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DETERMINATION OF SOURCE-POSITION TIMES IN INTRACAVITARY RADIOTHERAPY.

dc.contributor.authorPistorius S.
dc.contributor.authorGroenewald W.A.
dc.date.accessioned2011-05-15T16:18:21Z
dc.date.available2011-05-15T16:18:21Z
dc.date.issued1984
dc.identifier.citation[No source information available]
dc.identifier.urihttp://hdl.handle.net/10019.1/14620
dc.description.abstractPrior to treatment using a single source remote afterloading system the source-position times must be determined. Initially the ideal but theoretical source-position times are calculated using a system of linear equations. In most cases however, one or more of the solutions are negative. Assuming that the best physical answer may be obtained if these negative values are held at zero, the matrices are reduced using linear regression techniques. The reduced set of equations is then used to solve for the new times. This procedure is repeated until no further negative solutions are obtained. Using these final values, dose distributions are plotted, and are found to correspond to within 5% of those initially requested.
dc.subjectBIOMEDICAL ENGINEERING - Computer Applications
dc.subjectNUCLEAR MEDICINE - Computer Applications
dc.subjectDOSE DISTRIBUTION
dc.subjectINTRACAVITARY RADIOTHERAPY
dc.subjectISODOSE CURVE
dc.subjectSOURCE-POSITION TIMES
dc.subjectDOSIMETRY
dc.titleDETERMINATION OF SOURCE-POSITION TIMES IN INTRACAVITARY RADIOTHERAPY.
dc.typeConference Paper
dc.description.versionConference Paper


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