title: Magnetic resonance imaging in preterm infants.
abstract: Magnetic resonance imaging was performed in 9 preterm infants at 37-43 weeks postmenstrual age. They all were born at 26-35 weeks gestation. Myelination was graded according to its most cephalic location. Myelination pattern 2 (myelination observed in the posterior limb of the internal capsule and adjacent structures of the thalamus and lenticular nucleus) was demonstrated in 2 infants, pattern 3 (myelination of the corona radiata) in 3 infants, and pattern 4 (myelination of the centrum semiovale) in 4 infants. Bilateral low intensity areas were found on T1-weighted images in 7 infants and a ribbon-like, high intensity was observed in 5. These findings revealed a wide variety of magnetic resonance imaging appearance in apparently normal preterm infants. Caution is needed in interpreting the pathologic nature of such features in preterm infants during the perinatal period.
authors.affiliation: Department of Pediatrics, Fukui Medical School, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Konishi
authors.forename: M
authors.initials: M
authors.lastname: Kuriyama
authors.forename: K
authors.initials: K
authors.lastname: Hayakawa
authors.forename: K
authors.initials: K
authors.lastname: Konishi
authors.forename: M
authors.initials: M
authors.lastname: Yasujima
authors.forename: Y
authors.initials: Y
authors.lastname: Fujii
authors.forename: M
authors.initials: M
authors.lastname: Sudo
authors.forename: Y
authors.initials: Y
authors.lastname: Ishii
mesh_terms: D001238:Asphyxia Neonatorum / Q000175:diagnosis; D001921:Brain / Q000473:pathology*; D001925:Brain Damage, Chronic / Q000175:diagnosis*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000175:diagnosis*; D008279:Magnetic Resonance Imaging; D008297:Male; D009413:Nerve Fibers, Myelinated / Q000473:pathology; D009460:Neurologic Examination; D012127:Respiratory Distress Syndrome, Newborn / Q000175:diagnosis; D013036:Spasms, Infantile / Q000175:diagnosis