Table 2.

Medians [range] of prostate, PTV and anorectal volumes (cm³) show no significant difference between patients with and without spacer.

	Without spacer	With spacer
Prostate	52.4 [24.1–134.4]	50.5 [25.3–130.3]	p = 0.269
PTV	136.2 [71.7–267.1]	134.3 [74.8–266.1]	p = 0.603
Rectum	75.5 [34.1–374.5]	51.3 [30.9–213.2]	p = 0.086
Anorectum	88.9 [45.7–378.8]	61.3 [46.6–216.7]	p = 0.066

Abbreviations: PTV = planning target volume.