Determination of correction factors in small MLC-defined fields for the Razor and microSilicon diode detectors and evaluation of the suitability of the IAEA TRS-483 protocol for multiple detectors.

ABSTRACT: Small field output factors for Multileaf collimator (MLC)-defined field sizes between 0.5 × 0.5 cm² and 3 × 3 cm² were measured with six different detectors for a Varian TrueBeam in 6-MV, 6-FFF, 10-MV, and 10-FFF photon beams. Correction factors kQclin,Qreffclin,fref$k_{{Q_{{\rm{clin}}}},{Q_{{\rm{ref}}}}}^{{f_{{\rm{clin}}}},{f_{{\rm{ref}}}}}$ from the IAEA publication TRS-483 were used to correct the measured output factors. The corrected output factors from the six detectors were used to calculate correction factors for the PTW microSilicon T60023 (PTW, Freiburg, Germany) and IBA Razor (IBA Dosimetry, Schwarzenbruck, Germany) detectors. The uncertainty of the output and correction factors in this study was calculated and the calculations presented in detail. The appl

SUBMITTER: McGrath AN 

PROVIDER: S-EPMC9278669 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature