Master/slave optical coherence tomography imaging of eyelid basal cell carcinoma

Chin, Catherine and Bradu, Adrian and Lim, Rongxuan and Khandwala, Mona and Schofield, John and Leick, Lasse and Podoleanu, Adrian G.H. (2016) Master/slave optical coherence tomography imaging of eyelid basal cell carcinoma. Applied Optics, 55 (26). pp. 7378-7386. ISSN 1559-128X. E-ISSN 2155-3165. (doi:https://doi.org/10.1364/AO.55.007378) (Full text available)

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Abstract

Optical coherence tomography (OCT) is fast emerging as an additional non-interventional modality for skin tumor detection and diagnosis. A master/slave flying spot OCT configuration was assembled to detect periocular basal cell carcinomas (BCC). A swept source at 1300 nm and sweeping speed of 50 kHz were used. A three-step process was involved. First, 384 channeled spectra using a mirror were stored for 384 optical path differences at the master stage. Then, the stored channeled spectra (masks) were correlated with the channeled spectrum from the BCC tissue to produce 384 en face OCT images (200×200200×200 pixels) for the optical path difference values used to acquire the masks. Finally, these en face slices were stacked to form a volume to cross-reference BCC tumor margins in the orthogonal plane. Per each eyelid sample, several en face images of 200×200200×200 lateral pixels are produced in the time to scan laterally a complete raster of 1.6 s. Combination of the en face views with the cross-sectioning views allow for better discrimination of BCCs comparable to using cross-sectional imaging alone, as previously reported using the conventional fast-Fourier-transform-based OCT techniques.

Item Type: Article
Projects: Projects 607627 not found.
Projects 249889 not found.
Uncontrolled keywords: Optical coherence tomography; Imaging systems.
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC355 Optics
Q Science > QC Physics > QC411 Interference
R Medicine > RL Dermatology
R Medicine > RZ Other systems of medicine
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: C.C. Chin
Date Deposited: 21 Sep 2016 08:43 UTC
Last Modified: 08 Sep 2017 23:00 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/57409 (The current URI for this page, for reference purposes)
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