Monitor unit calculation for tangential breast treatments: Verification in an anthropomorphic phantom
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چکیده
منابع مشابه
Monitor unit calculation for tangential breast treatments: Verification in an anthropomorphic phantom
This paper presents an anthropomorphic phantom study of dose delivered to a specific point during tangential breast irradiation to verify monitor unit calculations. Measurements were made using a 0.6 cc Farmer type cylindrical ionization chamber in the phantom and compared to calculations made on a three-dimensional radiotherapy treatment planning system using single digitized contour through t...
متن کاملVerifying monitor unit calculations for tangential breast fields
An essential component of quality assurance in radiation therapy is verifying the accuracy of monitor unit calculations. Differences between between sophisticated algorithms using 2.5D or 3D calculations and simpler Monitor unit check algorithms assuming a flat water phantom must be expected. For many anatomical sites such differences are small and of little or no consequence in the context of ...
متن کاملVerification of Monitor unit calculations for eclipse Treatment Planning System by in- house developed spreadsheet
Introduction: Computerized treatment planning is a rapidly evolving modality that depends on hardware and software efficiency. Despite ICRU recommendations suggesting 5% deviation in dose delivery the overall uncertainty shall be less than 3.5% as suggested by B.J. Minjnheer. J. In house spreadsheets are developed by the medical physicists to cross-verify the dose calculated by the Treatment Pl...
متن کاملVerifying monitor unit calculations for tangential whole‐breast fields in three‐dimensional planning
An essential component of quality assurance in radiation therapy is verifying the accuracy of monitor unit calculations. For tangential breast fields, monitor unit differences between primary calculations and second checks are usually larger than considered acceptable at other anatomical sites. A simple model to reconcile the differences between sophisticated and simple algorithms is presented,...
متن کاملVerification of the accuracy of 3D calculations of breast dose during tangential irradiation: measurements in a breast phantom
This report specifically describes the use of a unique anthropomorphic breast phantom to validate the accuracy of three-dimensional dose calculations performed by a commercial treatment-planning system for intact-breast tangential irradiation. The accuracy of monitor-unit calculations has been corroborated using ionization chamber measurements made in this phantom. Measured doses have been comp...
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ژورنال
عنوان ژورنال: Journal of Applied Clinical Medical Physics
سال: 2002
ISSN: 1526-9914,1526-9914
DOI: 10.1120/jacmp.v3i3.2568