[MRI imaging in cortical laminar necrosis].

PURPOSE

The goal of this study was to follow over time the MR imaging features of cortical laminar necrosis.

PATIENTS AND METHODS

Six patients with cortical laminar necrosis were included. There were two women and four men aged 54-84 years, with a mean age of 68 years. In four patients, cortical laminar necrosis was caused by ischemic stroke, one case occurred after a cardiac arrest and the last patient had a meningoencephalitis. The time delay from insult to the first MR study varied between one week and 3 months.

RESULTS

The MRI showed hyperintense lesions in the cerebral cortex on T1W and T2W images. The high intensity signal was still observed a few months after the insult. Cortical laminar necrosis lesions did not demonstrate hemorrhage on CT and MRI studies.

CONCLUSION

MRI allowed detection of cortical laminar necrosis and could differentiate it from hemorrhage.