IL121615A - Methods and apparatus for modulating x-ray tube current - Google Patents
Methods and apparatus for modulating x-ray tube currentInfo
- Publication number
- IL121615A IL121615A IL12161597A IL12161597A IL121615A IL 121615 A IL121615 A IL 121615A IL 12161597 A IL12161597 A IL 12161597A IL 12161597 A IL12161597 A IL 12161597A IL 121615 A IL121615 A IL 121615A
- Authority
- IL
- Israel
- Prior art keywords
- ray
- ray tube
- tube current
- photon
- scaling factor
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/48—Diagnostic techniques
- A61B6/488—Diagnostic techniques involving pre-scan acquisition
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. 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 for radiation diagnosis, e.g. 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
- A61B6/544—Control of apparatus or devices for radiation diagnosis involving control of exposure dependent on patient size
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/34—Anode current, heater current or heater voltage of X-ray tube
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/26—Measuring, controlling or protecting
- H05G1/30—Controlling
- H05G1/38—Exposure time
- H05G1/42—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube
- H05G1/44—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube in which the switching instant is determined by measuring the amount of radiation directly
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL13865297A IL138652A (en) | 1996-09-05 | 1997-08-25 | System for dynamic adjustment of a component in the imaging system of computerized tomography |
IL13865200A IL138652A0 (en) | 1996-09-05 | 2000-09-24 | System for dynamically adjusting a component in a computed tomography imaging system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/706,613 US5696807A (en) | 1996-09-05 | 1996-09-05 | Methods and apparatus for modulating x-ray tube current |
Publications (2)
Publication Number | Publication Date |
---|---|
IL121615A0 IL121615A0 (en) | 1998-02-08 |
IL121615A true IL121615A (en) | 2001-05-20 |
Family
ID=24838348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL12161597A IL121615A (en) | 1996-09-05 | 1997-08-25 | Methods and apparatus for modulating x-ray tube current |
Country Status (5)
Country | Link |
---|---|
US (1) | US5696807A (zh) |
JP (1) | JP4187289B2 (zh) |
CN (2) | CN1166262C (zh) |
DE (1) | DE19737408A1 (zh) |
IL (1) | IL121615A (zh) |
Families Citing this family (65)
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---|---|---|---|---|
WO1997031335A1 (en) * | 1996-02-21 | 1997-08-28 | Lunar Corporation | X-ray imaging system |
IL120097A0 (en) * | 1997-01-29 | 1997-04-15 | Elscint Ltd | Variable current CT scanning |
US5867555A (en) * | 1997-03-04 | 1999-02-02 | Siemens Aktiengesellschaft | Adaptive dose modulation during CT scanning |
JP3244458B2 (ja) * | 1997-09-30 | 2002-01-07 | ジーイー横河メディカルシステム株式会社 | X線断層撮影装置 |
US6373919B1 (en) | 1999-08-10 | 2002-04-16 | Ge Yokogawa Medical Systems, Limited | Projection data correction method and apparatus, and radiation tomographic imaging method and apparatus |
JP3789728B2 (ja) * | 1999-08-10 | 2006-06-28 | ジーイー横河メディカルシステム株式会社 | プロジェクションデータ補正方法および装置並びに放射線断層撮像装置 |
JP4519254B2 (ja) * | 2000-04-03 | 2010-08-04 | 株式会社日立メディコ | X線ct装置 |
EP1324694A1 (en) * | 2000-10-02 | 2003-07-09 | Koninklijke Philips Electronics N.V. | Method and x-ray apparatus for optimally imaging the human anatomy |
JP2004523329A (ja) * | 2001-04-13 | 2004-08-05 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | 患者の心血管系の画像の質を向上させるためのx線装置、コンピュータプログラム及び方法 |
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 |
US6507639B1 (en) | 2001-08-30 | 2003-01-14 | Siemens Aktiengesellschaft | Method and apparatus for modulating the radiation dose from x-ray tube |
US7042977B2 (en) | 2001-09-05 | 2006-05-09 | Koninklijke Philips Electronics N.V. | Dose control in CT-images |
JP4309631B2 (ja) * | 2001-10-22 | 2009-08-05 | 株式会社東芝 | X線コンピュータトモグラフィ装置 |
