| TomoHelical | TomoDirect | ||||
---|---|---|---|---|---|---|
 |  |  | Angles A ( p-value ) | Angles B ( p-value ) | ||
 |  | (Mean ± standard deviation) | ||||
Patient number | 19 | |||||
PTV* (cc) | 95.4 ± 22 | |||||
Modulation factor | 2 | |||||
Pitch | 0.215 | |||||
Field width | 2.5 | |||||
Conformity index | 1.95 ± 0.27 | 2.08 ± 0.37 | (0.22) | 2.01 ± 0.5 | ( 0.61) | |
Uniformity index | 1.06 ± 0.04 | 1.07 ± 0.05 | (0.26) | 1.06 ± 0.04 | (0.4) | |
D95% (%) | 96 ± 3 | 96 ± 3 | (0.99) | 96 ± 2 | (0.64) | |
Time (sec) | 202 ± 15 | 221 ± 19 | ( 0.001 ) | 215 ± 23 | (0.04) | |
Rectum | V10 Gy (%) | 99 ± 2 | 99 ± 2 | (0.51) | 98 ± 3 | (0.32) |
 | V20 Gy (%) | 78 ± 15 | 87 ± 11 | (0.035) | 81 ± 12 | (0.49) |
 | V30 Gy (%) | 50 ± 4 | 65 ± 22 | (0.005) | 60 ± 19 | (0.03) |
 | V40 Gy (%) | 30 ± 4 | 46 ± 24 | (0.008) | 42 ± 21 | (0.01) |
 | V50 Gy (%) | 21 ± 3 | 33 ± 18 | (0.008) | 34 ± 19 | (0.01) |
 | V60 Gy (%) | 15 ± 2 | 22 ± 12 | (0.006) | 25 ± 16 | (0.01) |
 | V70 Gy (%) | 7 ± 2 | 10 ± 5 | (0.01) | 14 ± 12 | (0.02) |
Bladder | V10 Gy (%) | 79 ± 18 | 76 ± 17 | (0.62) | 80 ± 17 | (0.81) |
 | V20 Gy (%) | 66 ± 18 | 61 ± 16 | (0.39) | 63 ± 19 | (0.76) |
 | V30 Gy (%) | 51 ± 14 | 50 ± 13 | (0.89) | 51 ± 14 | (0.81) |
 | V40 Gy (%) | 35 ± 9 | 37 ± 10 | (0.5) | 38 ± 9 | (0.44) |
 | V50 Gy (%) | 24 ± 6 | 27 ± 8 | (0.23) | 28 ± 7 | (0.07) |
 | V60 Gy (%) | 16 ± 4 | 19 ± 5 | (0.1) | 20 ± 5 | (0.01) |
 | V70 Gy (%) | 9 ± 2 | 10 ± 3 | (0.28) | 12 ± 3 | (0.004) |