title: Clinical indications for high-field 1.5 T intraoperative magnetic resonance imaging and neuro-navigation for neurosurgical procedures. Review of initial 100 cases.
abstract: Initial experiences are reviewed in an integrated operation theater equipped with an intraoperative high-field (1.5 T) magnetic resonance (MR) imager and neuro-navigation (BrainSUITE), to evaluate the indications and limitations. One hundred consecutive cases were treated, consisting of 38 gliomas, 49 other tumors, 11 cerebrovascular diseases, and 2 functional diseases. The feasibility and usefulness of the integrated theater were evaluated for individual diseases, focusing on whether intraoperative images (including diffusion tensor imaging) affected the surgical strategy. The extent of resection and outcomes in each histological category of brain tumors were examined. Intraoperative high-field MR imaging frequently affected or modified the surgical strategy in the glioma group (27/38 cases, 71.1%), but less in the other tumor group (13/49 cases, 26.5%). The surgical strategy was not modified in cerebrovascular or functional diseases, but the success of procedures and the absence of complications could be confirmed. In glioma surgery, subtotal or greater resection was achieved in 22 of the 31 patients (71%) excluding biopsies, and intraoperative images revealed tumor remnants resulting in the extension of resection in 21 of the 22 patients (95.4%), the highest rate of extension among all types of pathologies. The integrated neuro-navigation improved workflow. The best indication for intraoperative high-field MR imaging and integrated neuro-navigation is brain tumors, especially gliomas, and is supplementary in assuring quality in surgery for cerebrovascular or functional diseases. Immediate quality assurance is provided in several types of neurosurgical procedures.
authors.affiliation: Department of Neurosurgery, Nagoya Central Hospital, Nagoya, Aichi, Japan. smaesawa@med.nagoya-u.ac.jp
authors.forename: Satoshi
authors.initials: S
authors.lastname: Maesawa
authors.forename: Masazumi
authors.initials: M
authors.lastname: Fujii
authors.forename: Norimoto
authors.initials: N
authors.lastname: Nakahara
authors.forename: Tadashi
authors.initials: T
authors.lastname: Watanabe
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Saito
authors.forename: Yasukazu
authors.initials: Y
authors.lastname: Kajita
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Nagatani
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Wakabayashi
authors.forename: Jun
authors.initials: J
authors.lastname: Yoshida
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001932:Brain Neoplasms / Q000473:pathology / Q000601:surgery; D002561:Cerebrovascular Disorders / Q000473:pathology / Q000601:surgery; D002648:Child; D005260:Female; D005910:Glioma / Q000473:pathology / Q000601:surgery; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology / Q000517:prevention & control; D007432:Intraoperative Period / Q000295:instrumentation* / Q000379:methods; D008279:Magnetic Resonance Imaging / Q000295:instrumentation* / Q000379:methods; D008297:Male; D008875:Middle Aged; D038361:Neuronavigation / Q000295:instrumentation* / Q000379:methods; D009493:Neurosurgery / Q000295:instrumentation* / Q000379:methods; D019635:Neurosurgical Procedures / Q000295:instrumentation* / Q000379:methods; D009873:Operating Rooms / Q000379:methods / Q000458:organization & administration*; D017063:Outcome Assessment, Health Care / Q000379:methods; D011787:Quality of Health Care / Q000592:standards; D012189:Retrospective Studies; D055815:Young Adult