来自：双语学影像；本期病例选自AJNR Case of the Week
Pedram Parva, MD；Clinical Instructor in Radiology；Harvard Medical School；VA Hospital and Healthcare System；Boston, MA
DescriptionA 35-year-old man with change in mental status following seizures
35岁男性，癫痫发作后精神异常。
Axial DWI:
T2 GRE:
axial FLAIR:
One-week follow-up T2-FLAIR:
LegendsAxial DWI (A), T2 GRE (B), and axial FLAIR (C) R sequences demonstrate bilateral symmetric hippocampal restricted diffusion with no signs of hemorrhage and associated increased T2 signal and mild swelling. One-week follow-up T2-weighted FLAIR MR sequence (D) demonstrates resolution of the T2W signal abnormality.
横断位DWI、T2 GRE、FLAIR序列示：双侧海马区对称性弥散受限，未见明显出血灶，T2WI见海马区轻度水肿、呈稍高信号。
1周后复查，T2-FLAIR序列示海马区异常信号消失。
Postictal Signal Changes
癫痫发作后脑信号改变
Key Diagnostic FeaturesCT: transient focal decreased gyral or hippocampal attenuation
CT:海马或脑回一过性密度减低。
MRI: transient increased signal on FLAIR and T2WI (most common in the frontal and parietal lobes but also seen in the temporal and occipital lobes)
MRI：T2WI及FLAIR一过性信号增高（常见于额、顶叶，也可见于颞叶和枕叶）
Reversible diffusion restriction and abnormal cortical enhancement has been reported.
有文献报道，病灶弥散受限，并可见皮层区异常强化。
These findings presumably reflect postictal changes induced by seizure.
这些表现可能与癫痫发作后的改变有关。
Rx
Medical management according to seizures etiology
针对癫痫病因药物治疗
