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Closed Access item An Ultrasonic Imaging System Based on a New SAFT Approach and a GPU Beamformer

Authors:Martín Arguedas, Carlos J.
Romero-Laorden, David
Martínez Graullera, Oscar
Pérez-López, Manuel
Gómez-Ullate Alvear, Luis
Keywords:GPGPU, SAFT, 2R-SAFT, Real-Time Beamforming
Issue Date:Jul-2012
Publisher:Institute of Electrical and Electronics Engineers
Citation:IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control
Abstract:The design of newer ultrasonic imaging systems attempts to obtain low-cost, small-sized devices with reduced power consumption that are capable of reaching high frame rates with high image quality. In this regard, synthetic aperture techniques have been very useful. They reduce hardware requirements and accelerate information capture. However, the beamforming process is still very slow, limiting the overall speed of the system. Recently, general-purpose computing on graphics processing unit techniques have been proposed as a way to accelerate image composition. They provide excellent computing power with which a very large volume of data can easily and quickly be processed. This paper describes a new system architecture that merges both principles. Thus, using a minimum-redundancy synthetic aperture technique to acquire the signals (2R-SAFT), and a graphics processing unit as a beamformer, we have developed a new scanner with full dynamic focusing, both on emission and reception, that attains real-time imaging with very few resources.
Publisher version (URL):http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6242797
Appears in Collections:(CAEND) Artículos

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