A standard Fricke dosimeter compared to an ionization chamber used for dosimetric characterization of 60Co photon beam
نویسندگان
چکیده
منابع مشابه
Dosimetric characterization of a large area pixel-segmented ionization chamber.
A pixel-segmented ionization chamber has been designed and built by Torino University and INFN. The detector features a 24 x 24 cm2 active area divided in 1024 independent cylindrical ionization chambers and can be read out in 500 micros without introducing dead time; the digital charge quantum can be adjusted between 100 fC and 800 fC. The sensitive volume of each single ionization chamber is ...
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Background: In order to deliver the precise dose to the target in radiotherapy, absorbed dose to water at the reference point should be assessed. When the calibration procedure is performed for a reference dosimeter in the 60Co beam of a Secondary Standard Dosimetry Laboratory (SSDL), the total uncertainty in absorbed dose to water (Dw) is estimated to be approximately 1.5%. This study attempts...
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introduction radiotherapy planning systems require many percentage depth dose (pdd) and profile measurements and there are various dosimeters that can be used to obtain these scans. as dose perturbation is particularly troublesome in smaller photon fields, using a low-perturbation, unshielded electron field diode (efd) in these fields is of interest. the aim of this work was to investigate the ...
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ژورنال
عنوان ژورنال: Polish Journal of Medical Physics and Engineering
سال: 2016
ISSN: 1898-0309
DOI: 10.1515/pjmpe-2016-0005