Age at time of treatment (years) Median 56 Range 12-85 Patients (n = 16) Male 7 (44%) Female 9 (56%) Lesions (n = 25) Peripheral 19 (76%) Central 6 (24%) Histology Leiomyosarcoma 7 Synovial cell 5 Osteosarcoma 4 Liposarcoma 2 NOS 2 Spindle cell 1 Chondrosarcoma 1 Liposarcoma 1 Hemangiopericytoma 1 Embryonal 1 Dose fractionation and BED * 54 Gy, 3 fractions (BED = 151.2 Gy) 13 (52%) 50 Gy, 4 fractions (BED = 112.5 Gy) 9 (36%) 36 Gy, 3 fractions (BED = 79.2 Gy) 2 (8%) 42 Gy, 3 fractions (BED = 100.8 Gy) 1 (4%) * Biological
equivalent dose is calculated per (1), assuming [alpha]/ [beta] ratio of 10 for tumor (n = number of fractions, d = total dose).