Residual motion mitigation in scanned carbon ion beam therapy of liver tumors using enlarged pencil beam overlap

摘要

Background and purpose: Interplay effects may limit the applicability of scanned ion beam therapy for moving tumors even if the motion amplitude is reduced by techniques such as gating or abdominal compression (AC). We investigate the potential of enhanced pencil beam overlap to mitigate residual motion interplay effects in scanned ion beam therapy.