Dosimetric Characteristics of Clinical Photon Beams

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Disclosures �Research �Research development grants from Philips Medical Systems, Elekta Oncology Systems Systems, and Sun Nuclear Associates Associates. �NIH research award. �B �Bankhead kh d CColey l research h award. d
Learning g Objectives j �Understanding dosimetric properties of clinical photon beams. �Understanding gpphysical y pparameters that affect dosimetric properties of clinical photon p beams. �Understand the need for accurate characterization of clinical photon beams in a treatment planning system.
Page 1: Dosimetric Characteristics of Clini
Page 5 and 6: Sources of radiation that determine
Page 7 and 8: Characterizing Dosimetric Propertie
Page 9 and 10: Normalized Depth Dose Data Energy D
Page 11 and 12: Normalized Depth Dose Data Wedge/Op
Page 13 and 14: Normalized Depth Dose Data Field si
Page 15 and 16: Monte Carlo Calculated Average Ener
Page 17 and 18: Equivalent square d Sterling g Form
Page 19 and 20: Measurement of Normalized Depth DDo
Page 21 and 22: S c c S p �� s � Beam Output
Page 23 and 24: Monte Carlo Calculations of In- Sim
Page 25 and 26: Energy spectrum of head scattered p
Page 27 and 28: Flattening Filter Beam Modifier (in
Page 29 and 30: Cross Beam Characteristics � Affe
Page 31 and 32: Cross Beam Profile 6 MV Photon Beam
Page 33 and 34: Effect of a Dipole p Magnet g on Ex
Page 35 and 36: Isodose Distribution 30 cm X 30 cm
Page 37 and 38: Isodose Distributions (20 X 20 Cm2
Page 39 and 40: Detector Size Effect on TPS Commiss
Page 41 and 42: IMRT QA results: DTA 2%/2 mm CC13 C
Page 43 and 44: Measurement of Wedge Factors � Th
Page 45 and 46: Approaches to Dose Computation Algo
Page 47 and 48: Accuracy Goal in Dose Calculations
Page 49 and 50: Characterizing Clinical Photon Cave
Page 51 and 52: Benchmark Dataset (D (Developed l d
Page 53:
Summary �It is quite evident that
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Dosimetric Characteristics of Clinical Photon Beams

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