title: 4.0 Tesla magnetic resonance imaging of brainstem lesions with ocular motility deficits.
abstract: The authors studied six patients with brainstem ocular motility deficits with 4.0 Tesla (T) magnetic resonance imaging to investigate whether a higher field strength would produce superior images compared with 1.5T. In four patients whose lesions were evident on 1.5T, the increased signal-to-noise achieved with 4.0T allowed for better resolution at 1-mm slice thickness than was achieved at the standard 5-mm slice thickness with 1.5T. In the two patients with unremarkable 1.5T scan results, 4.0T also failed to demonstrate a lesion. Therefore, 4.0T imaging has superior resolution to 1.5T imaging and can provide more detailed images of lesions identified by 1.5T.
authors.affiliation: Department of Neurology, Hospital of the University of Pennsylvania, Philadelphia 19104, USA.
authors.forename: V S
authors.initials: VS
authors.lastname: Pelak
authors.forename: L
authors.initials: L
authors.lastname: Bolinger
authors.forename: S L
authors.initials: SL
authors.lastname: Galetta
authors.forename: N
authors.initials: N
authors.lastname: Butler
authors.forename: A
authors.initials: A
authors.lastname: Stein
authors.forename: G T
authors.initials: GT
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D001927:Brain Diseases / Q000175:diagnosis*; D001933:Brain Stem / Q000473:pathology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015835:Ocular Motility Disorders / Q000175:diagnosis*