Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration
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Friemel, BH; Bohs, LN; McDermott, BA; Trahey, GE
Published in: Proceedings - IEEE Ultrasonics Symposium
January 1, 1992
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.
Duke Scholars
Published In
Proceedings - IEEE Ultrasonics Symposium
DOI
ISSN
1051-0117
Publication Date
January 1, 1992
Volume
1992-October
Start / End Page
1179 / 1182
Citation
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Friemel, B. H., Bohs, L. N., McDermott, B. A., & Trahey, G. E. (1992). Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration. In Proceedings - IEEE Ultrasonics Symposium (Vol. 1992-October, pp. 1179–1182). https://doi.org/10.1109/ULTSYM.1992.275890
Friemel, B. H., L. N. Bohs, B. A. McDermott, and G. E. Trahey. “Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration.” In Proceedings - IEEE Ultrasonics Symposium, 1992-October:1179–82, 1992. https://doi.org/10.1109/ULTSYM.1992.275890.
Friemel BH, Bohs LN, McDermott BA, Trahey GE. Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration. In: Proceedings - IEEE Ultrasonics Symposium. 1992. p. 1179–82.
Friemel, B. H., et al. “Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration.” Proceedings - IEEE Ultrasonics Symposium, vol. 1992-October, 1992, pp. 1179–82. Scopus, doi:10.1109/ULTSYM.1992.275890.
Friemel BH, Bohs LN, McDermott BA, Trahey GE. Initial results with the real-time SAD vector velocity estimation system: Constant velocity calibration. Proceedings - IEEE Ultrasonics Symposium. 1992. p. 1179–1182.
Published In
Proceedings - IEEE Ultrasonics Symposium
DOI
ISSN
1051-0117
Publication Date
January 1, 1992
Volume
1992-October
Start / End Page
1179 / 1182