High-Dose-Rate Brachytherapy Boost for Prostate Cancer: Comparison of Two Different Fractionation Schemes Tania Kaprealian, M.D., Vivian Weinberg, Ph.D., Joycelyn L. Speight, M.D., Ph.D., Alexander R. Gottschalk, M.D., Ph.D., Mack Roach, M.D., Katsuto Shinohara, M.D., I.-Chow Hsu, M.D. International Journal of Radiation Oncology • Biology • Physics Volume 82, Issue 1, Pages 222-227 (January 2012) DOI: 10.1016/j.ijrobp.2010.09.021 Copyright © 2012 Terms and Conditions
Fig. 1 Biochemical no-evidence-of-disease (bNED) rate by fractionation at 5-year follow-up. Solid line = 600 cGy × 3 (group 1) and a 5-year bNED rate of 93.5%. Dashed line = 950 cGy × 2 (group 2) and 5-year bNED rate of 87.3% (p = 0.19). International Journal of Radiation Oncology • Biology • Physics 2012 82, 222-227DOI: (10.1016/j.ijrobp.2010.09.021) Copyright © 2012 Terms and Conditions
Fig. 2 Progression-free survival (PFS) rate by fractionation at 5-year follow-up. Solid line = 600 cGy × 3 (group 1) and 5-year PFS rate of 86%. Dashed line = 950 cGy × 2 (group 2) and 5-year PFS rate of 83% (p = 0.53). International Journal of Radiation Oncology • Biology • Physics 2012 82, 222-227DOI: (10.1016/j.ijrobp.2010.09.021) Copyright © 2012 Terms and Conditions
Fig. 3 Progression-free survival (PFS) rate by the number of high-risk features with 600 cGy × 3 HDR boost. Number of failures/total number of patients at 5-year PFS: solid line = none; 3/26 patients; 92%. Dashed line 1 = 11/29 patients; 79%. Dotted lines 2 and 3 = 2/9 patients; 89% (p = 0.13). International Journal of Radiation Oncology • Biology • Physics 2012 82, 222-227DOI: (10.1016/j.ijrobp.2010.09.021) Copyright © 2012 Terms and Conditions
Fig. 4 PFS rate by the number of high-risk features with 950 cGy × 2 HDR boost. Number of failures/total number of patients at 5-year PFS. Solid line = none; 1/23 patients; 95%. Dashed line 1 = 7/44 patients; 81%. Dotted lines 2 and 3 = 6/34 patients; 77% (p = 0.45). International Journal of Radiation Oncology • Biology • Physics 2012 82, 222-227DOI: (10.1016/j.ijrobp.2010.09.021) Copyright © 2012 Terms and Conditions