title: A method to reduce systematic spatial shift associated with magnetic resonance imaging.
abstract: To reduce the chemical shifts during magnetic resonance (MR) imaging, the authors replaced the petroleum gel in the Brown-Roberts-Well (BRW) MR localizer with chromium chloride. Computed tomography and MR scans were obtained of a phantom skull containing objects with known spatial coordinates. A 2-to 3-mm systematic spatial shift in the frequency-encoded direction was observed with petroleum gel, but not with CrCl3. Results were verified by reconstructing the three-dimensional spatial location of each object using X-Knife computer software. The authors conclude that spatial localization is more accurate with a CrCl3-filled than a petroleum-filled BRW-MR localizer.
authors.affiliation: Department of Neurosurgery, University of Cincinnati Medical Center, Ohio, USA.
authors.forename: J M
authors.initials: JM
authors.lastname: Taha
authors.forename: M A
authors.initials: MA
authors.lastname: Lamba
authors.forename: C
authors.initials: C
authors.lastname: Samaratunga
authors.forename: J C
authors.initials: JC
authors.lastname: Breneman
authors.forename: R E
authors.initials: RE
authors.lastname: Warnick
mesh_terms: D002712:Chlorides; D017608:Chromium Compounds; D005782:Gels; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008279:Magnetic Resonance Imaging; D010578:Petroleum; D019047:Phantoms, Imaging; D012886:Skull / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D013238:Stereotaxic Techniques; D014057:Tomography, X-Ray Computed
chemical_list: D002712:Chlorides; D017608:Chromium Compounds; D005782:Gels; D010578:Petroleum; C017133:chromous chloride