title: Method for correcting magnetic resonance image distortion for frame-based stereotactic surgery, with preliminary results.
abstract: We previously described a technique for correcting patient-specific magnetic field inhomogeneity spatial distortion in magnetic resonance images (MRI), which was not applicable to patients fitted with MRI-compatible stereotactic fiducial frames. Here we describe an improvement to the technique that permits application for these patients. Measurements with a cadaver head show that this method achieves MRI stereotactic localization accuracy of 1 mm.
authors.affiliation: Department of Radiology, Stanford University School of Medicine, California 94305-5488, USA. sumane@grapes.stanford.edu
authors.forename: T S
authors.initials: TS
authors.lastname: Sumanaweera
authors.forename: J R
authors.initials: JR
authors.lastname: Adler
authors.forename: G H
authors.initials: GH
authors.lastname: Glover
authors.forename: P F
authors.initials: PF
authors.lastname: Hemler
authors.forename: P A
authors.initials: PA
authors.lastname: van den Elsen
authors.forename: D
authors.initials: D
authors.lastname: Martin
authors.forename: S
authors.initials: S
authors.lastname: Napel
mesh_terms: D006257:Head / Q000033:anatomy & histology; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging; D009493:Neurosurgery; D019047:Phantoms, Imaging; D013238:Stereotaxic Techniques