Study of human factors in registration quality to improve the reliability of a surgical navigation system requiring no skill

一种用于主动脉血管手术的手术导航系统已被开发并应用于临床试验。根据我们早期的经验，该系统需要提高可用性和可靠性。尤其是在注册过程中，减少人为因素的差错是一个不可避免的问题。切开前手动选择皮下骨投影点作为注册点。估计了人为因素造成的误差，如手术位置和组织厚度，并检查了矫正方法。此外，在开胸手术后，利用体内和体表上的结合点进行配准，以调整目标动脉。结果表明，更新后的系统设置简单，有助于靶动脉的检测。

A surgical navigation system for aortic vascular surgery have been developed and applied in clinical trials. Through our early experience, the system needed to improve the usability and the reliability. Especially, in registration process, it was an inevitable issue to reduce errors based on human factors. Projections of the bone under skin were manually selected as registration points before the incision. Errors caused by human factors, such as the surgical position and as the tissue thickness, were estimated and correction methods were examined. Besides, the combination points on the internal and surface body were utilized for registration after the thoracotomy to adjust a target artery. It was concluded that the renewed system could be easily set up and would be helpful to detect the target artery.