Document Detail


Quality assurance in brachytherapy: the displacement effect in the vicinity of 60Co and 192Ir brachytherapy sources.
MedLine Citation:
PMID:  8248290     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Cylindrical ionization chambers with varying radii have been used to determine the displacement effect at distances between 10 mm and 40 mm from 60Co and 192Ir brachytherapy sources. Agreement with published values of the displacement factor for external 60Co beams is obtained. The shift between the centre of the ionization chamber and the effective point of measurement is found to be only a few per cent of the internal radius of the cylindrical ionization chamber. The shift is found to be dependent on the source to ionization chamber centre distance.
Authors:
H Tölli; K A Johansson
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:  1485-92     Citation Subset:  IM    
Affiliation:
Department of Radiation Physics, University of Göteborg, Sahlgren Hospital, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Brachytherapy / standards*
Cobalt Radioisotopes*
Humans
Iridium Radioisotopes*
Quality Assurance, Health Care*
Radiometry / instrumentation*
Chemical
Reg. No./Substance:
0/Cobalt Radioisotopes; 0/Iridium Radioisotopes

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


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