Dosimetric evaluation of newly developed well-type ionization chamber for use in the calibration of brachytherapy sources

Autor:	Sathiyan Saminathan, Henry Finlay Godson, Retna Ponmalar, Ravikumar Manickam, James Mazarello
Jazyk:	angličtina
Rok vydání:	2016
Předmět:	Air-kerma strength brachytherapy high-dose rate reference air-kerma rate well-type ionization chamber Medical physics. Medical radiology. Nuclear medicine R895-920
Zdroj:	Journal of Medical Physics, Vol 41, Iss 4, Pp 234-239 (2016)
Druh dokumentu:	article
ISSN:	0971-6203 1998-3913
DOI:	10.4103/0971-6203.195187
Popis:	The well-type ionization chamber has been designed for convenient use in brachytherapy source strength calibration. The chamber has a volume of 240 cm 3 , weight of 2.5 kg, and is open to atmospheric conditions. The well-type ionization chamber dosimetric characteristics such as leakage current, stability, scattering effect, ion collection efficiency, and nominal response with energy were studied. The evaluated dosimetric characteristics of well-type ionization chamber were compared with two other commercially available well-type ionization chambers. The study shows that the newly developed well-type ionization chamber is reliable for air-kerma strength calibration. The results obtained confirm that this chamber can be used for the calibrations of high-dose rate brachytherapy sources.
Databáze:	Directory of Open Access Journals
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