Acoustical Imaging pp 365-370 | Cite as
Tissue Characterization by Imaging of Acoustical Parameters
Abstract
The main objective of the work of our group is to assist the diagnosis by ultrasonic imaging of cancer in human testis. For this we use a modern b-mode-device (ATL-HDI 9). In addition to the b-mode-image we estimate mean acoustic parameters like attenuation and backscattering by applying the technique of spectral analysis. Normally we find a higher attenuation in cancerous tissue. However the estimation of attenuation becomes difficult for small inhomogeneous areas in the image. So we use a greater region of interest to calculate mean values for the parameters. After a correction according to this values we are able to synthesize a new image what especially shows local deviations from the characteristics of the surrounding tissue.
Keywords
Acoustical Parameter Tissue Characterization Human Testis Ultrasonic Power Focal ZonePreview
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References
- Boote, E.J., Hall, T.J., Madsen, E.L., and Zagzebski, J.A.,1991, “Improved resolution backscatter coefficient imaging”, Ultrasonic Imaging, 13, 347–359Google Scholar
- Boote, E.J., Zagzebski, J.A., and Madsen, E.L., 1992, “Backscatter coefficient imaging using a clinical scanner”, Med. Phys., 19, 1145–1152Google Scholar
- Parker, K.J., Lerner, R.M., and Waag, R.C, 1988, “Comparison of techniques for in vivo attenuation measurements”, IEEE Trans, on Biomed. Eng., 35, 12, 1064–1068Google Scholar
- Walach, E., Shmulewitz, A., Itzchak, Y., and Heyman, Z., 1989, “Local tissue attenuation images based on pulsed-echo ultrasound scans”, IEEE Trans, on Biomed. Eng., 36, 2, 211–221Google Scholar
- Wear, K.A., Wagner, R.F., Insana, M.F., and Hall, T.J., 1993, “Application of autoregressive spectral analysis to cepstral estimation of mean scatterer spacing”, IEEE Trans, on Ultr., Ferro. and Frequ. Control, 40, 1,50–58Google Scholar
- Yao, L.X., Zagzebski, J.A., Madsen, E.L., 1991, “Statistical uncertainty in ultrasonic backscatter and attenuation coefficients determined with a reference phantom”, Ultrasound in Med. 6 Biol., 17, 2, 187–194Google Scholar