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Vol. 168, Issue 4, April 2014, pp. 237-242

 

Bullet

 

Compact Beamformer Design with High Frame Rate for Ultrasound Imaging
 

Jun Luo, Qijun Huang, Sheng Chang, Xiaoying Song, Hao Wang

Wuhan University, Department of Electronic Science and Technology, School of Physics and Technology, Wuhan University,
16 Luojia Mountain Road, Wuhan, 430072, China
Tel.: +86-13207147038, fax: +86-027-68752569

E-mail: jluo@whu.edu.cn, huangqj@whu.edu.cn

 

Received: 29 September 2013 /Accepted: 7 March 2014 /Published: 30 April 2014

Digital Sensors and Sensor Sysstems

 

Abstract: In medical field, two-dimension ultrasound images are widely used in clinical diagnosis. Beamformer is critical in determining the complexity and performance of an ultrasound imaging system. Different from traditional means implemented with separated chips, a compact beamformer with 64 effective channels in a single moderate Field Programmable Gate Array has been presented in this paper. The compactness is acquired by employing receive synthetic aperture, harmonic imaging, time sharing and linear interpolation. Besides that, multi-beams method is used to improve the frame rate of the ultrasound imaging system. Online dynamic configuration is employed to expand system’s flexibility to two kinds of transducers with multi-scanning modes. The design is verified on a prototype scanner board. Simulation results have shown that on-chip memories can be saved and the frame rate can be improved on the case of 64 effective channels which will meet the requirement of real-time application.

 

Keywords: Ultrasound, Time-of-flight, Beamformer, Synthetic aperture, FPGA.

 

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