Table 2.
Comparison of organs at risks dose for single fixed‐jaw intensity modulated radiotherapy (sF‐IMRT), F‐IMRT, and tangential partial volumetric modulated arc therapy (tP‐VMAT).
sF‐IMRT | F‐IMRT | tP‐VMAT | P‐values | |||
---|---|---|---|---|---|---|
sF‐IMRT vs tP‐VMAT | F‐IMRT vs tP‐VMAT | sF‐IMRT vs F‐IMRT | ||||
Left lung | ||||||
Dmean (cGy) | 748.50 (122.54) | 676.70 (112.26) | 785.52 (37.94) | 0.358 | 0.006 | 0.110 |
V30Gy (%) | 9.85 (2.86) | 8.76 (2.06) | 8.18 (1.05) | 0.094 | 0.415 | 0.196 |
V20Gy (%) | 14.25 (2.81) | 12.35 (2.47) | 14.23 (1.50) | 0.978 | 0.043 | 0.077 |
V5Gy (%) | 29.54 (4.69) | 25.90 (4.58) | 34.23 (1.54) | 0.008 | 0.000 | 0.050 |
Right lung | ||||||
Dmean (cGy) | 829.13 (115.31) | 773.82 (93.73) | 876.19 (75.43) | 0.273 | 0.011 | 0.095 |
V30Gy (%) | 11.85 (2.92) | 9.84(2.29) | 8.99 (1.62) | 0.012 | 0.327 | 0.068 |
V20Gy (%) | 16.80 (2.53) | 14.89(2.23) | 16.02 (2.13) | 0.446 | 0.236 | 0.045 |
V5Gy (%) | 31.63 (5.66) | 30.41(3.92) | 39.53 (4.34) | 0.002 | 0.000 | 0.398 |
Heart | ||||||
Dmean (cGy) | 505.68 (164.10) | 479.35 (125.54) | 580.59 (87.12) | 0.201 | 0.040 | 0.634 |
V30Gy (%) | 4.59 (2.47) | 4.38 (2.20) | 2.02 (1.10) | 0.007 | 0.005 | 0.767 |
Coronary | ||||||
Dmean (cGy) | 2024.85 (576.93) | 1980.44 (519.10) | 1883.26 (335.65) | 0.492 | 0.608 | 0.792 |
V40Gy (%) | 15.12 (8.11) | 12.30 (7.82) | 0.87 (1.49) | 0.000 | 0.000 | 0.393 |
Liver | ||||||
Dmean (cGy) | 357.85 (167.79) | 307.88 (123.71) | 439.71 (125.57) | 0.211 | 0.022 | 0.391 |
V30Gy (%) | 3.80 (2.70) | 2.57 (1.67) | 1.88 (1.25) | 0.109 | 0.307 | 0.200 |