A Vertebral Artery Halo Sign Indicates Giant Cell Arteritis Affecting the Posterior Circulation of the Brain
Lancet 397:e6, Lambrechts, R.A.,et al, 2021
Complications of Epidural Anesthesia:MR Appearance of Abnormalities
Radiology 181:549-554, Sklar,E.M.L.,et al, 1991