PMID- 23552098 OWN - NLM STAT- MEDLINE DCOM- 20140801 LR - 20140304 IS - 1755-3768 (Electronic) IS - 1755-375X (Linking) VI - 92 IP - 2 DP - 2014 Mar TI - Retinal and choroidal intravascular spectral-domain optical coherence tomography. PG - 126-32 LID - 10.1111/aos.12048 [doi] AB - PURPOSE: To examine retinal and choroidal blood vessels using spectral-domain optical coherence tomography (SD-OCT). METHODS: Retrospective case series. RESULTS: Scans through retinal blood vessels in healthy subjects demonstrated vessel wall reflexes and a tri-layer profile of the blood column on longitudinal scans and a figure-of-eight configuration on cross-sectional scans. Intravascular reflectivity decreased with increasingly oblique angles of observation and was absent when blood flow was parallel to the line of sight. The high blood flow in the choroidal vessels in healthy subjects and the low flow in the retinal vessels in patients with ocular ischaemic syndrome and central retinal artery occlusion were both associated with lower reflectivity of the blood and an unstructured intravascular SD-OCT profile. DISCUSSION: This qualitative in vivo study found a characteristically structured SD-OCT profile of the blood column in retinal vessels with normal blood flow. Both structure and total reflectivity faded when blood flow was lower or higher than normal or at oblique angles to the line of sight. In conclusion, SD-OCT scans of the vessels in the posterior pole of the eye may assist the clinical assessment of gross abnormalities of ocular blood flow, e.g. in carotid artery stenosis. CI - (c) 2013 The Authors Acta Ophthalmologica (c) 2013 Acta Ophthalmologica Scandinavica Foundation. FAU - Willerslev, Anne AU - Willerslev A AD - Department of Ophthalmology, Glostrup Hospital, Glostrup, DenmarkFaculty of Health Sciences, University of Copenhagen, Copenhagen, DenmarkDepartment of Ophthalmology, Roskilde Hospital, Roskilde, Denmark. FAU - Li, Xiao Q AU - Li XQ FAU - Cordtz, Peter AU - Cordtz P FAU - Munch, Inger C AU - Munch IC FAU - Larsen, Michael AU - Larsen M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130401 PL - England TA - Acta Ophthalmol JT - Acta ophthalmologica JID - 101468102 SB - IM MH - Adult MH - Blood Flow Velocity/physiology MH - Child MH - Choroid/*blood supply MH - Cross-Sectional Studies MH - Female MH - Humans MH - Ischemia/*physiopathology MH - Male MH - Middle Aged MH - Regional Blood Flow/physiology MH - Retinal Artery Occlusion/*physiopathology MH - Retinal Vessels/*physiology MH - Retrospective Studies MH - *Tomography, Optical Coherence MH - Young Adult OTO - NOTNLM OT - blood flow imaging OT - central retinal artery occlusion OT - choroidal blood flow OT - in vivo OT - ocular ischemic syndrome OT - optical coherence tomography OT - red blood cell alignment OT - retinal blood flow OT - shear rate EDAT- 2013/04/05 06:00 MHDA- 2014/08/02 06:00 CRDT- 2013/04/05 06:00 PHST- 2013/04/05 06:00 [entrez] PHST- 2013/04/05 06:00 [pubmed] PHST- 2014/08/02 06:00 [medline] AID - 10.1111/aos.12048 [doi] PST - ppublish SO - Acta Ophthalmol. 2014 Mar;92(2):126-32. doi: 10.1111/aos.12048. Epub 2013 Apr 1.