IL137863A - Methods and apparatus for positioning a ct imagingx-ray beam - Google Patents
Methods and apparatus for positioning a ct imagingx-ray beamInfo
- Publication number
- IL137863A IL137863A IL13786300A IL13786300A IL137863A IL 137863 A IL137863 A IL 137863A IL 13786300 A IL13786300 A IL 13786300A IL 13786300 A IL13786300 A IL 13786300A IL 137863 A IL137863 A IL 137863A
- Authority
- IL
- Israel
- Prior art keywords
- accordance
- focal spot
- ray
- ray beam
- detector
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 48
- 238000003384 imaging method Methods 0.000 claims description 25
- 230000008859 change Effects 0.000 claims description 12
- 238000012886 linear function Methods 0.000 claims description 12
- 238000012546 transfer Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 8
- 238000012937 correction Methods 0.000 claims description 7
- 240000007509 Phytolacca dioica Species 0.000 claims description 5
- 230000036961 partial effect Effects 0.000 claims description 3
- 238000002591 computed tomography Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 9
- 238000013170 computed tomography imaging Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 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
- A61B6/58—Testing, adjusting or calibrating thereof
- A61B6/582—Calibration
- A61B6/583—Calibration using calibration phantoms
-
- 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]
-
- 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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4064—Arrangements for generating radiation specially adapted for radiation diagnosis specially adapted for producing a particular type of beam
- A61B6/4085—Cone-beams
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Optics & Photonics (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Public Health (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/384,169 US6385279B1 (en) | 1999-08-27 | 1999-08-27 | Methods and apparatus for positioning a CT imaging x-ray beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL137863A0 IL137863A0 (en) | 2001-10-31 |
| IL137863A true IL137863A (en) | 2005-12-18 |
Family
ID=23516309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL13786300A IL137863A (en) | 1999-08-27 | 2000-08-15 | Methods and apparatus for positioning a ct imagingx-ray beam |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6385279B1 (ja) |
| EP (1) | EP1078599B1 (ja) |
| JP (1) | JP4554045B2 (ja) |
| DE (1) | DE60041850D1 (ja) |
| IL (1) | IL137863A (ja) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US6597756B1 (en) | 2002-06-19 | 2003-07-22 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for multi-slice image reconstruction |
| CA2491759A1 (en) * | 2002-07-25 | 2004-02-19 | Gendex Corporation | Real-time digital x-ray imaging apparatus and method |
| US6873676B2 (en) * | 2003-03-05 | 2005-03-29 | Ge Medical Systems Global Technology Company, Llc | Convolution reconstruction algorithm for multi-slice CT |
| US6866419B2 (en) * | 2003-03-12 | 2005-03-15 | Ge Medical Systems Global Technology Company Llc | Methods and apparatus for motion correction in imaging systems |
| US7366280B2 (en) * | 2003-06-19 | 2008-04-29 | General Electric Company | Integrated arc anode x-ray source for a computed tomography system |
| JP4062232B2 (ja) * | 2003-10-20 | 2008-03-19 | 株式会社日立製作所 | Ｘ線ｃｔ装置及びｘ線ｃｔ装置による撮像方法 |
| US6980623B2 (en) * | 2003-10-29 | 2005-12-27 | Ge Medical Systems Global Technology Company Llc | Method and apparatus for z-axis tracking and collimation |
| US7020243B2 (en) * | 2003-12-05 | 2006-03-28 | Ge Medical Systems Global Technology Company Llc | Method and system for target angle heel effect compensation |
