Fig. 7

The map of every structure’s paired t test under varied gamma analysis standard. When the gamma analysis standard setting was 1.0 mm, 1.0% and the dose distributions of DCGS = 3.0, 4.0, 5.0 mm were compared with DCGS = 2.0 mm respectively and the results were grouped as Aa, Ba, Ca. When the gamma analysis standard setting was 1.0 mm, 2.0% and the dose distributions of DCGS = 3.0, 4.0, 5.0 mm were compared with DCGS = 2.0 mm respectively and the results were grouped as Ab, Bb, Cb. When the gamma analysis standard setting was 1.0 mm, 3.0% and the dose distributions of DCGS = 3.0, 4.0, 5.0 mm were compared with DCGS = 2.0 mm respectively and the results were grouped as Ac, Bc, Cc