1998 年 3 巻 4 号 p. 221-227
This paper presents a performance evaluation of two kinds of surgical navigation display systems for endoscopic sinus surgery. Conventional surgical navigation systems with a triplanar display lack information of endoscope viewing direction. Our new system shows a single perspective view of the patient and the endoscope model that has a viewing cone with a simulated light to indicate the viewing direction and visual field. A performance experiment with a dummy skull revealed characteristics of these two navigation systems: the perspective display navigation with a coronal clipping plane showed better performance in the case of difficult tasks, while the triplanar display navigation was almost ignored by the subjects.