RT Journal Article SR Electronic T1 Orbital Doppler Sonography Findings in Cases of Brain Death JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 945 OP 947 VO 21 IS 5 A1 Kamil Karaali A1 Can Çevikol A1 Utku Şenol A1 Gülbin Arici A1 Adnan Kabaalioğlu A1 Atilla Ramazanoğlu A1 Oğuz Bircan YR 2000 UL http://www.ajnr.org/content/21/5/945.abstract AB Summary: 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.