MURAGAKI Yoshihiro    Department   School of Medicine(Tokyo Women's Medical University Hospital), School of Medicine    Position   Visiting Professor
Language	Japanese
Title	Development of a Navigation System to Correct a Bed-Motion Effect in Arterial Graft Replacement Surgery
Conference Type	Nationwide Conferences
Presentation Type	Speech
Lecture Type	General
Date	2008/10/31
Society abstract	日本コンピュータ外科学会誌 10(3),309-310 2008
Summary	Abstract: Recently, we have been developing a navigation system foraortic surgery that supports surgeons to visualize relative position between the aorta and the surrounding arteries with the three-dimensional CT images. The system has been utilized for thoracoabdominal aortic surgery since July2006. Next, it is aimed to improve the usability of the system to be widely used for general hospitals. This paper reports a newly developed marker system to correct a bed-motion effect in the navigation surgery. Firstly, the navigation system embedding the marker system was applied for the human model. In this case, the navigation was well-conducted in response to the bed-motion. Next, the patient's body movement was measured for the bed motion effect. It was examined for four volunteers. As a result, it was found that the total displacement of the positional relationships between the bed and the patient's body was8.5mm or less for the rotation from the abdomen to the back side of body. Consequently, the accuracy of the system is sufficient about10.0mm in the direction from the head to the feet. It is concluded that for a newly developed marker system was achieved to correct a bed-motion effect in the navigation for aortic surgery with sufficient accuracy.