The VTI Laparoscopic Doppler System is a blood flow detector that compensates for the loss of tactile sensation during laparoscopic procedures by helping the surgeon to identify vascular anatomy before it is visible to the eye. The system's sterile doppler probes fit through standard 5mm ports. It is simple to use and no special training is required. This study is designed to evaluate the use of the VTI (Nashua, NH) 20 megahertz (MHz) Microvascular Doppler probe in laparoscopic urological surgery.
Patients will take a preoperative sexual health inventory for men (SHIM) questionnaire. The investigators will then assess presence or absence of arterial and venous blood flow, in real-time during surgery. Additionally, the investigators will evaluate the safety of Doppler probe use, the surgical margin status on final pathology, and the post-operative erectile function of the patients with a followup SHIM questionnaire (to be performed 3 months after surgery). Finally, the robotic surgeon will document whether or not our original surgical plan was changed or remained the same after the Doppler use.
