VMAT | IMRT | CyberKnife | p | |
---|---|---|---|---|
CI | 1.17 ± 0.04 | 1.25 ± 0.07 | 1.07 ± 0.03 | p |
HI | 1.07 ± 0.01 | 1.04 ± 0.01 | 1.25 ± 0.03 | p |
Structure | Criteria |
---|---|
PTV: IMRT and VMAT | DMax:107% of the prescribed dose |
DMin: 95% of the prescribed dose | |
Prescribed isodose: 78% |
|
PTV: Cyber Knife | Total dose of prescribed isodose covering at least 95% of PTV volume |
V18 Gy < 50% Vol | |
V29 Gy < 20% Vol | |
Rectum | V32.6 Gy < 10% Vol |
V36.25 Gy < 5% Vol | |
V36 Gy < 1 mm3 | |
V18 Gy < 55% Vol | |
V29 Gy < 25% Vol | |
Bladder | V32.6 Gy < 15% Vol |
V36.25 Gy < 10% Vol | |
V37 Gy < 10 mm3 | |
Femoral heads: left and right | V25 Gy < 45% Vol |
VMAT | IMRT | CyberKnife | p | |
---|---|---|---|---|
D mean PTV |
36.25 | 36.25 | 39.59±1.11 | - |
D min PTV |
34.6±0.41 | 34.67±0.52 | 31.48±0.99 | p < 0.001 |
D max PTV |
38.76±0.47 | 37.57±0.4 | 45.89±0.94 | p < 0.001 |
Target coverage D98% |
97.36±1.02 | 99.25±0.75 | 96.08±0.76 | p < 0.001 |
VMAT | IMRT | CyberKnife | p | |
---|---|---|---|---|
V18 Gy [%] | 15.33 ± 2.97 | 15.17 ± 2.79 | 22.58 ± 6.6 | p |
V29 Gy [%] | 7.13 ± 2 | 7.25 ± 1.89 | 7.18 ± 2.82 | p p values > 0.05 were considered non-significant |
V32.6 Gy [%] | 4.75 ± 1.51 | 4.82 ± 1.58 | 3.23 ± 1.66 | p |
V36.25 Gy [%] | 0.54 ± 0.29 | 0.32 ± 0.25 | 0.24 ± 0.25 | p |
V36 Gy in mm3 | 591.59 ± 226.53 | 422.62 ± 236.64 | 219.78 ± 235.02 | p |
V18 Gy [%] | 11.98 ± 5.33 | 14.93 ± 5.56 | 19.25 ± 8.62 | p |
V29 Gy [%] | 5.87 ± 2.32 | 8 ± 2.73 | 7.35 ± 3.27 | p |
V32.6 Gy [%] | 4.38 ± 1.72 | 5.7 ± 2.08 | 4.71 ± 2.14 | p |
V36.25 Gy [%] | 2 ± 0.93 | 1.22 ± 0.81 | 2.16 ± 1.09 | p |
V37 Gy in mm3 | 1090.75 ± 610.81 | 4.5 ± 15.7 | 3256 ± 1518.84 | p |
Left femoral head V25 Gy | 0 | 0.12 ± 0.25 | 0 | |
Right femoral head V25 Gy | 0 | 0.12 ± 0.3 | 0 |