1A System of Dosimetric CalculationsTarun K. Podder, PhD, DABRDepartment of Radiation OncologyBrody School of MedicineLeo Jenkins Cancer CenterEast Carolina UniversityJanuary 27, 2011Lecture # 6 (Ch. 10)
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2Absorbed Dose CalculationsLimitations of PDD and TAR methods of calculations:•PDD depends on SSD –unsuitable for isocentric technique-TAR and SAR can be used•Measurements of TAR/ SAR for MV beams are questionable-measurement in free-space/ air-chamber build-up cap (large, material properties, etc..)