Medical navigation system for otologic surgery based on hybrid registration and virtual intraoperative computed tomography

Jaesung Hong, Nozomu Matsumoto, Riichi Ouchida, Shizuo Komune, Makoto Hashizume

Research output: Contribution to journalArticle

50 Citations (Scopus)


An image-guided surgical system for otologic surgery was developed and clinically evaluated. With reliable hybrid registration, real-time patient movement compensation and virtual intraoperative computed tomography imaging have been originally proposed. In contrast to the commercially available systems that mainly use 2-D images for pointing probes, in this system, the surgical drill position is navigated and displayed in the 3-D space with real-time surface rendering. In a temporal bone model study, the navigation accuracy was 1.12 ± 0.09 mm with regard to the target registration error. Initial clinical evaluation of the proposed method was performed in five cochlea implantation surgeries. Accurate insertion of the electrodes into the cochlea was achieved, and the facial nerve was protected from injury in all surgeries. The proposed method could be applied to various surgeries for accurate targeting and protection of critical organs.

Original languageEnglish
Article number4663632
Pages (from-to)426-432
Number of pages7
JournalIEEE Transactions on Biomedical Engineering
Issue number2
Publication statusPublished - Feb 1 2009


All Science Journal Classification (ASJC) codes

  • Biomedical Engineering

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