Imaging findings of posterior reversible encephalopathy syndrome caused by pregnancy-induced hypertension / 国际脑血管病杂志

ABSTRACT

Objective To investigate the computer tomography (CT) and magnetic res-onance imaging (MRI) features of posterior reversible encephalopathy syndrome (PRES) caused by pregnancy-indueed hypertension (PIH). Methods CT scan and MRI scan + diffusion-weighted imaging (DWI) were used in 31 patients with PIH. Results CT scan found low density lesions in parietal-occipital lobe of watershed regions in 31 patients with PIH. CT value was 19 to 23Hu. Among them, MRI showed slight hypointensity lesions on T1-weighted images and slight hyperintensity lesions on T2-weight images in 11 patients, fluid-attenuated inversion recovery (FLAIR) sequence showed hyperintensity lesions, DWI revealed isointense, and apparent diffusion coefficient- did not decrease. The recovery time of clinical symptoms was earlier than that of MRI. Conclusions The lesion sites on cr and MRI had certain characteristics in PIH occurred PRES at late pregnancy, combining clinical history a clear diagnosis could be made.