Enhanced Imaging of Choroidal Vasculature by High-penetration and Dual-velocity Optical Coherence Angiography

Overview

Journal Biomed Opt Express

Specialty Radiology

Date 2011 May 12

PMID 21559127

Citations 5

Authors

Franck Jaillon

Shuichi Makita

Eun-Jung Min

Byeong Ha Lee

Yoshiaki Yasuno

Affiliations

Soon will be listed here.

Abstract

Dual-beam-scan Doppler optical coherence angiography (DB-OCA) with a 1-μm-wavelength probe is demonstrated for improved in vivo choroidal angiograms of the human eye. This method utilizes two scanning beams with spatial and temporal separation on the retina, and provides two measurable velocity ranges. The method achieves higher sensitivity to very low velocity flows than conventional Doppler optical coherence tomography. Moreover, longer wavelengths allowing greater penetration, enhanced visualization of choroidal vessels is verified with en-face projection images of the Doppler shift squared. Specifically, better choroidal vasculature visibility is achieved at a wavelength of 1 μm than at 840 nm.

Citing Articles

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Doppler optical coherence tomography.

Leitgeb R, Werkmeister R, Blatter C, Schmetterer L Prog Retin Eye Res. 2014; 41:26-43.

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A pilot quantitative study of topographic correlation between reticular pseudodrusen and the choroidal vasculature using en face optical coherence tomography.

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Optical coherence tomography.

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