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Compressed sensing-enabled phase-sensitive swept-source optical coherence tomography
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DOI：10.1364/OE.27.000855.png)
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Abstract
En 中文
Here we present a novel phase-sensitive swept-source optical coherence tomography (PhS-SS-OCT) system. The simultaneously recorded calibration signal, which is commonly used in SS-OCT to stabilize the phase, is randomly sub-sampled during the acquisition, and it is later reconstructed based on the Compressed Sensing (CS) theory. We first mathematically investigated the method, and verified it through computer simulations. We then conducted a vibrational frequency test and a flow velocity measurement in phantoms to demonstrate the system's capability of handling phase-sensitive tasks. The proposed scheme shows excellent phase stability with greatly discounted data bandwidth compared with conventional procedures. We further showcased the usefulness of the system in biological samples by detecting the blood flow in ex vivo swine left marginal artery. The proposed system is compatible with most of the existing SS-OCT systems and could be a preferred solution for future high-speed phase-sensitive applications. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Keywords:
UNCERTAINTY PRINCIPLES
VASCULAR PERFUSION
ANTERIOR SEGMENT
BLOOD-FLOW
SOURCE OCT
200 KHZ
SPEED
EYE
ELASTOGRAPHY
Journal
IF:
3.3
Papers:
6.1W
Citations:
14.3W
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