MRI - MRI with contrast and TOF
After 24 hours of PRES management, an MRI was performed and showed T1 hypointense, and T2 hyperintense "finger-like" lesions with high signal on FLAIR images involving bilateral occipital, parietal, and part of frontal lobes. The lesions show no significant diffusion restriction on DWI/ADC mapping. There are also a few patchy cortical post-contrast enhancements and a beaded or string of pearls appearance of the right PCA, likely indicating vasospasm.
On time-of-flight images, MR venography, and MR angiography, no filling defects or aneurysms were observed.