Time-sharing bilinear delay interpolation for ultrasound dynamic receive beamformer

Author

Sohn, H.-Y. ; Kang, Jiawen ; Cho, Jeon-Wook ; Song, T.-K. ; Yoo, Yoonjong

Author_Institution

Dept. of Electron. Eng., Sogang Univ., Seoul, South Korea

Volume

47

Issue

2

fYear

2011

fDate

1/1/2011 12:00:00 AM

Firstpage

89

Lastpage

91

Abstract

In ultrasound dynamic receive beamforming, focusing delays need to be updated for individual focal points, leading to increased hardware complexity. Proposed is a new efficient delay calculation method based on time-sharing bilinear delay interpolation (TS-BDI) to reduce both hardware complexity and focusing delay errors for portable ultrasound systems. The TS-BDI provides 2.5 dB improvement in the signal-to-noise ratio compared to the TS-LDI (linear delay interpolation). In addition, the proposed TS-BDI lowers the hardware complexity in the 64-channel digital dynamic receive beamformer compared to the conventional method, i.e. 36.0 reduction in equivalent gate counts. These results indicate that the proposed TS-BDI method could provide better accuracy in focusing delay calculation with reduced hardware complexity for portable ultrasound systems.

Keywords

array signal processing; biomedical ultrasonics; interpolation; ultrasonic focusing; ultrasonic imaging; TS-BDI; delay calculation method; digital dynamic receive beamformer; equivalent gate counts; focal points; focusing delay errors; focusing delays; hardware complexity; portable ultrasound systems; signal-to-noise ratio; time-sharing bilinear delay interpolation; ultrasound dynamic receive beamformer; ultrasound dynamic receive beamforming;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2010.2024

Filename

5699989