Noninvasive Vascular Elastography With Plane Strain Incompressibility Assumption Using Ultrafast Coherent Compound Plane Wave Imaging

PROJECT TITLE :

Noninvasive Vascular Elastography With Plane Strain Incompressibility Assumption Using Ultrafast Coherent Compound Plane Wave Imaging

ABSTRACT:

Plane strain tensor estimation using non-invasive vascular ultrasound elastography (NIVE) will be tough to realize using typical focus beamforming due to restricted lateral resolution and frame rate. Recent developments in compound plane wave (CPW) imaging have led to high speed and high resolution imaging. During this study, we gift the performance of NIVE using coherent CPW. We tend to show the impact of CPW beamforming on strain estimates compared to standard focus sequences. To beat the inherent variability of lateral strains, associated with the low lateral resolution of linear array transducers, we have a tendency to use the plane strain incompressibility to constrain the estimator. Taking advantage of the approximate tenfold increase in frame rate of CPW compared with typical focus imaging, we have a tendency to introduce a time-ensemble estimation approach to more improve the elastogram quality. By combining CPW imaging with the constrained Lagrangian speckle model estimator, we have a tendency to observe an increase in elastography quality ($sim$ten dB both in signal-to-noise and distinction-to-noise ratios) over a big selection of applied strains (0.02 to 3.twop.c).

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