CA927020A - Device at a radiographic apparatus for equalizing the average exposure - Google Patents

Device at a radiographic apparatus for equalizing the average exposure

Info

Publication number
CA927020A
CA927020A CA104895A CA104895A CA927020A CA 927020 A CA927020 A CA 927020A CA 104895 A CA104895 A CA 104895A CA 104895 A CA104895 A CA 104895A CA 927020 A CA927020 A CA 927020A
Authority
CA
Canada
Prior art keywords
equalizing
radiographic apparatus
average exposure
exposure
average
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
Application number
CA104895A
Other languages
English (en)
Other versions
CA104895S (en
Inventor
Jacobson Bertil
Edholm Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Medinova AB
Original Assignee
Medinova AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from SE7001651A external-priority patent/SE372884B/xx
Application filed by Medinova AB filed Critical Medinova AB
Application granted granted Critical
Publication of CA927020A publication Critical patent/CA927020A/en
Expired legal-status Critical Current

Links

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
    • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light 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
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4035—Arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Medical Informatics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Pathology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Public Health (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Pulmonology (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
CA104895A 1970-02-09 1971-02-09 Device at a radiographic apparatus for equalizing the average exposure Expired CA927020A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7001651A SE372884B (de) 1970-02-09 1970-02-09
SE1135670 1970-08-20

Publications (1)

Publication Number Publication Date
CA927020A true CA927020A (en) 1973-05-22

Family

ID=26654277

Family Applications (1)

Application Number Title Priority Date Filing Date
CA104895A Expired CA927020A (en) 1970-02-09 1971-02-09 Device at a radiographic apparatus for equalizing the average exposure

Country Status (10)