US6904127B2 (en) * | 2001-11-21 | 2005-06-07 | General Electric Company | System and method of medical imaging having default noise index override capability |
US6850588B2 (en) * | 2002-07-25 | 2005-02-01 | Ge Medical Systems Global Technology Company, Llc | Radiation exposure limiting scheme |
US6775352B2 (en) * | 2002-08-16 | 2004-08-10 | Ge Medical Systems Global Technology Company, Llc | Method and system for implementing variable x-ray intensity modulation schemes for imaging systems |
US6744846B2 (en) * | 2002-09-26 | 2004-06-01 | Siemens Aktiengesellschaft | Method and apparatus for automatic exposure control in CT scanning |
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 |
JP4490645B2 (ja) * | 2003-04-09 | 2010-06-30 | 株式会社東芝 | X線コンピュータ断層撮影装置 |
US6956929B2 (en) * | 2003-09-11 | 2005-10-18 | Siemens Aktiengesellschaft | Method for controlling modulation of X-ray tube current using a single topogram |
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 |
US7068751B2 (en) * | 2003-10-27 | 2006-06-27 | General Electric Company | System and method of determining a center of mass of an imaging subject for x-ray flux management control |
US7068750B2 (en) * | 2003-10-27 | 2006-06-27 | General Electric Company | System and method of x-ray flux management control |
US6990171B2 (en) * | 2003-10-27 | 2006-01-24 | General Electric Company | System and method of determining a user-defined region-of-interest of an imaging subject for x-ray flux management control |
US7313217B2 (en) * | 2003-10-27 | 2007-12-25 | General Electric Company | System and method of collecting imaging subject positioning information for x-ray flux control |
JP4611314B2 (ja) * | 2003-11-25 | 2011-01-12 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Ctカルシウムスコアリングにおける患者のbmiの関数とする自動線量適合 |
JP2005185718A (ja) * | 2003-12-26 | 2005-07-14 | Ge Medical Systems Global Technology Co Llc | 放射線断層撮像装置および撮像方法 |
US6990172B2 (en) * | 2004-02-19 | 2006-01-24 | General Electric Company | Method and apparatus to determine tube current modulation profile for radiographic imaging |
US7215733B2 (en) * | 2004-07-23 | 2007-05-08 | Kabushiki Kaisha Toshiba | X-ray computed tomography apparatus |
JP2006102299A (ja) * | 2004-10-07 | 2006-04-20 | Ge Medical Systems Global Technology Co Llc | X線線量補正方法およびx線ct装置 |
JP2008516660A (ja) * | 2004-10-15 | 2008-05-22 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | コンピュータ断層撮影法 |
JP4739738B2 (ja) * | 2004-12-01 | 2011-08-03 | 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 | 線量評価方法およびx線ct装置 |
DE102005005285B4 (de) * | 2005-02-04 | 2014-02-13 | Siemens Aktiengesellschaft | Verfahren für einen ein Aufnahmesystem aufweisenden Computertomographen zur Abtastung eines Objektes |
JP2006320523A (ja) * | 2005-05-19 | 2006-11-30 | Ge Medical Systems Global Technology Co Llc | シャトルモードヘリカルスキャンのスキャンパラメータ設定方法およびx線ct装置 |
US20070147579A1 (en) * | 2005-12-23 | 2007-06-28 | De Man Bruno K B | Method and system for radiographic imaging with organ-based radiation profile prescription |
JP4509971B2 (ja) * | 2006-06-09 | 2010-07-21 | 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 |
CN101327128B (zh) * | 2007-06-22 | 2010-12-08 | Ge医疗系统环球技术有限公司 | X射线ct装置的扫描检测装置及其系统和运行方法 |
JP5184834B2 (ja) * | 2007-07-18 | 2013-04-17 | 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 |
JP5389345B2 (ja) * | 2007-10-04 | 2014-01-15 | 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 |
CN102512191B (zh) * | 2007-12-28 | 2014-07-23 | Ge医疗系统环球技术有限公司 | X射线ct装置和x射线管电流确定方法 |
CN101467888B (zh) * | 2007-12-28 | 2013-03-27 | Ge医疗系统环球技术有限公司 | X射线ct装置和x射线管电流确定方法 |
CN101472381B (zh) * | 2007-12-29 | 2013-03-27 | Ge医疗系统环球技术有限公司 | 控制x射线ct系统中的x射线曝光的方法 |
CN101730372B (zh) * | 2008-10-14 | 2013-04-03 | 上海西门子医疗器械有限公司 | 球管电流调制方法和球管电流调制系统 |
JP5675117B2 (ja) * | 2009-02-17 | 2015-02-25 | 株式会社東芝 | X線ct装置及びx線ct装置の制御プログラム |
US20140072108A1 (en) * | 2010-07-16 | 2014-03-13 | David P. Rohler | Methods and apparatus for extended low contrast detectability for radiographic imaging systems |
