Experimentelle Studie zur Anwendung des Hilbertoperators als Methode zur Signalvorverarbeitung für die Bestimmung der Sauerstoffsättigung in retinalen Gefäßen - Experimental Study of the Application of the Hilbert Operator as a Signal Preprocessing Method for the Measurement of Oxygen Saturation in Retinal Vessels

1997 ◽  
Vol 42 (11) ◽  
pp. 332-336 ◽  
Author(s):  
P. Putsche ◽  
L. Leistritz ◽  
S. Leistritz ◽  
H. Witte ◽  
M. Hammer
Keyword(s):  
Experimental Study ◽  
Oxygen Saturation ◽  
Retinal Vessels ◽  
Experimentelle Studie ◽  
Preprocessing Method ◽  
Signal Preprocessing ◽  
Hilbert Operator

Oxygen Saturation in Human Retinal Vessels Is Higher in Dark Than in Light

2009 ◽  
Vol 50 (5) ◽  
pp. 2308 ◽  
Author(s):  
Sveinn Hakon Hardarson ◽  
Samy Basit ◽  
Thora Elisabet Jonsdottir ◽  
Thor Eysteinsson ◽  
Gisli Hreinn Halldorsson ◽  
...  
Keyword(s):  
Oxygen Saturation ◽  
Retinal Vessels

scholarly journals Retinal capillary oximetry with visible light optical coherence tomography

2020 ◽  
Vol 117 (21) ◽  
pp. 11658-11666 ◽  
Author(s):  
Shaohua Pi ◽  
Tristan T. Hormel ◽  
Xiang Wei ◽  
William Cepurna ◽  
Bingjie Wang ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Metabolic Rate ◽  
Visible Light ◽  
Oxygen Saturation ◽  
Vascular Diseases ◽  
Retinal Vessels ◽  
Optical Coherence ◽  
Retinal Circulation ◽  
Retinal Capillary ◽  
Vascular Plexuses

Assessing oxygen saturation (sO2) remains challenging but is nonetheless necessary for understanding retinal metabolism. We and others previously achieved oximetry on major retinal vessels and measured the total retinal oxygen metabolic rate in rats using visible-light optical coherence tomography. Here we extend oximetry measurements to capillaries and investigate all three retinal vascular plexuses by amplifying and extracting the spectroscopic signal from each capillary segment under the guidance of optical coherence tomography (OCT) angiography. Using this approach, we measured capillary sO2in the retinal circulation in rats, demonstrated reproducibility of the results, validated the measurements in superficial capillaries with known perfusion pathways, and determined sO2responses to hypoxia and hyperoxia in the different retinal capillary beds. OCT capillary oximetry has the potential to provide new insights into the retinal circulation in the normal eye as well as in retinal vascular diseases.

scholarly journals Hypoxia and hypercapnia effects on cerebral oxygen saturation in avalanche burial: A pilot human experimental study

Resuscitation ◽  
2021 ◽  
Vol 158 ◽  
pp. 175-182
Author(s):  
Giacomo Strapazzon ◽  
Hannes Gatterer ◽  
Marika Falla ◽  
Tomas Dal Cappello ◽  
Sandro Malacrida ◽  
...  
Keyword(s):  
Experimental Study ◽  
Oxygen Saturation ◽  
Cerebral Oxygen Saturation ◽  
Cerebral Oxygen

scholarly journals Dependence of diameters and oxygen saturation of retinal vessels on visual field damage and age in primary open-angle glaucoma

2015 ◽  
Vol 94 (3) ◽  
pp. 276-281 ◽  
Author(s):  
Lisa Ramm ◽  
Susanne Jentsch ◽  
Sven Peters ◽  
Lydia Sauer ◽  
Regine Augsten ◽  
...  
Keyword(s):  
Visual Field ◽  
Oxygen Saturation ◽  
Primary Open Angle Glaucoma ◽  
Open Angle Glaucoma ◽  
Retinal Vessels ◽  
Open Angle ◽  
Visual Field Damage

Investigations on the measurement of oxygen saturation in retinal vessels using polarized light

1999 ◽  
Vol 96 (7) ◽  
pp. 428-431
Author(s):  
Martin Hammer ◽  
Dietrich Schweitzer ◽  
Achim Kolb ◽  
Eike Thamm ◽  
Jürgen Strobel
Keyword(s):  
Oxygen Saturation ◽  
Polarized Light ◽  
Retinal Vessels
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