USEFULNESS OF SIMULATION OF SURGICAL APPROACHES TO CEREBRAL ANEURYSMSBY HELICAL SCANNING CT (HES-CT)

Using multiplanar reconstruction (MPR) CT imaging method, virtual view s of various surgical approaches were compared preoperatively, With th is technique, not only virtual surgical views of aneurysms and related vasculature, but also surgical views after virtual resection of skull base bone to a desirable extent are freely available. We operated fou r aneurysm cases after comparing various surgical approaches by this i maging method. It was found that these preoperative simulated images w ere very useful at surgery of complicated aneurysm cases.