Epileptic seizures associated with hyperglycemia have a rare but characteristic MR imaging pattern which however is frequently missed. It consists of a T2 hypointensity and an apparent diffusion coefficient (ADC) decrease of the white matter underlying the epileptic cortex; the cortex itself may be DWI hyperintense and show a blood-brain barrier disruption. Prompt diagnosis is relevant since treatment of the hyperglycemic state rather than treatment with anti-epileptic drugs frequently interrupts the seizures. Subcortical T2 hypointensity and ADC decrease may be completely reversible.

中文翻译：

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高血糖和癫痫发作的患者“ T2阴性穿透”：经常被忽略的MRI模式。

与高血糖症相关的癫痫性发作具有罕见但特征性的MR成像模式，但常常被遗漏。它由T2低强度和癫痫皮质下白质的表观扩散系数（ADC）降低组成。皮质本身可能是DWI的高信号，并显示血脑屏障破坏。及时诊断很重要，因为高血糖状态的治疗而不是抗癫痫药的治疗经常会中断癫痫发作。皮层下T2低强度和ADC降低可能是完全可逆的。