Spatial angular compounding for elastography without the incompressibility assumption.

ABSTRACT: Spatial-angular compounding is a new technique that enables the reduction of noise artifacts in ultrasound elastography. Previous results using spatial angular compounding, however, were based on the use of the tissue incompressibility assumption. Compounded elastograms were obtained from a spatially-weighted average of local strain estimated from radiofrequency echo signals acquired at different insonification angles. In this paper, we present a new method for reducing the noise artifacts in the axial strain elastogram utilizing a least-squares approach on the angular displacement estimates that does not use the incompressibility assumption. This method produces axial strain elastograms with higher image quality, compared to noncompounded axial strain elastograms, and is referred to as th

SUBMITTER: Rao M 

PROVIDER: S-EPMC1994653 | biostudies-literature | 2005 Oct

REPOSITORIES: biostudies-literature