| US7187748B2 (en) * | 2003-12-30 | 2007-03-06 | Ge Medical Systems Global Technology Company, Llc | Multidetector CT imaging method and apparatus with reducing radiation scattering |
| US7113570B2 (en) * | 2005-02-08 | 2006-09-26 | General Electric Company | Methods and systems for helical overscan reduction |
| US7101078B1 (en) * | 2005-02-11 | 2006-09-05 | General Electric Company | Methods and systems for imaging system radiation source alignment |
| DE102005018811B4 (de) * | 2005-04-22 | 2008-02-21 | Siemens Ag | Blendenvorrichtung für eine zur Abtastung eines Objektes vorgesehene Röntgeneinrichtung und Verfahren für eine Blendenvorrichtung |
| DE102005020124B4 (de) * | 2005-04-29 | 2011-07-14 | Siemens AG, 80333 | Röntgensystem, enthaltend einen zugeordneten, mobilen Festkörperdetektor und Verfahren zur Aufnahme und Anzeige eines Röntgenbildes |
| US7257187B2 (en) * | 2005-05-06 | 2007-08-14 | General Electric Company | Methods and apparatus for calibrating CT x-ray beam tracking loop |
| EP2139397B1 (en) | 2007-04-25 | 2016-01-13 | Koninklijke Philips N.V. | X-ray beam z-axis positioning |
| CN101900823B (zh) * | 2009-05-31 | 2012-10-03 | 上海西门子医疗器械有限公司 | 一种x射线偏移的校正方法和装置 |
| DE102011075527A1 (de) | 2011-05-09 | 2012-11-15 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Durchstrahlungssystem und Kalibrierung desselben |
| US8571176B2 (en) | 2011-06-17 | 2013-10-29 | General Electric Company | Methods and apparatus for collimation of detectors |
| US8699659B2 (en) | 2011-06-23 | 2014-04-15 | General Electric Company | Systems and methods for focal spot motion correction |
| US8976934B2 (en) * | 2012-06-19 | 2015-03-10 | General Electric Company | Radiation apertures for X-ray collimators |
| CN104574460B (zh) * | 2014-12-31 | 2017-06-27 | 沈阳东软医疗系统有限公司 | 一种ct图像重建方法和装置 |
| US20180241452A1 (en) * | 2017-02-23 | 2018-08-23 | Qualcomm Incorporated | Beam sweeping for control and data transmissions |
| EP3413691A1 (en) * | 2017-06-08 | 2018-12-12 | Koninklijke Philips N.V. | Apparatus for generating x-rays |
| US10779791B2 (en) * | 2018-03-16 | 2020-09-22 | General Electric Company | System and method for mobile X-ray imaging |
| CN109431534B (zh) * | 2018-11-30 | 2022-12-06 | 深圳安科高技术股份有限公司 | 一种射线准直器的自校准方法及其系统 |
| US10898159B2 (en) * | 2019-01-11 | 2021-01-26 | General Electric Company | X-ray imaging system use and calibration |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5894833A (ja) * | 1981-12-01 | 1983-06-06 | 株式会社東芝 | Ｘ線ｃｔ装置 |
| US5485493A (en) | 1988-10-20 | 1996-01-16 | Picker International, Inc. | Multiple detector ring spiral scanner with relatively adjustable helical paths |
| US4991189A (en) | 1990-04-16 | 1991-02-05 | General Electric Company | Collimation apparatus for x-ray beam correction |
| DE4207006C2 (de) | 1992-03-05 | 1994-07-14 | Siemens Ag | Computertomograph |
| US5347216A (en) * | 1992-06-23 | 1994-09-13 | General Electric Company | Fast NMR image acquisition with spectrally selective inversion pulse |
| US5469429A (en) | 1993-05-21 | 1995-11-21 | Kabushiki Kaisha Toshiba | X-ray CT apparatus having focal spot position detection means for the X-ray tube and focal spot position adjusting means |
| US5550886A (en) | 1994-11-22 | 1996-08-27 | Analogic Corporation | X-Ray focal spot movement compensation system |
| JP2774790B2 (ja) * | 1995-02-16 | 1998-07-09 | 株式会社東芝 | Ｘ線ｃｔスキャナ |
| JPH11500650A (ja) | 1995-11-28 | 1999-01-19 | アナロジック コーポレーション | Ｘ線チューブのフォーカルスポットの事前較正 |
| US5579359A (en) * | 1995-12-21 | 1996-11-26 | General Electric Company | Methods and apparatus for calibrating detector cell output signals |
| US6370218B1 (en) * | 1995-12-21 | 2002-04-09 | General Electric Company | Methods and systems for determining x-ray beam position in multi-slice computed tomography scanners |
