Technical note: Point‐by‐point ion‐recombination correction for accurate dose profile measurement in high dose‐per‐pulse irradiation field
Hideki Kojima,
Masayori Ishikawa,
Makoto Takigami
Abstract:BackgroundAlthough flattening filter free (FFF) beams are commonly used in clinical treatment, the accuracy of dose measurements in FFF beams has been questioned. Higher dose per pulse (DPP) such as FFF beams from a linear accelerator may cause problems in dose profile measurements using an ionization chamber due to the change of the charge collection efficiency. Ionization chambers are commonly used for percent depth dose (PDD) measurements. Changes of DPP due to chamber movement during PDD measurement can va… Show more
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