Master slave en-face OCT/SLO

Bradu, Adrian and Kapinchev, Konstantin and Barnes, Frederick R.M. and Podoleanu, Adrian G.H. (2015) Master slave en-face OCT/SLO. Biomedical Optics Express, 6 (9). p. 3655. ISSN 2156-7085. (doi:https://doi.org/10.1364/BOE.6.003655) (Full text available)

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http://doi.org/10.1364/BOE.6.003655

Abstract

Master Slave optical coherence tomography (MS-OCT) is an OCT method that does not require resampling of data and can be used to deliver en-face images from several depths simultaneously. As the MS-OCT method requires important computational resources, the number of multiple depth en-face images that can be produced in real-time is limited. Here, we demonstrate progress in taking advantage of the parallel processing feature of the MS-OCT technology. Harnessing the capabilities of graphics processing units (GPU)s, information from 384 depth positions is acquired in one raster with real time display of up to 40 en-face OCT images. These exhibit comparable resolution and sensitivity to the images produced using the conventional Fourier domain based method. The GPU facilitates versatile real time selection of parameters, such as the depth positions of the 40 images out of the set of 384 depth locations, as well as their axial resolution. In each updated displayed frame, in parallel with the 40 en-face OCT images, a scanning laser ophthalmoscopy (SLO) lookalike image is presented together with two B-scan OCT images oriented along rectangular directions. The thickness of the SLO lookalike image is dynamically determined by the choice of number of en-face OCT images displayed in the frame and the choice of differential axial distance between them.

Item Type: Article
Subjects: Q Science > QC Physics > QC355 Optics
Q Science > QC Physics > QC411 Interference
Divisions: Faculties > Sciences > School of Physical Sciences > Applied Optics Group
Depositing User: Adrian Bradu
Date Deposited: 31 Aug 2015 23:05 UTC
Last Modified: 18 May 2018 09:18 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50336 (The current URI for this page, for reference purposes)
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