Rectal dose constraints for salvage iodine-125 prostate brachytherapy

FS reduces rectal dose compared with TS. D0.1cc, D1cc, D2cc, and V100 restrictions were 160 Gy, 120 Gy, 100 Gy, and 0.35 cc. Taking correlation into account, the D2cc <100 Gy might be sufficient for clinical practice. Larger series and multivariable models are necessary to further assess the found restrictions.