The first prototype of spot-scanning proton arc treatment delivery

Pencil beam scanning (PBS) technique [1,2] has become a popular treatment modality in proton therapy [3], which offers superior dosimetric properties compared to photon therapy and passive scatter proton beam therapy [4 –7]. In PBS, the narrow beams (spots) deliver the therapeutic radiation dose from several fixed beam directions via spots in an optimized fashion. However, the dosimetric quality of the PBS plan could be limited [8] due to the large lateral penumbra [9], uncertainties from patient’s daily setup and proton range [10–16], and limited angles for delivery given the treatment delivery efficiency [17–19].

Source: Radiotherapy and Oncology - May 13, 2019 Category: Radiology Authors: Xiaoqiang Li, Gang Liu, Guillaume Janssens, Olivier De Wilde, Vincent Bossier, Xavier Lerot, Antoine Pouppez, Di Yan, Craig Stevens, Peyman Kabolizadeh, Xuanfeng Ding Tags: Original Article Source Type: research