title: Time-of-flight effects in MR imaging of flow.
abstract: This article provides a brief overview of one of the two fundamental physical principles which lead to a modulation of the magnetic resonance signal of moving spins: the time-of-flight effect. It then discusses some of its characteristic manifestations in spin-echo imaging and reviews strategies for exploiting the effect to quantitate vascular flow.
authors.affiliation: Hospital of the University of Pennsylvania, Philadelphia 19104.
authors.forename: F W
authors.initials: FW
authors.lastname: Wehrli
mesh_terms: D001775:Blood Circulation; D001783:Blood Flow Velocity; D006801:Humans; D008279:Magnetic Resonance Imaging; D013997:Time Factors