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Biomed Opt Express. 2013 Jun 24;4(7):1188-203. doi: 10.1364/BOE.4.001188. Print 2013 Jul 1.

Dove prism based rotating dual beam bidirectional Doppler OCT.

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Center of Medical Physics and Biomedical Engineering, Medical University Vienna, Waehringer Guertel 18-20, 1090 Vienna, Austria.


Traditional Doppler OCT is highly sensitive to motion artifacts due to the dependence on the Doppler angle. This limits its accuracy in clinical practice. To overcome this limitation, we use a bidirectional dual beam technique equipped with a novel rotating scanning scheme employing a Dove prism. The volume is probed from two distinct illumination directions with variable controlled incidence plane, allowing for reconstruction of the true flow velocity at arbitrary vessel orientations. The principle is implemented with Swept Source OCT at 1060nm with 100,000 A-Scans/s. We apply the system to resolve pulsatile retinal absolute blood velocity by performing segment scans around the optic nerve head and circumpapillary scan time series.


(110.4500) Optical coherence tomography; (170.2655) Functional monitoring and imaging; (170.4500) Optical coherence tomography; (280.2490) Flow diagnostics

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