eFLASH for Skin Lesions of Malignant Melanomas

A nominal electron energy of 9 MeV will be used for both Flash-RT and Conv-RT, which guarantees ≥ 90% dose coverage up to a depth of 2.8 cm. Shallower lesions will be treated with the same electron energy and with a bolus. In order to treat these patients, field sizes between 2x2cm2 and 10x10cm2 will be used, which can be delivered with sufficient flatness (\<5%) and symmetry (\<2%) by the FlashTrueBeam v2.7.5.