Ultrasound Echo Evaluation by K-Distribution

Document Type

Conference Proceeding



Format of Original

4 p.

Publication Date



Institute of Electrical and Electronics Engineers (IEEE)

Source Publication

IEEE Ultrasonics Symposium, 1993. Proceedings, October 31 - November 3, 1993, Baltimore, MD

Source ISSN


Original Item ID

DOI: 10.1109/ULTSYM.1993.339649


The ultrasonic echo backscattered from tissues is modeled using non-Rayleigh statistics, namely the K distribution. Through simulation using a one dimensional discrete scattering model, the properties of statistics governing the echo envelope are investigated. Deviations from Rayleigh are observed as the variation in the scattering cross sections become random. The density function of the backscattered envelope fits the K-distribution very well. The validity of the model was also tested using tissue mimicking phantoms. Results indicate that the parameters of the K distribution can be used to separate and identify regions on the basis of the uniformity of scattering cross sections of the scatterers


Published as part of the proceedings of the conference Ultrasonics Symposium, 1993. Proceedings., IEEE 1993: 957 - 960 vol.2. DOI.

Robert C. Molthen was affiliated with Drexel University at the time of publication.