Beam quality correction factors for ionization chambers in a 0.35 T magnetic resonance (MR)-linac – A Monte Carlo study

Magnetic resonance-guided radiation therapy (MRgRT) combines the excellent soft-tissue contrast provided by MRI with treatment capabilities using a radiation beam [1]. With the increased prevalence of MR-linear accelerators (MR-linacs) in clinical radiotherapy, accurate and precise reference dosimetry methods are needed to achieve uncertainties comparable to conventional linacs [2]. Air-filled ionization chambers (ICs) are typically utilized as reference dosimeters when measuring output in the form of absorbed dose to water in a radiation beam.
Source: Physica Medica: European Journal of Medical Physics - Category: General Medicine Authors: Source Type: research