Long‐term stability of a PTW 34070 large‐area parallel ionization chamber in clinical proton scanning beams
Masashi Yamanaka,
Yutaro Mori,
Kazuki Matsumoto
et al.
Abstract:PurposeIn the modeling of beam data for proton therapy planning systems, absolute dose measurements are performed utilizing a Bragg peak chamber (BPC), which is a parallel‐plate ionization chamber. The long‐term stability of the BPC is crucial for ensuring accurate absolute dose measurement. The study aims to assess the long‐term stability of the BPC in clinical proton pencil beam scanning delivery.MethodsThe long‐term stability evaluation focused on the BPC‐Type 34070 (PTW Freiburg, Germany), utilizing clinic… Show more
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