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Type: Journal article
Title: Near video-rate Optical coherence elastography by acceleration with a graphics processing unit
Author: Kirk, R.
Kennedy, B.
Sampson, D.
McLaughlin, R.
Citation: Journal of Lightwave Technology, 2015; 33(16):3481-3485
Publisher: Optical Society and the Institute of Electrical and Electronics Engineers
Issue Date: 2015
ISSN: 0733-8724
Statement of
Rodney W. Kirk, Brendan F. Kennedy, David D. Sampson and Robert A. McLaughlin
Abstract: We present a graphics processing unit (GPU)- accelerated optical coherence elastography (OCE) system capable of generating strain images (elastograms) of soft tissue at near video-rates. The system implements phase-sensitive compression OCE using a pipeline of GPU kernel functions to enable a highly parallel implementation of OCE processing using the OpenCL framework. Developed on a commercial-grade GPU and desktop computer, the system achieves a processing rate of 21 elastograms per second at an image size of 960 × 400 pixels, enabling highrate visualization during acquisition. The system is demonstrated on both tissue-simulating phantoms and fresh ex vivo mouse muscle. To the best of our knowledge, this is the first implementation of near video-rate OCE and the fastest reported OCE processing rate, enabling, for the first time, a system capable of computing and displaying OCE elastograms interactively during acquisition. This advance provides new opportunities for medical imaging of soft tissue stiffness using optical methods.
Keywords: Graphics processing unit (GPU); optical coherence elastography (OCE); optical coherence tomography (OCT); strain
Rights: © 2015 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission.
RMID: 0030050336
DOI: 10.1109/JLT.2015.2413402
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Appears in Collections:Medicine publications

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