Novel spline-based approach for robust strain estimation in elastography.
Ultrason Imaging
; 32(2): 91-102, 2010 Apr.
Article
in En
| MEDLINE
| ID: mdl-20687277
ABSTRACT
Robust strain estimation is important in elastography. However, a high signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) are sometimes attained by sacrificing resolution. We propose a least-squares-based smoothing-spline strain estimator that can produce elastograms with high SNR and CNR without significant loss of resolution. The proposed method improves strain-estimation quality by deemphasing displacements with lower correlation in computing strains. Results from finite-element simulation and phantom-experiment data demonstrate that the described strain estimator provides good SNR and CNR without degrading resolution.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Algorithms
/
Image Processing, Computer-Assisted
/
Elasticity Imaging Techniques
Type of study:
Diagnostic_studies
Language:
En
Journal:
Ultrason Imaging
Year:
2010
Document type:
Article
Affiliation country:
Estados Unidos