Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA.
Opt Lett. 2013 Jun 1;38(11):1796-8. doi: 10.1364/OL.38.001796.
We applied a visible-light spectroscopic optical coherence tomography (vis-OCT) for in vivo retinal oximetry. To extract hemoglobin oxygen saturation (sO(2)) in individual retinal vessels, we established a comprehensive analytical model to describe optical absorption, optical scattering, and blood cell packing factor in the whole blood and fit the acquired vis-OCT signals from the bottom of each imaged vessel. We found that averaged sO(2) values in arterial and venous bloods were 95% and 72%, respectively.
我们应用可见光谱光学相干断层扫描(vis-OCT)进行活体视网膜血氧测定。为了从每个成像血管的底部提取单个视网膜血管中的血红蛋白氧饱和度(sO(2)),我们建立了一个综合分析模型来描述全血中的光吸收、光散射和血细胞堆积因子,并拟合所获得的 vis-OCT 信号。我们发现动脉血和静脉血的平均 sO(2)值分别为 95%和 72%。