Impact of postimplant edema on V100 and D90 in prostate brachytherapy: can implant quality be predicted on day 0?

Purpose: To determine the effect of edema on the dosimetric parameters V100 (percentage of prostate volume that received a dose equal to or greater than the prescribed dose) and D90 (minimal dose delivered to 90% of prostate volume) in 125I prostate brachytherapy and to determine whether the edema can be used to predict implant quality on the day of the implant (Day 0).