Motorized capsule for shadow-free OCT imaging and synchronous beam control

Journal article (2019)

Authors

Geert Springeling Erasmus MC
Robert Beurskens Erasmus MC
A.F.W. van der Steen , Chinese Academy of Sciences, Erasmus MC
Arjun D. Koch Erasmus MC
Brett E. Bouma Harvard Medical School
Robert Huber University of Lübeck
Gijs Van Soest Erasmus MC
Tianshi Wang Erasmus MC
Copyright: © 2019 Antonio López-Marín, Geert Springeling, Robert Beurskens, Heleen van Beusekom, A.F.W. van der Steen, Arjun D. Koch, Brett E. Bouma, Robert Huber, Gijs V.A.N. Soest, Tianshi Wang
DOI: https://doi.org/10.1364/OL.44.003641
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Published Date

2019

Language

English

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Abstract

We demonstrate a tethered motorized capsule for unobstructed optical coherence tomography (OCT) imaging of the esophagus. By using a distal reflector design, we avoided the common shadow artifact induced by the motor wires. A synchronous driving technique features three types of beam-scanning modes of the capsule, i.e., circumferential beam scanning, localized beam scanning, and accurate beam positioning. We characterized these three modes and carried out ex vivo imaging experiments using the capsule. The results show that the capsule can potentially be a useful tool for diagnostic OCT imaging and OCT-guided biopsy and therapy of the esophagus.

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