WO2011013031A1 (en) * | 2009-07-29 | 2011-02-03 | Koninklijke Philips Electronics N.V. | X-ray examination device and method |
JP5535598B2 (ja) * | 2009-11-27 | 2014-07-02 | 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 |
EP2335593A1 (en) * | 2009-12-15 | 2011-06-22 | Koninklijke Philips Electronics N.V. | Computed tomography apparatus |
DE102010062459B4 (de) | 2010-12-06 | 2018-08-02 | Siemens Healthcare Gmbh | Verfahren für ein Computertomographiegerät zur Reduzierung der Belastung einer Komponente, Rechenprogramm, Datenträger und Computertomographiegerät |
CN102540276B (zh) * | 2010-12-29 | 2014-11-26 | 通用电气公司 | 软场层析成像系统和方法 |
EP3013237B1 (en) | 2013-06-26 | 2020-04-29 | Koninklijke Philips N.V. | Imaging apparatus |
DE102014211150A1 (de) * | 2014-06-11 | 2015-12-17 | Siemens Aktiengesellschaft | Verfahren zum Betreiben eines Computertomographen und Computertomograph |
US9592020B2 (en) * | 2014-06-23 | 2017-03-14 | Palodex Group Oy | System and method of artifact correction in 3D imaging |
US9486173B2 (en) | 2014-08-05 | 2016-11-08 | General Electric Company | Systems and methods for adjustable view frequency computed tomography imaging |
GB201417121D0 (en) | 2014-09-26 | 2014-11-12 | Nikon Metrology Nv | High voltage generator |
KR101686635B1 (ko) * | 2014-12-03 | 2016-12-14 | 삼성전자주식회사 | 의료 영상 처리 장치 및 그에 따른 의료 영상 처리 방법 |
US9962134B2 (en) * | 2015-10-28 | 2018-05-08 | Medtronic Navigation, Inc. | Apparatus and method for maintaining image quality while minimizing X-ray dosage of a patient |
US10085698B2 (en) * | 2016-01-26 | 2018-10-02 | Genereal Electric Company | Methods and systems for automated tube current modulation |
US10499873B2 (en) | 2016-12-20 | 2019-12-10 | General Electric Company | System and method for performing a bone density scan of a patient |
CN106725570B (zh) * | 2016-12-30 | 2019-12-20 | 上海联影医疗科技有限公司 | 成像方法及系统 |
US10973489B2 (en) * | 2017-09-29 | 2021-04-13 | General Electric Company | CT imaging system and method using a task-based image quality metric to achieve a desired image quality |
US10492751B2 (en) | 2018-02-13 | 2019-12-03 | FMI Medical Systems Co., Ltd. | Method and apparatus for modulating x-ray tube current in computed tomography |
JP7258473B2 (ja) * | 2018-05-01 | 2023-04-17 | キヤノンメディカルシステムズ株式会社 | X線ct装置及び撮影条件管理装置 |
JP7224880B2 (ja) * | 2018-12-04 | 2023-02-20 | キヤノンメディカルシステムズ株式会社 | X線撮影装置 |
US11147528B2 (en) * | 2019-08-16 | 2021-10-19 | GE Precision Healthcare LLC | Methods and systems for X-ray tube conditioning |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4454606A (en) * | 1983-05-23 | 1984-06-12 | General Electric Company | Reconfigurable x-ray AEC compensation |
US4748649A (en) * | 1986-08-04 | 1988-05-31 | Picker International, Inc. | Phototiming control method and apparatus |
US4942596A (en) * | 1988-08-31 | 1990-07-17 | General Electric Company | Adaptive enhancement of x-ray images |
US5432833A (en) * | 1994-05-19 | 1995-07-11 | Bennett X-Ray Technologies | Automatic exposure control system for tomographic applications |
-
1996
- 1996-09-05 US US08/706,613 patent/US5696807A/en not_active Expired - Lifetime
-
1997
- 1997-08-25 IL IL12161597A patent/IL121615A/en not_active IP Right Cessation
- 1997-08-27 DE DE19737408A patent/DE19737408A1/de not_active Withdrawn
- 1997-09-04 JP JP23876697A patent/JP4187289B2/ja not_active Expired - Fee Related
- 1997-09-05 CN CNB971179433A patent/CN1166262C/zh not_active Expired - Fee Related
- 1997-09-05 CN CNB2004100050685A patent/CN1289036C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1522669A (zh) | 2004-08-25 |
US5696807A (en) | 1997-12-09 |
JPH10149895A (ja) | 1998-06-02 |
CN1289036C (zh) | 2006-12-13 |
CN1180292A (zh) | 1998-04-29 |
IL121615A0 (en) | 1998-02-08 |
CN1166262C (zh) | 2004-09-08 |
JP4187289B2 (ja) | 2008-11-26 |
DE19737408A1 (de) | 1998-03-12 |
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Legal Events
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FF | Patent granted | ||
KB | Patent renewed | ||
KB | Patent renewed | ||
MM9K | Patent not in force due to non-payment of renewal fees |