Characterization of ultrasonic B-scans using non-rayleigh statistics

✍ Scribed by R.C. Molthen; P.M. Shankar; J.M. Reid

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 927 KB
• Volume: 21
• Category: Article
• ISSN: 0301-5629
• DOI: 10.1016/s0301-5629(94)00105-7

✦ Synopsis

Tbe envelope of tbe ultrasonic echo backscattered from tissues is modeled using non-Rayleigh statistics, namely the K-distribution.

We show that the K-distribution can be used to descrlbe the envelope of the echo, and its parameters may be used to distinguish between dilferent reglons in ultrasonic B-scan images. The valid@ of the model is tested using phantoms. Preliminary results indicate that the parameters of the K-distrlbution may be used to separate targets, in which the number of scatterers or the scattering cross-sections dlffer from that of the background.

The method of employing the parameters of the Kdlstribution appears to be better than the methods based solely on the signal-to-noise ratio.