title: Magnetic resonance imaging of human spinal cord infarction.
abstract: Magnetic resonance images obtained in two cases of spinal cord infarction are described: one with hemorrhagic thoracic cord infarct, the other with ischemic cervical cord infarct with sequential magnetic resonance imagings. An enlarged cord with strand-shape or longitudinal hypointensity on both T1- and T2-weighted images was noticed in the hemorrhagic infarct; hypointensity on the T2-weighted image was thought to be due to hemosiderin, which shortens T2 relaxation. In the ischemic infarct, a small, round area of hypointensity on T1-weighted images, and of hyperintensity on T2-weighted images, noted 9 hours postictus ("early infarct") changed on the 22nd day to a cephalocaudal strandlike hypointensity on T1-weighted image, which was enhanced by Gd-DTPA. The hypointensity suggested "pencil-like softening" in "medium" age infarct. On postictal day 49, it showed an extensive homogeneous hypointensity involving several segments of the cord on T1-weighted images and hyperintensity on T2-weighted images with negative Gd-DTPA enhancement suggesting "late transverse infarct." We considered that these changes are of value in diagnosing spinal cord infarcts on magnetic resonance imagings.
authors.affiliation: Department of Neurosurgery, Saitama Medical School, Japan.
authors.forename: C
authors.initials: C
authors.lastname: Nagashima
authors.forename: R
authors.initials: R
authors.lastname: Nagashima
authors.forename: N
authors.initials: N
authors.lastname: Morota
authors.forename: S
authors.initials: S
authors.lastname: Kobayashi
mesh_terms: D003287:Contrast Media; D005682:Gadolinium; D019786:Gadolinium DTPA; D006801:Humans; D007238:Infarction / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid; D013116:Spinal Cord / Q000098:blood supply* / Q000473:pathology; D013997:Time Factors
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA