title: [Blood flow of the vertebral artery in cases of pontine high intensity area identified by T2-weighted MRI--a study with ultrasonography of vertebral arteries].
abstract: Ultrasonography of vertebral arteries (Duplex method) was conducted in cases of pontine high intensity area identified by T2-weighted MRI. Patients complaining headache, vertigo and dizziness were classified into two groups: 19 cases with pontine high intensity area; and 58 cases of control without abnormality in the pons. In comparison with the control, the cases with pontine high intensity area had lower minimum diastolic flow velocity and stroke volume in the dominant vertebral artery, suggesting the presence of basilar artery insufficiency. These findings may support previous data that pontine high intensity area represents diffuse ischemia in the brainstem.
authors.forename: M
authors.initials: M
authors.lastname: Watanabe
mesh_terms: D000368:Aged; D001783:Blood Flow Velocity; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011149:Pons / Q000473:pathology*; D012039:Regional Blood Flow / Q000502:physiology; D018084:Ultrasonography, Interventional; D014711:Vertebral Artery / Q000000981:diagnostic imaging* / Q000502:physiology*