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Surface dose characterisation of the Varian Ir-192 HDR conical surface applicator set with a vertically orientated source.

Authors
  • Buchauer, Konrad
  • Henke, Guido
  • Schiefer, Hans
  • Plasswilm, Ludwig
Type
Published Article
Journal
Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]
Publication Date
Nov 01, 2014
Volume
190
Issue
12
Pages
1163–1168
Identifiers
DOI: 10.1007/s00066-014-0713-2
PMID: 25081332
Source
Medline
License
Unknown

Abstract

A central underdosed area exceeding 15 % of the prescribed dose has not been previously reported. Source tilt was observed and found to affect clinical use and possibly treatment outcome in applicators using a vertically arranged source. Surface applicators with a vertically orientated source were subject to dose irregularities that could impact on chamber-based applicator output verification procedures. We recommend film dosimetry-backed applicator commissioning to avoid systematic errors.

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