Significance of Image Guidance to Clinical Outcomes for Localized Prostate Cancer

Table 2

Comparison of doses received by organs at risk between IMRT and IG-IMRT groups.

	IG-IMRT	IMRT	𝑃
Bladder
𝑉40 (%)	57.88	58.32	0.937
𝑉50 (%)	41.17	42.28	0.796
𝑉60 (%)	27.48	30.62	0.905
𝑉70 (%)	17.09	21.01	0.782
Volume	180.46	163.33	0.598
Rectum
𝑉40 (%)	53.358	61.286	0.022
𝑉50 (%)	39.945	40.131	0.949
𝑉60 (%)	29.316	26.500	0.210
𝑉70 (%)	14.493	18.745	0.006
Volume	60.74	73.35	0.200

𝑉₄₀, 𝑉₅₀, 𝑉₆₀, and 𝑉₇₀ are the percentage of volume receiving ≥40, ≥50, ≥60, and ≥70 Gy, respectively. Data are presented as mean values.