CA994927A - Transmission ion chamber - Google Patents

Transmission ion chamber

Info

Publication number
CA994927A
CA994927A CA193,360A CA193360A CA994927A CA 994927 A CA994927 A CA 994927A CA 193360 A CA193360 A CA 193360A CA 994927 A CA994927 A CA 994927A
Authority
CA
Canada
Prior art keywords
ion chamber
transmission ion
transmission
chamber
ion
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
CA193,360A
Inventor
Raymond D. Mcintyre
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
Priority to CA245,235A priority Critical patent/CA1002669A/en
Application granted granted Critical
Publication of CA994927A publication Critical patent/CA994927A/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
CA193,360A 1973-02-26 1974-02-25 Transmission ion chamber Expired CA994927A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA245,235A CA1002669A (en) 1973-02-26 1976-02-09 Transmission ion chamber

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
CA994927A true CA994927A (en) 1976-08-10

Family

ID=23312610

Family Applications (1)

Application Number Title Priority Date Filing Date
CA193,360A Expired CA994927A (en) 1973-02-26 1974-02-25 Transmission ion chamber

Country Status (5)

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

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2275022A2 (en) * 1974-06-14 1976-01-09 Cgr Mev DEVICE FOR MONITORING THE POSITION, INTENSITY, HOMOGENEITY AND DIRECTIVITY OF AN IONIZING RADIATION BEAM
US3955089A (en) * 1974-10-21 1976-05-04 Varian Associates Automatic steering of a high velocity beam of charged particles
DE2505173A1 (en) * 1975-02-07 1976-08-19 Philips Patentverwaltung X-RAY ASSEMBLY WITH A GAS-FILLED CHAMBER
US4131799A (en) * 1977-04-01 1978-12-26 Applied Radiation Corporation Ionization chamber
SE421257B (en) * 1980-04-23 1981-12-07 Scanditronix Instr SET WITH A TRANSMISSION CHAMBER CENTERING A BEAM AND BRING THE BEAM TO BE SYMMETRIC WITH REGARD TO THE CENTER LINE OF A COLLIMATOR, AND THE TRANSMISSION CHAMBER FOR EXECUTING THE SET
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 (en) * 1985-11-15 1987-06-01 Optische Ind De Oude Delft Nv DOSEMETER FOR IONIZING RADIATION.
DE3828639C2 (en) * 1987-08-24 1994-08-18 Mitsubishi Electric Corp Radiotherapy device
US5072123A (en) * 1990-05-03 1991-12-10 Varian Associates, Inc. Method of measuring total ionization current in a segmented ionization chamber
JP2728986B2 (en) * 1991-06-05 1998-03-18 三菱電機株式会社 Radiation monitor
US5672878A (en) * 1996-10-24 1997-09-30 Siemens Medical Systems Inc. Ionization chamber having off-passageway measuring electrodes
DE19907207A1 (en) * 1999-02-19 2000-08-31 Schwerionenforsch Gmbh Ionization chamber for ion beams and method for monitoring the intensity of an ion beam
WO2005018734A2 (en) 2003-08-12 2005-03-03 Loma Linda University Medical Center Patient positioning system for radiation therapy system
CA2967536C (en) 2003-08-12 2020-08-25 Vision Rt Limited Patient positioning system for radiation therapy system
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 (en) * 2008-08-27 2010-03-11 Mitsubishi Heavy Ind Ltd Radiotherapy apparatus using transmission type dosimeter
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
CA3025564C (en) 2015-06-05 2023-09-12 University Health Network Sensors with virtual spatial sensitivity for monitoring a radiation generating device
AU2016297254A1 (en) 2015-07-22 2018-02-15 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
US10485993B2 (en) 2016-03-01 2019-11-26 Intraop Medical Corporation Low energy electron beam radiation system that generates electron beams with precisely controlled and adjustable penetration depth useful for therapeutic applications

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1369414A (en) * 1963-06-11 1964-08-14 Commissariat Energie Atomique Method and device for triggering a gas detector for locating nuclear particles

Also Published As

Publication number Publication date
FR2219523A1 (en) 1974-09-20
GB1445519A (en) 1976-08-11
US3852610A (en) 1974-12-03
JPS5053083A (en) 1975-05-10
FR2219523B3 (en) 1976-04-09

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