Quantitative Magnetic Resonance Angiography Fails to Screen In-Stent Restenosis but Predicts Good Long-Term Outcome

Wingspan stent in the setting of symptomatic intracranial atherosclerotic disease (ICAD) has shown to be associated with in-stent restenosis (ISR). Conventional angiography is typically used detect ISR, but quantitative magnetic resonance (QMRA), a non-invasive measure blood hemodynamics, also been screen for ISR. This report highlights case where QMRA failed ISR patient who received vertebral artery stenosis predicted good long-term outcome. The remained asymptomatic and had robust vertebrobasilar flow at follow-up despite developing