DE69937175T2 - Vorrichtung zur Dosisüberprüfung bei einem bildgebenden System - Google Patents
Vorrichtung zur Dosisüberprüfung bei einem bildgebenden System Download PDFInfo
- Publication number
- DE69937175T2 DE69937175T2 DE69937175T DE69937175T DE69937175T2 DE 69937175 T2 DE69937175 T2 DE 69937175T2 DE 69937175 T DE69937175 T DE 69937175T DE 69937175 T DE69937175 T DE 69937175T DE 69937175 T2 DE69937175 T2 DE 69937175T2
- Authority
- DE
- Germany
- Prior art keywords
- collimator
- detector
- aperture
- determining
- ray
- 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.)
- Expired - Lifetime
Links
- 238000003384 imaging method Methods 0.000 title claims description 25
- 238000012795 verification Methods 0.000 title description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000008859 change Effects 0.000 description 20
- 238000002591 computed tomography Methods 0.000 description 15
- 238000005259 measurement Methods 0.000 description 6
- 238000013170 computed tomography imaging Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 230000000875 corresponding effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000004980 dosimetry Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011076 safety test Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 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]
-
- 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
- A61B6/06—Diaphragms
-
- 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
-
- 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
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Radiology & Medical Imaging (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (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)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Measurement Of Radiation (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US140109 | 1998-08-25 | ||
| US09/140,109 US6141402A (en) | 1998-08-25 | 1998-08-25 | Methods and apparatus for dose verification in an imaging system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69937175D1 DE69937175D1 (de) | 2007-11-08 |
| DE69937175T2 true DE69937175T2 (de) | 2008-06-26 |
Family
ID=22489798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69937175T Expired - Lifetime DE69937175T2 (de) | 1998-08-25 | 1999-08-20 | Vorrichtung zur Dosisüberprüfung bei einem bildgebenden System |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6141402A (enExample) |
| EP (1) | EP0982000B1 (enExample) |
| JP (1) | JP4402212B2 (enExample) |
| DE (1) | DE69937175T2 (enExample) |
| IL (1) | IL131500A (enExample) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6260999B1 (en) * | 1999-07-26 | 2001-07-17 | Siemens Medical Systems, Inc. | Isocenter localization using electronic portal imaging |
| US6310938B1 (en) * | 1999-08-27 | 2001-10-30 | General Electric Company | Methods and apparatus for calibrating CT x-ray beam tracking loop |
| JP3977972B2 (ja) * | 1999-12-13 | 2007-09-19 | 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 | 断層撮影用スキャン条件決定方法、断層撮影方法およびｘ線ｃｔ装置 |
| JP3961249B2 (ja) | 2001-08-28 | 2007-08-22 | 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、ガントリ装置、操作コンソール及びその制御方法並びにプログラムコード、記憶媒体 |
| JP2004173924A (ja) * | 2002-11-27 | 2004-06-24 | Ge Medical Systems Global Technology Co Llc | Ｘ線制御方法およびｘ線画像撮影装置 |
| JP3864139B2 (ja) * | 2002-12-20 | 2006-12-27 | 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装置および被曝線量算出方法 |
| US7254215B2 (en) * | 2003-10-28 | 2007-08-07 | Ge Medical Systems Global Technology Company, Llc | Systems and methods for reducing radiation dosage |
| US7020243B2 (en) * | 2003-12-05 | 2006-03-28 | Ge Medical Systems Global Technology Company Llc | Method and system for target angle heel effect compensation |
| US7372942B2 (en) * | 2004-03-29 | 2008-05-13 | Siemens Medical Solutions Usa, Inc. | Medical imaging system with dosimetry for estimating circuit board life |
| US8961461B2 (en) | 2004-05-27 | 2015-02-24 | Baxter International Inc. | Multi-state alarm system for a medical pump |
| US7927313B2 (en) | 2004-05-27 | 2011-04-19 | Baxter International Inc. | Medical device configuration based on recognition of identification information |
| JP4629519B2 (ja) * | 2005-07-12 | 2011-02-09 | 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 | 放射線撮影装置およびスキャン条件設定装置 |
| FR2956216B1 (fr) * | 2010-02-08 | 2012-04-20 | Commissariat Energie Atomique | Dispositif de detection de rayonnements photoniques, et procedes de dimensionnement et de fonctionnement d'un tel dispositif |
| CN113219510B (zh) * | 2021-05-07 | 2024-05-31 | 苏州德锐特成像技术有限公司 | 一种核辐射成像准直器微孔定位方法及核辐射成像装置 |
| US11864941B2 (en) | 2021-10-04 | 2024-01-09 | GE Precision Healthcare LLC | System and method for collimator screening in a computed tomography system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4872188A (en) * | 1987-11-27 | 1989-10-03 | Picker International, Inc. | Registration correction for radiographic scanners with sandwich detectors |
| US4991189A (en) * | 1990-04-16 | 1991-02-05 | General Electric Company | Collimation apparatus for x-ray beam correction |
| US5982846A (en) * | 1998-04-13 | 1999-11-09 | General Electric Company | Methods and apparatus for dose reduction in a computed tomograph |
| US6061419A (en) * | 1998-08-25 | 2000-05-09 | General Electric Company | Methods and apparatus for noise compensation in an imaging system |
| US6061420A (en) * | 1998-08-25 | 2000-05-09 | General Electric Company | Methods and apparatus for graphical Rx in a multislice imaging system |
| US6056437A (en) * | 1998-08-25 | 2000-05-02 | General Electric Company | Methods and apparatus for imaging system detector alignment |
-
1998
- 1998-08-25 US US09/140,109 patent/US6141402A/en not_active Expired - Lifetime
-
1999
- 1999-08-19 IL IL13150099A patent/IL131500A/xx not_active IP Right Cessation
- 1999-08-20 EP EP99306637A patent/EP0982000B1/en not_active Expired - Lifetime
- 1999-08-20 DE DE69937175T patent/DE69937175T2/de not_active Expired - Lifetime
- 1999-08-23 JP JP23487699A patent/JP4402212B2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000083940A (ja) | 2000-03-28 |
| EP0982000A1 (en) | 2000-03-01 |
| DE69937175D1 (de) | 2007-11-08 |
| IL131500A0 (en) | 2001-01-28 |
| IL131500A (en) | 2003-06-24 |
| JP4402212B2 (ja) | 2010-01-20 |
| US6141402A (en) | 2000-10-31 |
| EP0982000B1 (en) | 2007-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition |