title: Graphics processing unit accelerated optical coherence tomography processing at megahertz axial scan rate and high resolution video rate volumetric rendering.
abstract: In this report, we describe how to highly optimize a computer unified device architecture based platform to perform real-time processing of optical coherence tomography interferometric data and three-dimensional (3-D) volumetric rendering using a commercially available, cost-effective, graphics processing unit (GPU). The maximum complete attainable axial scan processing rate, including memory transfer and displaying B-scan frame, was 2.24 MHz for 16 bits pixel depth and 2048 fast Fourier transform size; the maximum 3-D volumetric rendering rate, including B-scan, en face view display, and 3-D rendering, was ~23 volumes/second (volume size: 1024×256×200). To the best of our knowledge, this is the fastest processing rate reported to date with a single-chip GPU and the first implementation of real-time video-rate volumetric optical coherence tomography (OCT) processing and rendering that is capable of matching the acquisition rates of ultrahigh-speed OCT.
authors: Simon Fraser University, School of Engineering Science, Burnaby, BC V5A 1S6, Canada.
authors: Yifan
authors: Y
authors: Jian
authors: Kevin
authors: K
authors: Wong
authors: Marinko V
authors: MV
authors: Sarunic
mesh_terms: D003196:Computer Graphics; D005583:Fourier Analysis; D006801:Humans; D021621:Imaging, Three-Dimensional; D055620:Optical Phenomena; D012160:Retina / Q000033:anatomy & histology; D041623:Tomography, Optical Coherence / Q000706:statistics & numerical data*; D014741:Video Recording