Table 2 Summary of dose volume histogram analysis for GTV, brain stem, optic chiasm and ipsi-lateral optic nerve for CSM patients
GK_1 | GK_2 | TB_1 | TB_2 | p | |
|---|---|---|---|---|---|
PTV vol [cm3]: 7.28 ± 4.2 Range: [3.3; 13.7] | |||||
Mean [Gy] | 17.4 ± 0.9 | 17.4 ± 0.9 | 13.6 ± 0.2 | 14.2 ± 0.5 | a, b, c, d |
D2% [Gy] | 22.9 ± 1.4 | 23.2 ± 1.3 | 14.4 ± 0.4 | 15.8 ± 0.8 | a, b, c, d |
D98% [Gy] | 12.25 ± 0.0 | 12.25 ± 0.0 | 12.25 ± 0.0 | 12.25 ± 0.0 | - |
St. dev [Gy] | 2.8 ± 0.2 | 2.8 ± 0.2 | 0.5 ± 0.1 | 0.9 ± 0.3 | a, b, c, d |
Homogeneity [%] | 52.3 ± 2.4 | 52.7 ± 1.8 | 12.4 ± 0.6 | 21.1 ± 0.5 | a, b, c, d |
PCI | 0.86 ± 0.05 | 0.81 ± 0.06 | 0.86 ± 0.06 | 0.88 ± 0.05 | c, d |
PGI | 2.7 ± 0.1 | 2.6 ± 0.1 | 3.9 ± 0.7 | 3.8 ± 0.5 | a, b, c, d |
DGM [cm] | 0.5 ± 0.1 | 0.5 ± 0.1 | 0.7 ± 0.1 | 0.6 ± 0.1 | a, b, c, d |
Brain stem vol [cm 3 ] = 19.9 ± 4.3 Range: [15.36; 26.1] | |||||
D1cm3 [Gy] | 5.4 ± 2.8 | 5.5 ± 2.6 | 5.8 ± 2.0 | 5.2 ± 2.8 | n.s. |
V8Gy [%] | 2.3 ± 2.7 | 2.3 ± 2.6 | 1.8 ± 1.7 | 1.8 ± 1.6 | n.s. |
V10Gy [%] | 0.7 ± 0.8 | 0.7 ± 0.7 | 0.5 ± 0.6 | 0.4 ± 0.4 | n.s. |
V12Gy [%] | 0.1 ± 0.1 | 0.1 ± 0.1 | 0.1 ± 0.1 | 0.0 ± 0.1 | n.s. |
Optic chiasm vol [cm 3 ] = 0.5 ± 0.3 Range: [0.3; 0.9] | |||||
D0.1cm3 [Gy] | 6.8 ± 3.4 | 5.9 ± 3.1 | 5.1 ± 2.9 | 4.5 ± 2.1 | a, b, d |
Ipsilateral optic nerve vol [cm 3 ] = 0.5 ± 0.1 Range: [0.4;0.5] | |||||
D0.1cm3 [Gy] | 4.2 ± 2.1 | 4.2 ± 2.1 | 2.9 ± 1.6 | 2.1 ± 1.5 | a, b, c, d |