The Fricke dosimeter as an absorbed dose to water primary standard for Ir-192 brachytherapy
نویسندگان
چکیده
منابع مشابه
A Feasibility Study of Fricke Dosimetry as an Absorbed Dose to Water Standard for 192Ir HDR Sources
High dose rate brachytherapy (HDR) using 192Ir sources is well accepted as an important treatment option and thus requires an accurate dosimetry standard. However, a dosimetry standard for the direct measurement of the absolute dose to water for this particular source type is currently not available. An improved standard for the absorbed dose to water based on Fricke dosimetry of HDR 192Ir brac...
متن کاملTraceability to Absorbed-dose-to-water Primary Standards in Dosimetry of Brachytherapy Sources Used for Radiotherapy
− In the current brachytherapy practice, the procedures to determine the absorbed dose imparted to the patient are affected by an uncertainty higher than in radiotherapy with external beams. That could reduce the success of brachytherapy treatments. Most of the uncertainty is due to a lacking metrology: no absorbed-dose primary standards are so far available to assure direct traceability in dos...
متن کاملA Study on the Dose Distributions in Various Materials from an Ir-192 HDR Brachytherapy Source
Dose distributions of (192)Ir HDR brachytherapy in phantoms simulating water, bone, lung tissue, water-lung and bone-lung interfaces using the Monte Carlo codes EGS4, FLUKA and MCNP4C are reported. Experiments were designed to gather point dose measurements to verify the Monte Carlo results using Gafchromic film, radiophotoluminescent glass dosimeter, solid water, bone, and lung phantom. The re...
متن کاملComparison of Calibration Methods for an Iridium 192 Source (hdr) and Application to the Absorbed Dose to Water Determination
The aim of this study was to compare the high dose rate (HDR) iridium 192 source calibration in terms of reference air kerma rate with two types of ionisation chambers (a thimble chamber and a well-type chamber). Dose measurements in water have been also performed with thimble chamber and thermoluminescent dosimeters (TLD) in order to validate the absorbed dose to water calculation provided by ...
متن کاملCalibration of iridium-192 source by ionization chamber for high dose rate brachytherapy
Background: The effectiveness and safety of brachytherapy treatment is mainly concerned with the calibration of sources and their traceability to internationally accepted Standards. Secondary Standard Dosimetry Laboratory (SSDL) does not offer calibration of ionization chambers with gamma-ray spectrum of high dose rate source 192Ir . This work has been carried out to calibrate the high dose rat...
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ژورنال
عنوان ژورنال: Physics in Medicine and Biology
سال: 2015
ISSN: 0031-9155,1361-6560
DOI: 10.1088/0031-9155/60/11/4481