Single- and multiple-track-location shear wave and acoustic radiation force impulse imaging: matched comparison of contrast, contrast-to-noise ratio and resolution.
Published
Journal Article
Acoustic radiation force impulse 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, denoted single-track-location 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 inclusions of different sizes and contrasts. Single-track-location SWEI is found to have a significantly higher contrast-to-noise ratio than multiple-track-location SWEI, allowing for operation at higher resolution. Acoustic radiation force impulse imaging and single-track-location SWEI perform similarly in the larger inclusions, with single-track-location SWEI providing better visualization of small targets ≤ 2.5 mm in diameter. The processing of each modality introduces different trade-offs between smoothness and resolution of edges and structures; these are discussed in detail.
Full Text
Duke Authors
Cited Authors
- Hollender, PJ; Rosenzweig, SJ; Nightingale, KR; Trahey, GE
Published Date
- April 2015
Published In
Volume / Issue
- 41 / 4
Start / End Page
- 1043 - 1057
PubMed ID
- 25701531
Pubmed Central ID
- 25701531
Electronic International Standard Serial Number (EISSN)
- 1879-291X
International Standard Serial Number (ISSN)
- 0301-5629
Digital Object Identifier (DOI)
- 10.1016/j.ultrasmedbio.2014.11.006
Language
- eng