Transrectal Ultrasound Imaging of the Prostate Gland and Neurovascular Bundles During Robot-Assisted Laparoscopic Radical Prostatectomy

Neurovascular bundle (NVB) contains capsular vessels to the prostate and cavernous nerves that provides the macroscopic landmark used during nerve-sparing radical prostatectomy. The preservation of NVB during radical prostatectomy improves postoperative recovery of potency and continence. However, the visualization of the NVB during radical prostatectomy can be challenging. Recently, an attempt has been made to use a transrectal ultrasound (TRUS) imaging to delineate the anatomy of the prostate gland and NVB during laparoscopic radical prostatectomy. However, it is difficult to obtain a steady image of TRUS with an operator. The investigators plan to perform a feasibility study to obtain TRUS imaging of the prostate and NVB during robot-assisted laparoscopic radical prostatectomy (RALRP). The investigators plan to use a robot-assisted TRUS probe holder to gently manipulate the probe to obtain steady TRUS images that may aid in visualization and dissection of the NVB during RALRP.