title: Laser speckle analysis of retinal vascular dynamics.
abstract: Studies of vascular responses are usually performed on isolated vessels or on single vessels in vivo. This allows for precise measurements of diameter or blood flow. However, dynamical responses of the whole microvascular network are difficult to access experimentally. We suggest to use full-field laser speckle imaging to evaluate vascular responses of the retinal network. Image segmentation and vessel recognition algorithms together with response mapping allow us to analyze diameter changes and blood flow responses in the intact retinal network upon systemic administration of the vasoconstrictor angiotensin II, the vasodilator acetylcholine or on the changing level of anesthesia in in vivo rat preparations.
authors.affiliation: Department of Biomedical Sciences, Copenhagen University, Blegdamsvej 3, 2200 Copenhagen N, Denmark.
authors.forename: Anastasiia Y
authors.initials: AY
authors.lastname: Neganova
authors.affiliation: Department of Biomedical Sciences, Copenhagen University, Blegdamsvej 3, 2200 Copenhagen N, Denmark.
authors.forename: Dmitry D
authors.initials: DD
authors.lastname: Postnov
authors.affiliation: Department of Biomedical Sciences, Copenhagen University, Blegdamsvej 3, 2200 Copenhagen N, Denmark.
authors.forename: Jens Christian B
authors.initials: JC
authors.lastname: Jacobsen
authors.affiliation: Department of Biomedical Sciences, Copenhagen University, Blegdamsvej 3, 2200 Copenhagen N, Denmark.
authors.forename: Olga
authors.initials: O
authors.lastname: Sosnovtseva
keywords: (120.6150) Speckle imaging; (170.1470) Blood or tissue constituent monitoring; (170.5380) Physiology