2002-02-10 |
CN1225716C (zh) | 2005-11-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FF | Patent granted | ||
KB | Patent renewed | ||
KB | Patent renewed | ||
MM9K | Patent not in force due to non-payment of renewal fees |