Table 2.
Dosimetric parameters based on radiation dose levels.
| Level 1 | Level 2 | Level 3 | Total | |||||
|---|---|---|---|---|---|---|---|---|
| (n = 4) | (n = 6) | (n = 7) | (n = 17) | |||||
| Parameters | Median | (Range) | Median | (Range) | Median | (Range) | Median | (Range) |
| PTV1 (cc) | 398 | (277–467) | 490 | (69–2086) | 355 | (260–909) | 398 | (69–2086) |
| PTV2 (cc) | 819 | (561–2066) | 717 | (209–2814) | 758 | (525–1634) | 784 | (209–2814) |
| Uninvolved liver volume (cc) | 1018 | (876–1643) | 1138 | (814–1393) | 1176 | (855–1511) | 1122 | (814–1643) |
| Mean dose of whole liver (Gy) | 30.4 | (20.5–42.1) | 28.1 | (18.8–38.2) | 30.1 | (17.7–39.6) | 30.4 | (18.8–42.1) |
| Mean dose of uninvolved liver (Gy) | 21.3 | (15.35–27.4) | 21.6 | (19.2–25.7) | 18.2 | (11.5–24.4) | 20.4 | (11.5–27.4) |
| Maximum dose of stomach (Gy) | 42.6 | (20.3–55.4) | 27.9 | (15.1–54.0) | 51.2 | (26.8–56.3) | 40.9 | (15.1–56.3) |
| Maximum dose of duodenum (Gy) | 40.0 | (21.4–52.2) | 37.8 | (2.1–54.6) | 48.5 | (15.1–54.1) | 40 | (2.1–54.6) |
| Maximum dose of spinal cord (Gy) | 29.8 | (26.8–35.2) | 25.7 | (18.7–37.4) | 36.8 | (24.7–44.0) | 30.5 | (18.7–44.0) |
| Mean dose of right kidney (Gy) | 5.6 | (2.5–19.4) | 6.4 | (1.1–20.4) | 2.8 | (1.3–17.5) | 6.4 | (1.1–20.4) |
| Mean dose of left kidney (Gy) | 4.6 | (0.8–16.9) | 3.2 | (0.6–6.9) | 2.4 | (0.6–7.5) | 3.2 | (0.6–16.9) |
Abbreviations: PTV, planning target volume.