Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration


Conference Paper

© 1992 IEEE. Doppler flow imaging systems are limited by angledependence and aliasing. We have constructed a velocity estimator which uses the Sum Absolute Difference (SAD) algorithm [1] to track the motion of speckle in two dimensions between successive ultrasonic frames. In this study we evaluate the system's performance in quantifying velocities of a string phantom moving at various angles relative to the transducer axis. The results show that the system is capable of tracking velocities weU beyond the Doppler aliasing limit along any direction within the imaging plane.

Full Text

Duke Authors

Cited Authors

  • Friemel, BH; Bohs, LN; McDermott, BA; Trahey, GE

Published Date

  • January 1, 1992

Published In

Volume / Issue

  • 1992-October /

Start / End Page

  • 1179 - 1182

International Standard Serial Number (ISSN)

  • 1051-0117

International Standard Book Number 10 (ISBN-10)

  • 0780305620

Digital Object Identifier (DOI)

  • 10.1109/ULTSYM.1992.275890

Citation Source

  • Scopus