2017_SBRT_Course Book

Volumetric Modulated Arc Therapy

▪ Interplay between leaves and tumor motion is not significant for single- fraction treatments when RapidArc is delivered with two different arcs ▪ Under phantom conditions, single-arc and single-fraction 2400 MU/min FFF RapidArc lung stereotactic body radiation therapy is susceptible to interplay. Two arcs and ≥2 fractions reduced the effect to a level that appeared unlikely to be clinically significant

Ong et al. Int. J. Radiation Oncology Biol. Phys., Vol. 79, No. 1, pp. 305–311, 2011 Ong et al. Int J Radiation Oncol Biol Phys, Vol. 86, No. 4, pp. 743e748, 2013