title: MRI-guided endoscopy in the brain: a feasability study.
abstract: For neuronavigation in neuroendoscopy conventional navigation systems cannot exclude tissue movements caused by loss of cerebrospinal fluid (CSF). Open MRI can serve as a real-time navigation system if special conditions of endoscopic instruments and equipment are followed. We adapted an endoscopic system to the MRI and installed a miniaturized laser guidance system to project the central transaxial and coronal planes onto the phantom. A human cadaveric model was examined with a flexible microendoscope marked with a titanium wire inside the open magnet. The procedures were guided by gradient echo sequences refreshing the image every 4.5 seconds to control position of the endoscope. Endoscopic and corresponding MRI-findings are presented. Results and technical conditions are discussed.
authors.affiliation: Department of Neurosurgery, Ruhr-University Bochum, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Scholz
authors.forename: M
authors.initials: M
authors.lastname: Deli
authors.forename: U
authors.initials: U
authors.lastname: Wildförster
authors.forename: K
authors.initials: K
authors.lastname: Wentz
authors.forename: A
authors.initials: A
authors.lastname: Recknagel
authors.forename: H
authors.initials: H
authors.lastname: Preuschoft
authors.forename: A
authors.initials: A
authors.lastname: Harders
mesh_terms: D016477:Artifacts; D001921:Brain / Q000033:anatomy & histology*; D019723:Endoscopes; D004724:Endoscopy / Q000379:methods*; D004867:Equipment Design; D005240:Feasibility Studies; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000295:instrumentation; D014741:Video Recording