Dove prism based rotating dual beam bidirectional Doppler OCT

Cedric Blatter; Séverine Coquoz; Branislav Grajciar; Amardeep S.G. Singh; Marco Bonesi; René M. Werkmeister; Leopold Schmetterer; Rainer A. Leitgeb

doi:10.1364/BOE.4.001188

Dove prism based rotating dual beam bidirectional Doppler OCT

Cedric Blatter, Séverine Coquoz, Branislav Grajciar, Amardeep S.G. Singh, Marco Bonesi, René M. Werkmeister, Leopold Schmetterer, Rainer A. Leitgeb^*

^*Corresponding author for this work

Medical University of Vienna

Research output: Contribution to journal › Article › peer-review

39 Citations (Scopus)

Abstract

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.

Original language	English
Article number	A1188
Pages (from-to)	1188-1203
Number of pages	16
Journal	Biomedical Optics Express
Volume	4
Issue number	7
DOIs	https://doi.org/10.1364/BOE.4.001188
Publication status	Published - 2013
Externally published	Yes

Bibliographical note

Publisher Copyright:
©2013 Optical Society of America.

ASJC Scopus Subject Areas

Biotechnology
Atomic and Molecular Physics, and Optics

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10.1364/BOE.4.001188

Cite this

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AU - Blatter, Cedric

AU - Coquoz, Séverine

AU - Grajciar, Branislav

AU - Singh, Amardeep S.G.

AU - Bonesi, Marco

AU - Werkmeister, René M.

AU - Schmetterer, Leopold

AU - Leitgeb, Rainer A.

PY - 2013

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AB - 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.

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Dove prism based rotating dual beam bidirectional Doppler OCT

Abstract

Bibliographical note

ASJC Scopus Subject Areas

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