An Adaptive Pulse Compression Filter for Ultrasound Contrast Harmonic ImagingReport as inadecuate




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Coded excitation is useful for ultrasound contrastimaging to increase penetration and SNR, and improve the contrast to tissueratio CTR. The waveform of bubble response depends greatly on bubble size,the frequency and bandwidth of the excitation chirp signal. This makes thepulse compression filter based on square-law be wrong for bubbles with changingsizes. In this paper, an adaptive pulse compression APC filter for the secondharmonic of microbubble with varying size distribution is proposed. The APCfilter is designed based on the estimated power spectrum of the received bubbleharmonic echoes. Theoretical analysis and simulation studies are presented forevaluating performance of the APC filter. For monodisperse bubble, the powerimprovement factor of the APC filter can be more than 20 dB.



KEYWORDS

Ultrasound Contrast Imaging; Square Law Pulse Compression; Adaptive Pulse Compression

Cite this paper

Tsao, J. and Chen, M. 2013 An Adaptive Pulse Compression Filter for Ultrasound Contrast Harmonic Imaging. Engineering, 5, 118-122. doi: 10.4236-eng.2013.510B024.





Author: Jenho Tsao, Ming-Huang Chen

Source: http://www.scirp.org/



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