The echoCHOLE Surgical Imaging System is a low-profile, hands-free device designed for use in the operating room to improve the success rate of minimally-invasive gallbladder removals (laparoscopic cholecystectomies).  These procedures are the leading cause of malpractice claims against general surgeons due to the frequent occurrence of adverse events during the procedure, such as damage to the common bile duct.  The value of this system lies in its potential to minimize the risk of adverse events by providing the surgeon with an enhanced, annotated 4D image which maximizes the surgeon's spatial understanding of the surgical site.