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GPU-Based Real-Time Volumetric Ultrasound Image Reconstruction for a Ring Array

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4 Author(s)
Jung Woo Choe ; Edward L. Ginzton Lab., Stanford Univ., Stanford, CA, USA ; Nikoozadeh, A. ; Oralkan, O. ; Khuri-Yakub, B.T.

Synthetic phased array (SPA) beamforming with Hadamard coding and aperture weighting is an optimal option for real-time volumetric imaging with a ring array, a particularly attractive geometry in intracardiac and intravascular applications. However, the imaging frame rate of this method is limited by the immense computational load required in synthetic beamforming. For fast imaging with a ring array, we developed graphics processing unit (GPU)-based, real-time image reconstruction software that exploits massive data-level parallelism in beamforming operations. The GPU-based software reconstructs and displays three cross-sectional images at 45 frames per second (fps). This frame rate is 4.5 times higher than that for our previously-developed multi-core CPU-based software. In an alternative imaging mode, it shows one B-mode image rotating about the axis and its maximum intensity projection, processed at a rate of 104 fps . This paper describes the image reconstruction procedure on the GPU platform and presents the experimental images obtained using this software.

Published in:

Medical Imaging, IEEE Transactions on  (Volume:32 ,  Issue: 7 )

Date of Publication:

July 2013

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