On modeling biomedical ultrasound RF echoes using a power-law shot-noise model

M. Alper Kutay, Athina P. Petropulu, Catherine W. Piccoli

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

We propose a new model for the RF ultrasound echo, namely the power-law shot-noise process. Based on this model, the in-phase and quadrature components of the echo are shown to exhibit 1/fβ-type spectral behavior, in a sense that is define in the paper. The envelope also exhibits this type of spectral behavior, but with a different exponent. This result explains the experimental observations by other researchers of the power-law trend of the RF echo spectrum. Although the shot-noise model has been used in the past for modeling the RF echo, this is the first time that a power-law impulse response filter is used and that the resulting 1/fβ-type spectral behavior of the RF echo has been investigated. The model parameters are linked to tissue characteristics, such as scatterer density and attenuation; thus, they have the potential to be used as tissue characterization features. The validity of the proposed model is tested based on a database of 100 clinical ultrasound images of the breast.

Original languageEnglish (US)
Pages (from-to)953-968
Number of pages16
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume48
Issue number4
DOIs
StatePublished - Jul 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Acoustics and Ultrasonics
  • Electrical and Electronic Engineering

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