GB1445519A - Transmission ionization chamber - Google Patents

Transmission ionization chamber

Info

Publication number
GB1445519A
GB1445519A GB873674A GB873674A GB1445519A GB 1445519 A GB1445519 A GB 1445519A GB 873674 A GB873674 A GB 873674A GB 873674 A GB873674 A GB 873674A GB 1445519 A GB1445519 A GB 1445519A
Authority
GB
United Kingdom
Prior art keywords
sheet
feb
ionization chamber
electrodes
electrode
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
GB873674A
Other languages
English (en)
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1445519A publication Critical patent/GB1445519A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J47/00—Tubes for determining the presence, intensity, density or energy of radiation or particles
    • H01J47/02—Ionisation chambers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
    • A61N5/1048—Monitoring, verifying, controlling systems and methods
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Measurement Of Radiation (AREA)
  • Electron Tubes For Measurement (AREA)
GB873674A 1973-02-26 1974-02-26 Transmission ionization chamber Expired GB1445519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00335633A US3852610A (en) 1973-02-26 1973-02-26 Transmission ion chamber

Publications (1)

Publication Number Publication Date
GB1445519A true GB1445519A (en) 1976-08-11

Family

ID=23312610

Family Applications (1)

Application Number Title Priority Date Filing Date
GB873674A Expired GB1445519A (en) 1973-02-26 1974-02-26 Transmission ionization chamber

Country Status (5)

Country Link
US (1) US3852610A (https=)
JP (1) JPS5053083A (https=)
CA (1) CA994927A (https=)
FR (1) FR2219523B3 (https=)
GB (1) GB1445519A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320299A (en) 1977-06-24 1982-03-16 National Research Development Corporation Position-sensitive neutral particle sensor

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2275022A2 (fr) * 1974-06-14 1976-01-09 Cgr Mev Dispositif pour le controle de la position, de l'intensite, de l'homogeneite et de la directivite d'un faisceau de rayonnement ionisant
US3955089A (en) * 1974-10-21 1976-05-04 Varian Associates Automatic steering of a high velocity beam of charged particles
DE2505173A1 (de) * 1975-02-07 1976-08-19 Philips Patentverwaltung Roentgenaufnahmeanordnung mit einer gasgefuellten kammer
US4131799A (en) * 1977-04-01 1978-12-26 Applied Radiation Corporation Ionization chamber
SE421257B (sv) * 1980-04-23 1981-12-07 Scanditronix Instr Sett att med transmissionsjonkammare centrera ett stralknippe och bringa stralknippet att bli symmetriskt med avseende pa centrumlinjen av en kollimator, samt transmissionsjonkammare for utforande av settet
JPS5710477A (en) * 1980-06-23 1982-01-20 Fukuoka Hoshasen Kk Dosimeter for patient exposed to clinical x-rays
US4427890A (en) 1981-08-03 1984-01-24 Siemens Medical Laboratories, Inc. Dose monitor chamber for electron or X-ray radiation
US4514633A (en) * 1983-11-17 1985-04-30 Siemens Medical Laboratories, Inc. Ionization chamber for measuring the profile of a radiation field of electron or X-ray radiation
NL8503152A (nl) * 1985-11-15 1987-06-01 Optische Ind De Oude Delft Nv Dosismeter voor ioniserende straling.
DE3828639C2 (de) * 1987-08-24 1994-08-18 Mitsubishi Electric Corp Strahlentherapiegerät
US5072123A (en) * 1990-05-03 1991-12-10 Varian Associates, Inc. Method of measuring total ionization current in a segmented ionization chamber
JP2728986B2 (ja) * 1991-06-05 1998-03-18 三菱電機株式会社 放射線モニタ
JP2755527B2 (ja) 1992-07-01 1998-05-20 三菱電機株式会社 線量モニタ
US5672878A (en) * 1996-10-24 1997-09-30 Siemens Medical Systems Inc. Ionization chamber having off-passageway measuring electrodes
DE19907207A1 (de) * 1999-02-19 2000-08-31 Schwerionenforsch Gmbh Ionisationskammer für Ionenstrahlen und Verfahren zur Intensitätsüberwachung eines Ionenstrahls
CA2533680C (en) 2003-08-12 2014-09-16 Loma Linda University Medical Center Modular patient support system
US7280633B2 (en) 2003-08-12 2007-10-09 Loma Linda University Medical Center Path planning and collision avoidance for movement of instruments in a radiation therapy environment
US20090080602A1 (en) 2006-08-03 2009-03-26 Kenneth Brooks Dedicated breast radiation imaging/therapy system
US8210899B2 (en) 2006-11-21 2012-07-03 Loma Linda University Medical Center Device and method for immobilizing patients for breast radiation therapy
JP2010054309A (ja) * 2008-08-27 2010-03-11 Mitsubishi Heavy Ind Ltd 透過型線量計を用いた放射線治療装置
US9693443B2 (en) 2010-04-19 2017-06-27 General Electric Company Self-shielding target for isotope production systems
US8644571B1 (en) 2011-12-06 2014-02-04 Loma Linda University Medical Center Intensity-modulated proton therapy
EP3304127B1 (en) 2015-06-05 2023-08-02 University Health Network (UHN) Sensors with virtual spatial sensitivity for monitoring a radiation generating device
WO2017015629A1 (en) * 2015-07-22 2017-01-26 Viewray Technologies, Inc. Ion chamber for radiation measurement
US9884206B2 (en) 2015-07-23 2018-02-06 Loma Linda University Medical Center Systems and methods for intensity modulated radiation therapy
EP3423154B1 (en) 2016-03-01 2021-05-05 Intraop Medical Corporation Low energy electron beam radiation system that generates electron beams with precisely controlled and adjustable penetration depth useful for therapeutic applications
WO2021050535A1 (en) 2019-09-14 2021-03-18 Intraop Medical Corporation Methods and systems for using and controlling higher dose rate ionizing radiation in short time intervals

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1369414A (fr) * 1963-06-11 1964-08-14 Commissariat Energie Atomique Procédé et dispositif de déclenchement d'un détecteur à gaz permettant la localisation de particules nucléaires

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320299A (en) 1977-06-24 1982-03-16 National Research Development Corporation Position-sensitive neutral particle sensor

Also Published As

Publication number Publication date
CA994927A (en) 1976-08-10
FR2219523B3 (https=) 1976-04-09
JPS5053083A (https=) 1975-05-10
US3852610A (en) 1974-12-03
FR2219523A1 (https=) 1974-09-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940225