Noncontrast Hybrid Arterial Spin-Labeled Imaging of the Intracranial Arteries.

Objective: The purpose of this study is to evaluate feasibility, image quality (IQ), and accuracy of noncontrast hybrid arterial spin labeling (NoHASL) magnetic resonance angiography (MRA) compared with time of flight (TOF) MRA and contrast-enhanced (CE) MRA in patients with known/suspected cerebrovascular ischemia.

Methods: Thirty inpatients were imaged at 1.5 T.