Intraoperative ultrasonography was initially used after 1960. There are also few reports on initial experiences published during the 50'. This technique was firstly used to study cerebral tumors and later on it was also used to evaluate biliary and renal calculi. At that time, intraoperative ultrasonography with A-mode or nonreal-time B-mode imaging did not achieve great recognition by surgeons and clinicians. However, the efforts of the initial reports were used in the development of modern intraoperative ultrasonography using real-time B-mode imaging. The authors comment on the evolution of intraoperative ultrasonography since its birth up to date.
Intraoperative ultrasonography; Ultrasonography with A-mode imaging; Ultrasonography with nonreal-time B-mode imaging
