Application of the quality index methodology for dosimetric verification of build-up effect beyond air-tissue interface in treatment planning system algorithms.
We have designed a simple benchmark test for the user of a treatment planning system to check the calculation algorithm's ability to model the build up effect beyond an air/tissue interface. The expected result is expressed as an inhomogeneity correction factor CF derived from measurements and from Monte Carlo calculations for a full range of photon beam qualities. The linear regression lines obtained from plotting CF as a function of beam quality index form the basis for a quantitative check of the algorithm performance.
Caneva
Sandra
S
Medical Physics Department, Institut Curie, Paris, France.
Tsiakalos
Miltiadis F
MF
Stathakis
Sotirios
S
Zefkili
Sofia
S
Mazal
Alejandro
A
Rosenwald
Jean-Claude
JC
D000388:Air; D000465:Algorithms; D019985:Benchmarking; D006801:Humans; D019047:Phantoms, Imaging; D011879:Radiotherapy Dosage; D011880:Radiotherapy Planning, Computer-Assisted / Q000379:methods*