| US5706326A (en) * | 1995-12-22 | 1998-01-06 | General Electric Company | Systems and methods of determining focal spot x-axis position from projection data |
| JP3742690B2 (ja) * | 1996-08-30 | 2006-02-08 | 株式会社東芝 | Ｘ線ｃｔスキャナ |
| US5761257A (en) | 1996-12-02 | 1998-06-02 | General Electric Company | Normalizing projection data in a computed tomography system |
| JPH119584A (ja) | 1997-06-25 | 1999-01-19 | Ge Yokogawa Medical Syst Ltd | Ｘ線ビームトラッキング方法、ｘ線ビーム位置測定方法およびｘ線ｃｔ装置 |
| JPH1133019A (ja) * | 1997-07-18 | 1999-02-09 | Ge Yokogawa Medical Syst Ltd | 放射線照射・検出装置および放射線断層撮影装置 |
| JPH1189825A (ja) * | 1997-09-25 | 1999-04-06 | Ge Yokogawa Medical Systems Ltd | 放射線照射・検出装置および放射線断層撮影装置 |
| US6056437A (en) * | 1998-08-25 | 2000-05-02 | General Electric Company | Methods and apparatus for imaging system detector alignment |
-
1999
- 1999-08-27 US US09/384,169 patent/US6385279B1/en not_active Expired - Lifetime
-
2000
- 2000-08-15 IL IL13786300A patent/IL137863A/en not_active IP Right Cessation
- 2000-08-21 DE DE60041850T patent/DE60041850D1/de not_active Expired - Lifetime
- 2000-08-21 EP EP00307143A patent/EP1078599B1/en not_active Expired - Lifetime
- 2000-08-24 JP JP2000253221A patent/JP4554045B2/ja not_active Expired - Fee Related
- 2000-12-21 US US09/746,456 patent/US6359958B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1078599A1 (en) | 2001-02-28 |
| IL137863A0 (en) | 2001-10-31 |
| US20010031033A1 (en) | 2001-10-18 |
| US6359958B2 (en) | 2002-03-19 |
| JP2001095792A (ja) | 2001-04-10 |
| US6385279B1 (en) | 2002-05-07 |
| JP4554045B2 (ja) | 2010-09-29 |
| DE60041850D1 (de) | 2009-05-07 |
| EP1078599B1 (en) | 2009-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6385279B1 (en) | Methods and apparatus for positioning a CT imaging x-ray beam | |
| US6411677B1 (en) | Methods and apparatus for calibrating CT x-ray beam tracking loop | |
| US5400378A (en) | Dynamic dose control in multi-slice CT scan | |
| EP1114617B1 (en) | Methods and apparatus for automatic patient positioning | |
| US5228070A (en) | Constant image quality CT scanner with variable radiation flux density | |
| JP4079472B2 (ja) | マルチ・スライス型計算機式断層写真法システムにおいてｘ線ビームの位置を決定するシステム | |
| JP4478335B2 (ja) | Ｘ線ビームの動きを補正するための方法および装置 | |
| US7257187B2 (en) | Methods and apparatus for calibrating CT x-ray beam tracking loop | |
| US20060251216A1 (en) | Methods and systems for controlling exposure for medical imaging devices | |
| US6327331B1 (en) | Method and apparatus for analyzing CT z-axis beam positioning | |
| US5579359A (en) | Methods and apparatus for calibrating detector cell output signals | |
| JPH10295684A (ja) | 計算機式断層写真法システムにおいてデータ収集システムのゲインを変調させると共にシステム走査中に収集されたデータを補正する方法及びシステム | |
| US5608776A (en) | Methods and apparatus for twin beam computed tomography | |
| US6463115B1 (en) | Projection data correction method and apparatus, and radiation tomographic imaging method and apparatus | |
| US5610963A (en) | Methods and systems for determining the z-axis profile of a detector in a CT system | |
| IL139481A (en) | Method and device for controlling exposure to X-rays during a cardiac-adapted scan | |
| IL139758A (en) | Methods and apparatus for optimizing ct image quality with optimized data acquisition | |
| US6373919B1 (en) | Projection data correction method and apparatus, and radiation tomographic imaging method and apparatus | |
| WO2002043451A2 (en) | Methods and apparatus for tube-spit correction | |
| US6866419B2 (en) | Methods and apparatus for motion correction in imaging systems | |
| JP3946986B2 (ja) | Ｘ線コンピュータ断層撮影装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FF | Patent granted | ||
| KB | Patent renewed | ||
| MM9K | Patent not in force due to non-payment of renewal fees |