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Verification and uniformity control of doses for Sr-90/ Y-90 intravascular brachytherapy sources using radiochromic film dosimetry

Date
2008
Author
Ahmed, Asm Sabbir
DEMİR, Mustafa
Gurmen, Tevfi K.
DEMİR, Bayram
Babalik, Erhan
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Abstract
Intravascular brachytherapy (IVBT) is a useful treatment modality for the recurrence of in-stent restenosis following drug-eluting stents (DES) or IVBT failure. The objective of this study was to measure the dose rate of Sr-90/Y-90 IVBT sources for comparison with that given by the manufacturer and to control the dose uniformities of these sources along the source axis. The dose rates of Sr-90/Y-90 beta sources were measured with a radiochromic film in a custom-made phantom. The films for calibration were irradiated using Co-60 photon beams. The results for the three sources were 4.5%, 2.3%, and 3.5% higher than the corresponding certificate values. Maximum and minimum of the dose rates varied within +/- 10% of those at source center; and maximum dose discrepancy for the first Sr-90/Y-90 source train was 8.2%; for the second source train, 7.1%; and for the third source train, 5.1%. Our study showed that the dose rates given by the manufacturer for the three Sr-90/Y-90 IVBT sources were reliable and dose uniformities were within +/- 10% along two thirds of the treatment length.
URI
http://hdl.handle.net/20.500.12627/180296
https://doi.org/10.4103/0971-6203.41193
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Creative Commons Lisansı

İstanbul Üniversitesi Akademik Arşiv Sistemi (ilgili içerikte aksi belirtilmediği sürece) Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.

DSpace software copyright © 2002-2016  DuraSpace
Contact Us | Send Feedback
Theme by 
Atmire NV