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What are film’s advantages and drawbacks for patient-specific IMRT/SBRT/IMAT QA?

April 26, 2017advantages drawbacks Film imat imrt patient-specific QA

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What are film’s advantages and drawbacks for patient-specific IMRT/SBRT/IMAT QA?

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Film has excellent spatial resolution, has a dose response independent of incident beam angle and beam energy (EDR2 and EBT2 films), and a low startup cost. The high spatial resolution and accurate dosimetry make it an excellent choice for commissioning IMRT/IMAT systems, as the additive effects of MLC penumbra modeling can be compared to treatment planning system calculations very clearly. Film is well-suited for patient-specific verifications for the same reasons, although film calibration, processing, and scanning can add to the time required. Using self-processing EBT2 film and DoseLab Pro’s fast dynamic wedge calibration technique can minimize the measurement time, allowing busy clinics to reap the benefits of film dosimetry without the added workload.