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Proceedings Paper

Handheld scanning probes for optical coherence tomography: developments, applications, and perspectives
Author(s): V.-F. Duma; D. Demian; C. Sinescu; R. Cernat; G. Dobre; M. L. Negrutiu; F. I. Topala; Gh. Hutiu; A. Bradu; A. Gh. Podoleanu
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Paper Abstract

We present the handheld scanning probes that we have recently developed in our current project for biomedical imaging in general and for Optical Coherence Tomography (OCT) in particular. OCT is an established, but dynamic imagistic technique based on laser interferometry, which offers micrometer resolutions and millimeters penetration depths. With regard to existing devices, the newly developed handheld probes are simple, light and relatively low cost. Their design is described in detail to allow for the reproduction in any lab, including for educational purposes. Two probes are constructed almost entirely from off-the-shelf components, while a third, final variant is constructed with dedicated components, in an ergonomic design. The handheld probes have uni-dimensional (1D) galvanometer scanners therefore they achieve transversal sections through the biological sample investigated - in contrast to handheld probes equipped with bi-dimensional (2D) scanners that can also achieve volumetric (3D) reconstructions of the samples. These latter handheld probes are therefore also discussed, as well as the possibility to equip them with galvanometer 2D scanners or with Risley prisms. For galvanometer scanners the optimal scanning functions studied in a series of previous works are pointed out; these functions offer a higher temporal efficiency/duty cycle of the scanning process, as well as artifact-free OCT images. The testing of the handheld scanning probes in dental applications is presented, for metal ceramic prosthesis and for teeth.

Paper Details

Date Published: 22 March 2016
PDF: 7 pages
Proc. SPIE 9670, Sixth International Conference on Lasers in Medicine, 96700V (22 March 2016); doi: 10.1117/12.2178590
Show Author Affiliations
V.-F. Duma, Aurel Vlaicu Univ. of Arad (Romania)
Politechnics Univ. of Timisoara (Romania)
Univ. of West Timisoara (Romania)
D. Demian, Aurel Vlaicu Univ. of Arad (Romania)
C. Sinescu, Victor Babes Medicine and Pharmacy Univ. of Timisoara (Romania)
R. Cernat, Univ. of Kent (United Kingdom)
G. Dobre, Univ. of Kent (United Kingdom)
M. L. Negrutiu, Victor Babes Medicine and Pharmacy Univ. of Timisoara (Romania)
F. I. Topala, Victor Babes Medicine and Pharmacy Univ. of Timisoara (Romania)
Gh. Hutiu, Aurel Vlaicu Univ. of Arad (Romania)
A. Bradu, Univ. of Kent (United Kingdom)
A. Gh. Podoleanu, Univ. of Kent (United Kingdom)

Published in SPIE Proceedings Vol. 9670:
Sixth International Conference on Lasers in Medicine
Darinca Carmen Todea; Adrian Gh. Podoleanu; Virgil-Florin Duma, Editor(s)

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