Quantifying Intra-Arterial Verapamil Response as a Diagnostic Tool for Reversible Cerebral Vasoconstriction Syndrome.
J M SequeirosJorge A RoaRyan Phillip SabotinSudeepta DandapatSantiago Ortega GutierrezEnrique C LeiraColin P DerdeynGirish BathlaDavid M HasanEdgar A SamaniegoPublished in: AJNR. American journal of neuroradiology (2020)
Objective measurement of the change in the arterial calibers after intra-arterial verapamil is accurate in distinguishing reversible cerebral vasoconstriction syndrome from other vasculopathies. A proportion of change ≥32% has the best diagnostic performance.