Analysis of spectral variations hidden in ultrasonic echoes acquired from healthy and sick liver of Wistar rats

I. Bazan, L. Favari, M. Shibayama, A. Ramirez, T. E. Gomez, A. Ramos, M. T. Garcia, J. Cruz-Prieto

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Abstract

An advanced procedure for Parametric Spectral Analysis (PSA), developed by the authors [1], was applied to three groups of ultrasonic echo-signals acquired from liver tissue of Wistar rats. Each group consisted on multi-echo signals acquired from 5 specimens. The first group of signals was acquired from liver of 5 healthy rats, selected as a control group; the second and third groups were acquired from liver of rats with experimental hepatitis induced by carbon tetrachloride (CCl4) at 5 and 24 hours before liver extraction respectively. The fundamental frequencies associated with the initial regular structures [2, 3] of the tissue were obtained and changes on the Power Spectral Densities were estimated from the three different groups. A displacement of the fundamental frequency estimation was encountered between control and other two groups with induced hepatitis, related probably with inflammation or tissue damage. © 2013 IEEE.
Original languageAmerican English
DOIs
StatePublished - 24 Sep 2013
Externally publishedYes
EventPan American Health Care Exchanges, PAHCE -
Duration: 24 Sep 2013 → …

Conference

ConferencePan American Health Care Exchanges, PAHCE
Period24/09/13 → …

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Bazan, I., Favari, L., Shibayama, M., Ramirez, A., Gomez, T. E., Ramos, A., Garcia, M. T., & Cruz-Prieto, J. (2013). Analysis of spectral variations hidden in ultrasonic echoes acquired from healthy and sick liver of Wistar rats. Paper presented at Pan American Health Care Exchanges, PAHCE, . https://doi.org/10.1109/PAHCE.2013.6568354