title: A hippocampal lesion detected by high-field 3 tesla magnetic resonance imaging in a patient with temporal lobe epilepsy.
abstract: Nearly 80% of patients with temporal lobe epilepsy have some types of lesion identified by conventional 1.5 tesla (T) magnetic resonance imaging (MRI). We performed high-field 3 T MRI in a 5-year-old patient with recurrent complex partial seizures who was diagnosed as having right temporal lobe epilepsy based on the results of single photon emission computed tomography and ictal video-electroencephalogram monitoring, because 1.5 T MRI failed to detect any abnormalities in the suspected region. High-field 3 T MRI revealed a small high-intensity lesion on fast spin-echo short inversion time inversion-recovery images of the hippocampus, possibly responsible for the seizures. This is the first report detecting a hippocampal lesion by 3 T MRI, which could not be found by conventional 1.5 T MRI.
authors.affiliation: Department of Pediatrics, Akita University School of Medicine, Japan. sawaishi@med.akita-u.ac.jp
authors.forename: Yukio
authors.initials: Y
authors.lastname: Sawaishi
authors.forename: Makoto
authors.initials: M
authors.lastname: Sasaki
authors.forename: Tamami
authors.initials: T
authors.lastname: Yano
authors.forename: Aya
authors.initials: A
authors.lastname: Hirayama
authors.forename: Jinzo
authors.initials: J
authors.lastname: Akabane
authors.forename: Goro
authors.initials: G
authors.lastname: Takada
mesh_terms: D001930:Brain Injuries / Q000175:diagnosis*; D002675:Child, Preschool; D004569:Electroencephalography; D004833:Epilepsy, Temporal Lobe / Q000473:pathology*; D005260:Female; D006624:Hippocampus / Q000293:injuries* / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012640:Seizures; D013702:Temporal Lobe / Q000473:pathology; D015899:Tomography, Emission-Computed, Single-Photon