Physical factors affecting the performance of two-dimensional vector flow imaging


Conference Paper

© 1992 IEEE. We have previously proposed a two-dimensional correlation technique capable of measuring target velocities in any direction in the imaging plane and related its performance to the fundamental characteristics of speckle size and speckle decorrelation rates [1]. In this paper we relate the inaccuracy in the measurements to system parameters such as signal-to-noise ratios, correlation coefficients and spatial frequencies and explain how factors such as pulse bandwidth, stationary noise and focal errors can introduce errors in the measurements. We discuss the effect of the anisotropic nature of speckle in the axial and lateral dimensions on the magnitude of errors in the two dimensions.

Full Text

Duke Authors

Cited Authors

  • Ramamurthy, BS; Trahey, GE

Published Date

  • January 1, 1992

Published In

Volume / Issue

  • 1992-October /

Start / End Page

  • 1227 - 1230

International Standard Serial Number (ISSN)

  • 1051-0117

International Standard Book Number 10 (ISBN-10)

  • 0780305620

Digital Object Identifier (DOI)

  • 10.1109/ULTSYM.1992.275857

Citation Source

  • Scopus