title: A universal method for geometric correction of magnetic resonance images for stereotactic neurosurgery.
abstract: Accurate stereotactic navigation depends strongly upon the spatial fidelity of the image used for registration. Clinically significant levels of geometric distortion are present in standard MR images, limiting their utility. A technique for correction of all geometric distortions in spine echo MR images was assessed in a prospective clinical trial of 19 stereotactic craniotomies. The Euclidean error in target registration between CT and MR was significantly reduced, from 3.833 +/- 0.992 to 1.986 +/- 0.605 mm. The results of this clinical trial support the incorporation of this MR image rectification protocol into standard clinical practice.
authors.affiliation: Department of Neurological Surgery, Vanderbilt University, Nashville, Tenn., USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Maciunas
authors.forename: J M
authors.initials: JM
authors.lastname: Fitzpatrick
authors.forename: S
authors.initials: S
authors.lastname: Gadamsetty
authors.forename: C R
authors.initials: CR
authors.lastname: Maurer
mesh_terms: D005069:Evaluation Studies as Topic; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008433:Mathematics; D009493:Neurosurgery; D011446:Prospective Studies; D013238:Stereotaxic Techniques