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MRA and CTA with catheter angiography for the detection of intracranial, large-artery stenosis (50–99%). [55] TCD and MRA had negative predictive values of 72–86% and positive predictive ...

Patients with vertebrobasilar stenosis are currently being enrolled in two other randomized studies; the Vertebral Artery Stenting Trial (VAST), 8 for stenting of intracranial or extracranial ...