Fig. 1From: Evaluation of variability in target volume delineation for newly diagnosed glioblastoma: a multi-institutional study from the Korean Radiation Oncology Group a Case 1. RO #4 only included the resection margin for GTV (green line) whereas RO #9 included both the resection margin and the resected tumor bed (red line). b Case 4. RO #2 included both the resection margin and the resected tumor bed (red line), in contrast to RO #4 (green line). Abbreviation; GTV, gross target volume; RO, radiation oncologistBack to article page