Table 2.

Selected dose-volume statistics for other organ-at-risk in IMPT in the static and 1 error scenarios, as well as the values in IMRT plan. IMPT dose-volume values were either statistically significantly smaller than IMRT value, or not significantly different from IMRT values, from paired Wilcoxon signed-rank tests.

		IMRT	IMPT Static	IMPT Worst	IMPT Average +3%	IMPT Average −3%	IMPT Average 0%
Bowel V40Gy (%)	Median (Min- Max)	20.5 (12.2–29.7)	18.4 (10.1–27.1)	22.5 (12.8–29.9)	16.2 (8.9–23.8)	20.1 (10.6–28.5)	18.0 (9.8–26.2)
	p-value	Reference	0.01	0.77	<.01	0.01	<.01
Bowel DMean (Gy)	Median (Min- Max)	23.9 (20.3–30.8)	14.8 (10.4–20.4)	16.9 (11.9–21.9)	14.2 (10.1–19.5)	15.7 (10.7–21.5)	14.9 (10.4–20.5)
	p-value	Reference	<.01	<.01	<.01	<.01	<.01
Rectum V30Gy (%)	Median (Min- Max)	80.6 (49.4–99.3)	62.9 (49.3–94.1)	77.7 (66.7–99.0)	62.1 (49.0–94.7)	69.5 (54.7–96.5)	65.3 (51.3–95.1)
	p-value	Reference	0.06	0.43	0.05	0.32	0.13
Rectum DMean (Gy)	Median (Min- Max)	40.9 (29.8–47.1)	34.1 (29.1–45.1)	40.5 (33.8–47.9)	32.5 (28.8–43.9)	36.3 (29.6–46.3)	34.3 (29.2–45.1)
	p-value	Reference	<.01	0.38	<.01	0.05	0.01
Bladder V45Gy (%)	Median (Min- Max)	44.0 (22.0–79.2)	31.9 (22.6–55.7)	52.5 (29.9–73.1)	22.2 (14.0–48.4)	43.4 (27.4–63.7)	32.6 (20.6–56.0)
	p-value	Reference	0.04	0.16	<.01	0.85	0.04
Bladder DMean (Gy)	Median (Min- Max)	42.5 (32.2–46.6)	37.5 (29.2–39.8)	40.6 (32.3–45.7)	36.2 (27.6–38.7)	39.0 (31.3–41.4)	37.5 (29.3–39.8)
	p-value	Reference	<.01	0.02	<.01	<.01	<.01
Rt Femoral Head V30Gy(%)	Median (Min- Max)	12.3 (10.4–13)	2.8 (0–23.9)	10.8 (2.6–37.9)	2.3 (0–22.7)	2.8 (0–25.1)	2.7 (0–23.9)
	p-value	Reference	0.06	0.43	0.05	0.32	0.13
Lt Femoral Head V30Gy(%)	Median (Min- Max)	12.7 (7.6–13.6)	5.3 (0–25.0)	16.0 (2.5–41.0)	4.7 (0–23.7)	5.8 (0–25.8)	5.1 (0–24.4)
	p-value	Reference	0.13	0.19	0.05	0.13	0.11