A pipelined beamforming delay calculation architecture in ultrasound imaging system

Author

Zhao, Zhanxiang ; Xiang, Tian ; Gao, Ming ; He, Chenghao ; Zhang, Xin ; Jin, Xi

Author_Institution

Dept. of Phys., Univ. of Sci. & Technol. of China, Hefei, China

Volume

1

fYear

2011

fDate

10-12 June 2011

Firstpage

162

Lastpage

166

Abstract

In the beamformers of modern digital ultrasound imaging system, to avoid storing amount of precalculated parameters, real time delay calculation has to be used. This paper describes the design and implementation of a calculator of beamforming delay parameters, which based on pipelined Coordinate Rotation Digital Computer (CORDIC) architecture and 2-level carry look ahead (CLA) adder. High computational speed is achieved while computational logic is saved. The calculator is used in a 128-channel ultrasound system with sampling frequency of 40 MHz and beamforming delay update rate of 10 MHz. Being synthesized for a Virtex-5 XC5VLX110T FPGA, the maximum clock frequency is 351.494MHz, and only 8 calculators are needed in two-receive-beam system.

Keywords

adders; array signal processing; biomedical ultrasonics; carry logic; field programmable gate arrays; medical image processing; pipeline arithmetic; real-time systems; signal sampling; 128-channel ultrasound system; 2-level carry look ahead adder; CLA adder; CORDIC architecture; Virtex-5 XC5VLX110T FPGA; beamforming delay parameters; beamforming delay update rate; computational logic; computational speed; maximum clock frequency; modern digital ultrasound imaging system; pipelined beamforming delay calculation architecture; pipelined coordinate rotation digital computer architecture; precalculated parameters; real time delay calculation; sampling frequency; two-receive-beam system; Array signal processing; Calculators; Computer architecture; Delay; Field programmable gate arrays; Imaging; Ultrasonic imaging; CLA; CORDIC; beamforming; delay calculation; ultrasound;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science and Automation Engineering (CSAE), 2011 IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-8727-1

Type

conf

DOI

10.1109/CSAE.2011.5953195

Filename

5953195