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
Progressive Neurological Impairment and an Enhancing Brainstem Lesion in a Middle-Aged Man
JAMA Neurol 76:1397-1398, Gupta, S.,et al, 2019