SBRT of kidney: our initial experience

To report our Initial Experience on Volumetric-Modulated Arc Therapy (VMAT) of SBRT Kidney. Stereotactic body radiation therapy (SBRT) represents a novel treatment approach in the setting of renal cell carcinoma (RCC). Three patients of RCC already treated with VMAT, True Beam (Varian) were taken for this study. Three VMAT plans for gantry rotation angles of 360° and 180° viz 2 full-arc with flattening filter less 10 MV photon (2FA₁0FFF), 2 half-arc with flattening filter less 10 MV photon (2HA₁0FFF), 2 full-arc with flattening filter less 6 MV photon (2FA₆FFF) were created for each patient with the Eclipse treatment planning system (version 13.5). Dose prescription was 45Gy/3 fractions. Full-arc and half-arc VMAT plans were compared with regard homogeneity index (HI), coverage index (CI), Conformation Number (CN), dose to OARs (Spine, Duodenum, Stomach), total monitor units (MU), effective dose rates, delivery times, and gamma passing rate for delivery QA for each plan. Delivery QA for each plan is carried out using Arc check dosimetry (Sun NuclearTM)