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On the use of envelope and RF signal decorrelation as tissue strain estimators

✍ Scribed by S.Kaisar Alam; J. Ophir

Book ID
104324696
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
665 KB
Volume
23
Category
Article
ISSN
0301-5629

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✦ Synopsis

Bamber and Bush (1995) used the correlation coefficient for freehand elasticity imaging. Varghese and Ophir (1996) found it to be a biased estimator of strain with a large variability. In this study, we systematically investigate the effect of changes in various system and processing parameters on the performance of the correlation coefficient strain estimator, and demonstrate, using simulated data, that noise and frequency-dependent attenuation can introduce variable bias in this estimator.

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