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Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference 2013年07月 口頭発表(一般)
ビデオ画像を左右にずらし、ディスプレイの画面より少し奥に見えるように両眼に呈示する「リアルビジョン」方式は、厳密には立体視ではないと考えられるにもかかわらず、奥行き感があり長時間見続けても疲労が少なく、通常のビデオ画像に比べて内視鏡手術での操作性が向上すると言われている。このリアルビジョン方式による疑似立体視効果を評価するため、奥行き知覚・操作性について心理物理実験を、また同時にアンケートによる官能検査を行い、通常のビデオ画像と比較した。その結果、心理物理実験では両者に有意な差は見られなかったが、官能検査で「奥行き感」などに有意差が見られ、心理的な効果に差があることが確かめられた。RealVision is said to give a pseudo stereoscopic effect by adding a constant binocular parallax to a monocular video image. The effect is not a true stereoscopy, however, surgeons who have used it in endoscopic surgery say that it gives good stereoscopic effect with much less fatigue than real 3D stereoscopic display. The authors conducted experiments to evaluate the effect. The results of psychophysical experiments showed no significant difference between RealVision and the conventional monocular video image, though, a few factors including depth perception in sensory evaluation tests gave significant differences.
Surgical operations cannot be completed without a human to operate medical devices and make various judgments. In the evaluation and development of new medical devices and therapies, how health professionals master medical devices is an important issue. Thus, we have quantitatively evaluated effectiveness and skills regarding both machines and humans using ergonomic methods such as motion analysis and kinesthetic measurement.
We have been developing display methods for clinical images to maximize the utilization of human sensory abilities. Our researches are contributing not only to better medical device design, but also to the development of surgical training simulators, enhancement of medical education systems, and improvement of clinical safety.