BACKGROUND AND PURPOSE:In acute hepatic encephalopathy, MR imaging abnormalities have been described in the PVWM, thalami, and corticospinal tracts. We sought to determine characteristic regions of involvement on FLAIR and DWI, to evaluate their reversibility, and to correlate MR imaging extent with clinical severity.

Duplication of vertebral artery is a very rare finding. Here, we present a case of vertebral artery duplication, cervical vertebral artery aneurysm and multiple intracranial aneurysms in a 59-year-old woman. This is the first case of vertebral artery duplication with cervical vertebral artery and intracranial aneurysms.

BACKGROUND AND PURPOSE: Evidenced-based protocols for fluoroscopically guided LP do not exist. This study analyzed the fluoroscopically guided LP techniques currently used by practicing neuroradiologists.