Real-time Intraoperative Computed Tomography Assessment of Quality of Permanent Interstitial Seed Implantation for Prostate Cancer, Michael J. Zelefsky, Mick Worman, Gilad N. Cohen, Xin Pei, Marisa Kollmeier, Josh Yamada, Brett Cox, Zhigang Zhang, Eva Bieniek, Lawrence Dauer, and Marco Zaider, From the Departments of Radiation Oncology, Brachytherapy Service, Medical Physics, and Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York