title: Orbital Doppler sonography findings in cases of brain death.
abstract: In this study, we investigated the blood flow velocity changes in orbital arteries by using Doppler sonography in eight patients with brain death. Peak-systolic and end-diastolic velocities and resistive indices of the ophthalmic and central retinal arteries were evaluated. We observed the absence or reversal of end-diastolic blood flow in these arteries. To our knowledge, this finding has not been previously reported to be associated with brain death.
authors.affiliation: Department of Radiology, Akdeniz University Faculty of Medicine, Antalya, Turkey.
authors.forename: K
authors.initials: K
authors.lastname: Karaali
authors.forename: C
authors.initials: C
authors.lastname: Cevikol
authors.forename: U
authors.initials: U
authors.lastname: Senol
authors.forename: G
authors.initials: G
authors.lastname: Arici
authors.forename: A
authors.initials: A
authors.lastname: Kabaalioğlu
authors.forename: A
authors.initials: A
authors.lastname: Ramazanoğlu
authors.forename: O
authors.initials: O
authors.lastname: Bircan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity / Q000502:physiology; D001926:Brain Death / Q000000981:diagnostic imaging*; D003971:Diastole / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009880:Ophthalmic Artery / Q000000981:diagnostic imaging; D009915:Orbit / Q000098:blood supply*; D012161:Retinal Artery / Q000000981:diagnostic imaging; D013599:Systole / Q000502:physiology; D017585:Ultrasonography, Doppler, Transcranial; D014655:Vascular Resistance / Q000502:physiology