Document Detail


Quality assurance in brachytherapy: principles for ionization chamber measurement of absorbed dose close to brachytherapy sources.
MedLine Citation:
PMID:  8248289     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
At present there exists no standardized procedure for absorbed dose determination with ionization chambers in the vicinity of brachytherapy sources. In this paper, a modification of the IAEA formalism for external photon beams is proposed in order to make it applicable at a reference point 20 mm from brachytherapy sources as well. A non-uniformity correction factor is introduced to correct for the effects of the steep absorbed dose gradient, and it is concluded that reasonable accuracy is possible when the Bragg-Gray principle is assumed to be valid.
Authors:
H Tölli; K A Johansson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Physics in medicine and biology     Volume:  38     ISSN:  0031-9155     ISO Abbreviation:  Phys Med Biol     Publication Date:  1993 Oct 
Date Detail:
Created Date:  1994-01-03     Completed Date:  1994-01-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0401220     Medline TA:  Phys Med Biol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1475-83     Citation Subset:  IM    
Affiliation:
Department of Radiation Physics, University of Göteborg, Sahlgren Hospital, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Brachytherapy / standards*
Humans
Quality Assurance, Health Care*
Radiometry / instrumentation,  methods*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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