Table VIII.

Asocation between irradiated volume of the right and left kidney and absorbed dose for three-dimensional conformal radiotherapy and IMRT.

Technique	10 Gy	15 Gy	20 Gy	30 Gy
Right kidney
2-field	33.8 (4–71)	28.2 (3–65)	24.0 (2–58)	18.5 (0–49)
3-field	41.4 (4–90)	30.5 (2–71)	25.5 (1–69)	18.6 (0–58)
4-field	36.1 (2–73)	26.3 (1–53)	21.0 (0–42)	11.8 (0–31)
IMRT	27.5 (2–67)	18.5 (1–53)	11.9 (0–27)	4.6 (0–17)
Left kidney
2-field	46.7 (7–90)	43.3 (2–79)	40.8 (1–75)	36.5 (0–61)
3-field	56.7 (2–99)	51.5 (1–100)	47.6 (0–100)	40.4 (0–100)
4-field	62.0 (15–100)	54.7 (10–100)	49.4 (1–100)	31.6 (0–91)
IMRT	47.4 (3–100)	36.4 (2–98)	26.9 (0.5–85)	14.5 (0–41)

Data are presented as median (range) % values. IMRT, intensity-modulated radiation therapy.