Table 1. Volume and dose of radiation to target tissue.
Parameter | HR-CTV | IR-CTV |
Volume (cc) | 40 (16–89) | 100 (46–113) |
V100 (%, ISBT alone) | 96.7 (81.9–99.2) | |
D90 (Gyα/β10, ISBT alone) | 45 (33–54) | 30 (20–37) |
D100 (Gyα/β10, ISBT alone) | 26 (20–35) | 16 (7–22) |
D90 (Gyα/β10, ISBT+EBRT) | 94 (83–104) | 77 (70–87) |
D100 (Gyα/β10, ISBT+EBRT) | 75 (66–84) | 65 (57–72) |
HR-CTV, high-risk clinical target volume; IR-CTV, intermediate-risk clinical target volume; ISBT, interstitial brachytherapy; EBRT, external beam radiotherapy; D100, the minimal target dose; D90, dose received by at least 90% of the volume; V100, the volume treated with the prescription dose. All values are presented as median (range).