Table 1 Summary of dose volume histogram analysis for GTV, brain stem and ipsilateral cochlea for VS patients
GK_1 | GK_2 | TB_1 | TB_2 | p | |
|---|---|---|---|---|---|
PTV vol [cm3]: 4.22 ± 2.85 Range: [1.20; 8.50] | |||||
Mean [Gy] | 17.1 ± 0.9 | 17.1 ± 0.8 | 12.9 ± 0.1 | 16.0 ± 0.6 | a, b, c, d |
D2% [Gy] | 22.7 ± 1.2 | 23.0 ± 0.8 | 13.4 ± 0.2 | 18.8 ± 1.1 | a, b, c, d |
D98% [Gy] | 12.25 ± 0.0 | 12.25 ± 0.0 | 12.25 ± 0.0 | 12.25 ± 0.0 | n.s. |
St. dev [Gy] | 2.7 ± 0.3 | 2.8 ± 0.2 | 0.3 ± 0.1 | 1.7 ± 0.3 | a, b, c, d |
Homogeneity [%] | 51.7 ± 3.5 | 51.8 ± 1.2 | 6.4 ± 1.5 | 35.0 ± 4.9 | a, b, c, d |
PCI | 0.81 ± 0.03 | 0.78 ± 0.04 | 0.83 ± 0.07 | 0.84 ± 0.04 | c, d |
PGI | 2.7 ± 0.2 | 2.8 ± 0.2 | 5.1 ± 0.7 | 3.8 ± 0.6 | a, b, c, d |
DGM [cm] | 0.4 ± 0.1 | 0.4 ± 0.1 | 0.6 ± 0.1 | 0.5 ± 0.1 | a, b, c, d |
Brain stem vol [cm 3 ] = 21.50 ± 8.37 Range: [8.69; 32.70] | |||||
D1cm3 [Gy] | 5.1 ± 2.0 | 5.4 ± 2.2 | 5.7 ± 2.1 | 4.8 ± 1.6 | n.s. |
V8Gy [%] | 1.9 ± 1.7 | 2.3 ± 1.8 | 2.5 ± 1.9 | 1.1 ± 1.0 | a, b, d |
V10Gy [%] | 0.6 ± 0.5 | 0.8 ± 0.6 | 0.8 ± 0.7 | 0.2 ± 0.2 | a, b, d |
V12Gy [%] | 0.1 ± 0.1 | 0.2 ± 0.2 | 0.03 ± 0.04 | 0.01 ± 0.01 | a |
Ipsilateral cochlea vol [cm 3 ] = 0.10 ± 0.01 Range: [0.02;0.13] | |||||
Mean [Gy] | 6.6 ± 2.9 | 3.3 ± 0.8 | 5.5 ± 2.2 | 4.1 ± 0.9 | a, b, c |
D0.1cm3 [Gy] | 4.0 ± 1.8 | 1.7 ± 1.0 | 3.1 ± 1.2 | 1.8 ± 0.5 | a, b, c |
D30% [Gy] | 7.3 ± 3.2 | 3.6 ± 0.8 | 6.2 ± 2.4 | 4.7 ± 1.1 | a, b, c, d |