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
Bilateral Vertebral Artery Occlusion Resulting from Giant Cell Arteritis: Report of 3 Cases and Review of the Literature
Medicine 82:1-12, Ruegg,S.,et al, 2003