Eye (London, England) · 2011
Spectral imaging of the retina.
СтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Mordant D J, Al-Abboud I, Muyo G, Gorman A, Sallam A, Ritchie P, Harvey A R, McNaught A I
Аннотация
INTRODUCTION: The work described here involved the use of a modified fundus camera to obtain sequential hyperspectral images of the retina in 14 normal volunteers and in 1 illustrative patient with a retinal vascular occlusion.
METHODS: The paper describes analysis techniques, which allow oximetry within retinal vessels; these results are presented as retinal oximetry maps.
RESULTS: Using spectral images, with wavelengths between 556 and 650 nm, the mean oxygen saturation (OS) value in temporal retinal arterioles in normal volunteers was 104.3 (± 16.7), and in normal temporal retinal venules was 34.8 (± 17.8). These values are comparable to those quoted in the literature, although, the venular saturations are slightly lower than those values found by other authors; explanations are offered for these differences.
DISCUSSION: The described imaging and analysis techniques produce a clinically useful map of retinal oximetric values. The results from normal volunteers and from one illustrative patient are presented. Further developments, including the recent development of a 'snapshot' spectral camera, promises enhanced non-invasive retinal vessel oximetry mapping.
METHODS: The paper describes analysis techniques, which allow oximetry within retinal vessels; these results are presented as retinal oximetry maps.
RESULTS: Using spectral images, with wavelengths between 556 and 650 nm, the mean oxygen saturation (OS) value in temporal retinal arterioles in normal volunteers was 104.3 (± 16.7), and in normal temporal retinal venules was 34.8 (± 17.8). These values are comparable to those quoted in the literature, although, the venular saturations are slightly lower than those values found by other authors; explanations are offered for these differences.
DISCUSSION: The described imaging and analysis techniques produce a clinically useful map of retinal oximetric values. The results from normal volunteers and from one illustrative patient are presented. Further developments, including the recent development of a 'snapshot' spectral camera, promises enhanced non-invasive retinal vessel oximetry mapping.