新規に開発したレジストレーションアームを用いた術中レジストレーション法の提案

抄録

The progress of the intraoperative imaging technology has had dramatic impact on brain tumor surgery. Intraoperative MRI (iMRI) with a navigation system has been used for brain tumor removal at Nagoya University Hospital. Restore-registration method is one of the registration methods using iMRI, performs the registration by using preoperative registration and image fusion information. Although the accuracy of navigation system strongly influenced on registration method, the accuracy of restore registration fell low occasionally. The purpose of this study was to improve the navigation accuracy using intraoperative re-registration with newly developed registration arm, set easily on the headframe. It enable update the registration information. The accuracy of re-registration with the registration arm was superior than that of Restore-registration method (without using the registration arm). In conclusion, improvements of navigation accuracy were confirmed to compare between the restore registration and the re-registration.