Micro-elasticity (μ-E): CNR and resolution of acoustic radiation force impulse imaging and single- and multiple track location shear wave elasticity imaging for visualizing small targets


Conference Paper

© 2014 IEEE. Acoustic radiation force impulse (ARFI) imaging and shear wave elasticity imaging (SWEI) use the dynamic response of tissue to impulsive mechanical stimulus to characterize local elasticity. A variant of conventional, multiple track location SWEI (MTL-SWEI), denoted single track location SWEI (STL-SWEI) offers the promise of creating speckle-free shear wave images. This work compares the three imaging modalities using a high push and track beam density combined acquisition sequence to image stiff inclusions with diameters of 1.5 and 6 mm. STL-SWEI is shown to have significantly higher CNR than MTL-SWEI, allowing for operation at higher resolution. ARFI and STL-SWEI perform similarly in the 6 mm inclusions, but STL-SWEI images the 1.5 mm targets with the highest CNR and best resolution. The processing trade-offs between CNR and resolution for each modality are discussed.

Full Text

Duke Authors

Cited Authors

  • Hollender, P; Rosenzweig, S; Nightingale, K; Trahey, G

Published Date

  • January 1, 2014

Published In

Start / End Page

  • 703 - 706

Electronic International Standard Serial Number (EISSN)

  • 1948-5727

International Standard Serial Number (ISSN)

  • 1948-5719

International Standard Book Number 13 (ISBN-13)

  • 9781479970490

Digital Object Identifier (DOI)

  • 10.1109/ULTSYM.2014.0173

Citation Source

  • Scopus