Chir p-Coded Pulse Excitation for Ultrasound Elasticity Imaging
We first designed two chirp-coded excitation/compression schemes which were applied to ultrasound elasticityimaging in simulation method using Field II. The simulationresults demonstrate that in low echo-signal-to-noise ratio (eSNR)conditions, the performance of chirp-coded pulse for elasticityimaging is much better than the conventional short pulse, andindicate that elastographic signal-to-noise ratio (SNRe) of strainimages for chirp-coded pulse is a function of attenuation,electronic noise, applied strain, pulse length, compression filterand depth. Comparing the effects of two chirp-codedexcitation/compression schemes on strain imaging, wedemonstrate that under the conditions of low eSNR, the firstscheme, the combination of chirp excitation pulse with windowand matched compression filter, is suitable to be used in lowattenuation situations, and the second scheme, the combinationof chirp excitation pulse without window and mismatchedcompression filter, is fit to be used in high attenuation situations.Finally, we applied the second chirp-coded scheme to a real-timefreehand ultrasound strain imaging system and phantomexperimental results are consistent with that in simulationmethod.
Hui Peng Dong C.Liu
College of Computer Science, Sichuan University, Chengdu, China College of Software Engineering, Che College of Computer Science, Sichuan University, Chengdu, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）