The effect of MLC leaf width in single-isocenter multi-target radiosurgery with volumetric modulated arc therapy.

Abstract

SIMT radiosurgery delivered via VMAT using 5 mm wide MLCs can achieve similar CI compared to that using 2.5 mm leaf width MLCs but with moderately increased isodose spill, which can be only partially mitigated by increasing the number of VMAT arcs.