title: Longitudinal MR imaging and proton MR spectroscopy in herpes simplex encephalitis.
abstract: Longitudinal MR imaging and proton MR spectroscopy were performed in an 11 year-old female case of herpes simplex encephalitis with a complete recovery. On MR imaging, the white matter lesions, which could be seen in the subacute stage, but not in the acute or chronic stage, might represent edema due to postinfectious neuroallergic phenomena. Proton MR spectroscopy revealed marked reduction of the NAA/Cr ratio in the chronic stage, which increased gradually to within normal range in a year.
authors.affiliation: Department of Pediatrics, Faculty of Medicine, University of Chiba, Chuo-ku, Chiba-shi, Japan.
authors.forename: J
authors.initials: J
authors.lastname: Takanashi
authors.forename: K
authors.initials: K
authors.lastname: Sugita
authors.forename: M
authors.initials: M
authors.lastname: Ishii
authors.forename: M
authors.initials: M
authors.lastname: Aoyagi
authors.forename: H
authors.initials: H
authors.lastname: Niimi
mesh_terms: D001284:Atrophy; D001921:Brain / Q000473:pathology*; D002648:Child; D004487:Edema; D018792:Encephalitis, Viral / Q000175:diagnosis*; D005260:Female; D005500:Follow-Up Studies; D006561:Herpes Simplex / Q000175:diagnosis*; D006624:Hippocampus / Q000473:pathology; D006801:Humans; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D010296:Parietal Lobe / Q000473:pathology; D013702:Temporal Lobe / Q000473:pathology; D013997:Time Factors