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dc.contributor.author Cho, Byunghyun -
dc.contributor.author Oka, Masamichi -
dc.contributor.author Matsumoto, Nozomu -
dc.contributor.author Ouchida, Riichi -
dc.contributor.author Hong, Jaesung -
dc.contributor.author Hashizume, Makoto -
dc.date.available 2017-07-05T08:57:03Z -
dc.date.created 2017-04-10 -
dc.date.issued 2013-05 -
dc.identifier.issn 1861-6410 -
dc.identifier.uri http://hdl.handle.net/20.500.11750/2435 -
dc.description.abstract Purpose We developed a surgical navigation system that warns the surgeon with auditory and visual feedback to protect the facial nerve with real-time monitoring of the safe region during drilling. Methods Warning navigation modules were developed and integrated into a free open source software platform. To obtain high registration accuracy, we used a high-precision laser-sintered template of the patient's bone surface to register the computed tomography (CT) images. We calculated the closest distance between the drill tip and the surface of the facial nerve during drilling. When the drill tip entered the safe regions, the navigation system provided an auditory and visual signal which differed in each safe region. To evaluate the effectiveness of the system, we performed phantom experiments for maintaining a given safe margin from the facial nerve when drilling bone models, with and without the navigation system. The error of the safe margin was measured on postoperative CT images. In real surgery, we evaluated the feasibility of the system in comparison with conventional facial nerve monitoring. Results The navigation accuracy was submillimeter for the target registration error. In the phantom study, the task with navigation (0.7 ± 0.25 mm) was more successful with smaller error, than the task without navigation (1.37 ± 0.39 mm, P<0.05). The clinical feasibility of the system was confirmed in three real surgeries. Conclusions This system could assist surgeons in preserving the facial nerve and potentially contribute to enhanced patient safety in the surgery. © 2012 CARS. -
dc.publisher Springer -
dc.title Warning navigation system using real-time safe region monitoring for otologic surgery -
dc.type Article -
dc.identifier.doi 10.1007/s11548-012-0797-z -
dc.identifier.scopusid 2-s2.0-84878015913 -
dc.identifier.bibliographicCitation International Journal of Computer Assisted Radiology and Surgery, v.8, no.3, pp.395 - 405 -
dc.subject.keywordAuthor Otologic surgery -
dc.subject.keywordAuthor Surgical navigation -
dc.subject.keywordAuthor Warning system -
dc.subject.keywordAuthor Auditory feedback -
dc.subject.keywordAuthor Visual feedback -
dc.citation.endPage 405 -
dc.citation.number 3 -
dc.citation.startPage 395 -
dc.citation.title International Journal of Computer Assisted Radiology and Surgery -
dc.citation.volume 8 -
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Department of Robotics and Mechatronics Engineering Surgical Robotics & Augmented Reality Lab 1. Journal Articles

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