Table 2.
Summary of the cumulative dose–volume parameters.
| V5Gy | V10Gy | V15Gy | V20Gy | V25Gy | V30Gy | V40Gy | V50Gy | |
|---|---|---|---|---|---|---|---|---|
| Volume (cm3) | ||||||||
| Median | 553 | 339 | 216 | 151 | 108 | 82 | 49 | 22 |
| IQR | 456–682 | 272–447 | 157–316 | 107–219 | 73–156 | 54–110 | 32–64 | 9–35 |
| Volume (%) | ||||||||
| Median | 49.8 | 28.8 | 19.6 | 13.8 | 9.5 | 7.2 | 4.1 | 1.8 |
| IQR | 39.1–61.5 | 22.6–39.2 | 14.1–27.8 | 9.7–19.1 | 6.8–13.8 | 4.7–10.2 | 2.5–5.7 | 0.6–3.1 |
| V 60Gy | V 75Gy | V 90Gy | V 105Gy | V 120Gy | D max (Gy) | rV 15Gy (cm 3 ) | MLD (Gy) | |
| Volume (cm3) | ||||||||
| Median | 4 | 0 | 0 | 0 | 0 | 66.4 | 871 | 9.3 |
| IQR | 0–15 | 0–1 | 0–0 | 0–0 | 0–0 | 56.9–79.5 | 743–1051 | 7.6–11.6 |
| Volume (%) | ||||||||
| Median | 0.3 | 0 | 0 | 0 | 0 | <700 cm 3 | >13 Gy | |
| IQR | 0–1.3 | 0–0.1 | 0–0 | 0–0 | 0–0 | n = 13 (15.3%) | n = 10 (11.8%) | |
Abbreviations: IQR, interquartile range; rV15Gy, reverse V15Gy (normal liver volume irradiated below 15 Gy); Dmax, maximal dose; MLD, mean liver dose.
Volume of liver (cm3 or %) irradiated at X Gy (VXGy).