Country Link
US (1) US3717768A (de)
JP (1) JPS5142509B1 (de)
AT (1) AT321420B (de)
BE (1) BE762648A (de)
CA (1) CA927020A (de)
CH (1) CH522349A (de)
DE (1) DE2105259A1 (de)
FR (1) FR2078378A5 (de)
GB (1) GB1330202A (de)
NL (1) NL7101633A (de)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921001A (en) * 1972-08-21 1975-11-18 Medinova Ab Of Sweden Screening or aperture device for an x-ray apparatus
US3917954A (en) * 1973-11-09 1975-11-04 Gundersen Clinic Ltd External x-ray beam flattening filter
SE390697B (sv) * 1974-04-10 1977-01-17 Scandiatronix Instr Ab Anordning for paverkan av energifordelning och rumslig fordelning hos hogenergetisk partikelstralning vid bestralning av en begrensad volym
US4181858A (en) * 1977-12-30 1980-01-01 Emi Limited Adjustable compensating device for radiographic apparatus
EP0016491B1 (de) * 1979-03-27 1982-11-17 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Anlage zur Sichtbarmachung von bewegten Teilen
US4288695A (en) * 1979-04-13 1981-09-08 Technicare Corporation Computerized tomographic scanner with shaped radiation filter
DE2951857A1 (de) * 1979-12-21 1981-07-02 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikanlage mit einer aufnahmeeinheit mit einer roentgenroehre, die ein faecherfoermiges strahlenbuendel aussenden kann
FR2514519A1 (fr) * 1981-10-14 1983-04-15 Selectrem Etu Applic Electro M Support de filtre pour appareil de radiographie
US4472828A (en) * 1982-07-23 1984-09-18 Minnesota Mining And Manufacturing Company X-Ray filter for chest X-rays
DE3239379A1 (de) * 1982-10-23 1984-04-26 Helmut Fischer GmbH & Co Institut für Elektronik und Meßtechnik, 7032 Sindelfingen Vorrichtung zum messen der dicke duenner schichten
US4497062A (en) * 1983-06-06 1985-01-29 Wisconsin Alumni Research Foundation Digitally controlled X-ray beam attenuation method and apparatus
DE3339775A1 (de) * 1983-11-03 1985-05-15 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikgeraet mit strahlenfiltern
FR2561516B1 (fr) * 1984-03-20 1988-03-04 Thomson Cgr Installation de radiologie a filtre compensateur
FR2665545B1 (fr) * 1990-08-06 1993-09-24 Technomed Int Sa Procede et appareil de determination de la position d'une cible par rapport a un repere de reference de coordonnees connues sans connaitre a priori la position d'une source de rayonnement.
WO1991007913A1 (en) * 1989-11-24 1991-06-13 Technomed International A method and apparatus for determining the position of a target relative to known co-ordinates
US5282254A (en) * 1992-06-29 1994-01-25 Siemens Corporate Research, Inc. Method for locating an edge portion of an aperture in a filter member in X-ray fluoroscopy apparatus
US5278887A (en) * 1992-06-29 1994-01-11 Siemens Corporate Research, Inc. Apparatus and method for reducing X-ray dosage during a fluoroscopic procedure
FI103176B1 (fi) * 1993-06-15 1999-05-14 Planmeca Oy Pehmytkudossuodinlaite kefalostaattiin
DE29509546U1 (de) * 1995-06-10 1995-08-17 Laser Applikationan Gmbh Röntgeneinrichtung
DE19534292C2 (de) * 1995-09-15 2000-02-17 Siemens Ag Röntgenstrahlenfilter
US6647095B2 (en) * 2002-04-02 2003-11-11 Ge Medical Systems Global Technology Co., Llc Method and apparatus for optimizing dosage to scan subject
US6836535B2 (en) * 2002-04-22 2004-12-28 General Electric Company Method and apparatus of modulating the filtering of radiation during radiographic imaging
US20040015073A1 (en) * 2002-04-26 2004-01-22 Michael Schell Target repositioning error correction filter and method
DE10259696B4 (de) * 2002-12-18 2018-07-05 Immobiliengesellschaft Helmut Fischer Gmbh & Co. Kg Vorrichtung zum Messen der Dicke dünner Schichten
JP4041025B2 (ja) * 2003-07-15 2008-01-30 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線分布調整フィルタ装置およびそれを用いたｘ線ｃｔ装置
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
US20100020928A1 (en) * 2004-12-28 2010-01-28 Koninklijke Philips Electronics, N.V. medical 3d x-ray imaging device with a rotating c-shaped arm
US20060245548A1 (en) * 2005-04-22 2006-11-02 Joseph Callerame X-ray backscatter inspection with coincident optical beam
US7535987B2 (en) * 2005-06-30 2009-05-19 Kabushiki Kaisha Toshiba X-ray CT apparatus
JP4891673B2 (ja) * 2005-06-30 2012-03-07 株式会社東芝 Ｘ線ｃｔ装置
RU2491021C2 (ru) * 2007-12-28 2013-08-27 Конинклейке Филипс Электроникс Н.В. Фильтрующее устройство для компьютерных томографических систем
JP5503919B2 (ja) * 2009-08-06 2014-05-28 株式会社東芝 Ｘ線ｃｔ装置
US8184775B1 (en) * 2010-10-29 2012-05-22 General Electric Company Dynamic collimator for wide coverage and low dose cardiac CT imaging
US9357973B2 (en) 2011-06-30 2016-06-07 Koninklijke Philips N.V. X-ray beam transmission profile shaper
CN103093850B (zh) * 2011-10-31 2017-04-26 Ge医疗系统环球技术有限公司 一种用于计算机断层摄影系统的滤过器组件以及该系统
JP2015513423A (ja) * 2012-03-03 2015-05-14 コントローラッド システムズ、インコーポレイテッドＣｏｎｔｒｏｌｒａｄ Ｓｙｓｔｅｍｓ，Ｉｎｃ． Ｘ線低減システム
JP2013255642A (ja) * 2012-06-12 2013-12-26 Canon Inc 放射線発生装置及び放射線撮影システム
US10667767B2 (en) 2014-05-02 2020-06-02 General Electric Company Systems and methods for selecting bowtie filter configuration
JP6707048B2 (ja) * 2017-03-22 2020-06-10 富士フイルム株式会社 マンモグラフィ装置
DE102017213610A1 (de) * 2017-08-04 2019-02-07 Siemens Healthcare Gmbh Vorrichtung für ein Röntgengerät
CN110477934A (zh) * 2018-05-14 2019-11-22 苏州达影医疗设备有限公司 复合x线滤片的乳腺x光机
EP3626175A1 (de) * 2018-09-19 2020-03-25 Koninklijke Philips N.V. Strahlformungsfilter für cbct

Also Published As

Publication number Publication date
GB1330202A (en) 1973-09-12
CH522349A (de) 1972-06-15
DE2105259A1 (de) 1971-08-19
US3717768A (en) 1973-02-20
NL7101633A (de) 1971-08-11
AT321420B (de) 1975-03-25
FR2078378A5 (de) 1971-11-05
BE762648A (fr) 1971-07-16
JPS5142509B1 (de) 1976-11-16

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