An advanced procedure for Parametric Spectral Analysis (PSA), developed by the authors , 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 language||American English|
|State||Published - 24 Sep 2013|
|Event||Pan American Health Care Exchanges, PAHCE - |
Duration: 24 Sep 2013 → …
|Conference||Pan American Health Care Exchanges, PAHCE|
|Period||24/09/13 → …|
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