Three-dimensional conformal arc radiotherapy using a C-arm linear accelerator with a computed tomography on-rail system for prostate cancer: clinical outcomes

Table 1 Dose-volume relationships for the planning target volume, rectum, and bladder for 261 patients

Patients	IC dose	D95 (PTV)	V80R	V70R	V50R	V80B	V70B	V50B
	(Gy)	(Gy)	(%)	(%)	(%)	(%)	(%)	(%)
median	82	75.9	0.4	6.7	24.5	5.5	12.2	22.2
range	78–86	70.8–80.9	0–3.2	3.0–11.2	12.1–42.2	0–18.9	2.8–30.7	7.8–50.5

PTV planning target volume, IC isocenter, D95(PTV) the dose given to 95 % of the PTV; V80R, V70R, and V50R, percent of the volume of the rectum receiving 80 Gy, 70 Gy, and 50 Gy, respectively; V80B, V70B, and V50B, percent of the volume of the bladder receiving 80 Gy, 70 Gy, and 50 Gy, respectively

ISSN: 1748-717X