title: Noninvasive measurement of cerebral blood flow: techniques and limitations.
authors.forename: J M
authors.initials: JM
authors.lastname: Murkin
authors.forename: D H
authors.initials: DH
authors.lastname: Lee
mesh_terms: D001783:Blood Flow Velocity; D002560:Cerebrovascular Circulation; D000075202:Contraindications; D006801:Humans; D014463:Ultrasonography / Q000379:methods*