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S.A. Pawiro
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia
Materials Science & Nanotechnology

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Determination of the Dosimetric Characteristics of BATAN’s 125I Source for Brachytherapy: An Experimental Study K.Y.P. Sandy; S.A. Pawiro; D.S. Soejoko
Atom Indonesia Vol 44, No 2 (2018): August 2018
Publisher : PPIKSN-BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (209.17 KB) | DOI: 10.17146/aij.2018.719

Abstract

125I brachytherapysources withlowphotonenergies have beenwidelyusedin treatingtumors.Accordingto American Association of Physicists in Medicine Task Group No. 43 (AAPMTG-43)recommendations,dosimetric characteristic ofthe newbrachytherapysources shouldbe determined before clinical use.Inthis study, dosimetric characteristic of 125Imanufacturedby BATAN have been determined through measurement by using Thermoluminescent Dosemeter (TLD) andgafchromic XR- QA2film.The radial dosefunctionmeasurements were performedat distances rangingfrom0.5to10cmfromthe source center.The anisotropyfunctions were measuredat distances of2,3,and5cmfromthe source center forangles ranging from0to 90degree inallquadrants.The results indicated that a doserate constants measured with TLD and film are 1.05± 8 % cGy.h-1.U-1and1.01±8 % cGy.h-1.U-1, respectively.The radial dosefunctiondecreasesalongwith the increasingdistance from source andmeetsthe 5thorderpolynomial equation. The anisotropyfunction resultshows thattheanisotropyindosedistributionincreasesalongthe source axis.Thismeasurement data areinagreementwith the previousstudy on EGSnrc Monte Carloresult andhave a similar patternwithIsoAidandGMS BT-125 commercial125Isource.
Co-Authors D.S. Soejoko K.Y.P. Sandy