title: The quality of functional MR images in patients with brain tumors: influences of neurological disorders and tumor location.
abstract: The aim of our study was to investigate the influence of neurological disorders, and the influence of tumor and perifocal edema location on functional magnetic resonance imaging (fMRI) quality. fMRI quality tended to be better the closer the tumor and the perifocal edema were located to the pmc. Hemipareses and seizures had no significant influence on fMRI quality. Therefore, hemiparetic patients do not have to be excluded beforehand. The evaluation of time courses is essential before using z-maps to localize eloquent brain regions preoperatively.
authors.affiliation: Department of Neurosurgery, University of Regensburg, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Schlaier
authors.forename: C
authors.initials: C
authors.lastname: Fellner
authors.forename: J
authors.initials: J
authors.lastname: Schwerdtner
authors.forename: J
authors.initials: J
authors.lastname: Seitz
authors.forename: A
authors.initials: A
authors.lastname: Brawanski
mesh_terms: D000328:Adult; D000368:Aged; D000465:Algorithms; D016477:Artifacts; D001929:Brain Edema / Q000175:diagnosis* / Q000473:pathology; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000556:secondary; D005260:Female; D005910:Glioma / Q000175:diagnosis / Q000473:pathology; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009044:Motor Cortex / Q000473:pathology; D010291:Paresis / Q000503:physiopathology; D012640:Seizures / Q000503:physiopathology; D013997:Time Factors