Reduction of the Decorrelation Effect Due to Tissue Lateral Displacement by 2-D Spatial Comprehensive Correlation in Elastography

Abstract

The cross-correlation based ultrasonic elastography is limited for application due to distortion of the echo waveform by tissue lateral deformation during axial compression. To reduce this kind of decorrelation effect, a time-efficient method called 2-D Spatial Comprehensive Correlation algorithm is proposed in this article. The basic idea of this method is to combine spatial adjacent cross-correlation functions as a comprehensive time shift estimator. Simulation model based on finite element analysis is applied to evaluate the method proposed in this work. Results indicate that this method can reduce the decorrelation effect of tissue lateral displacement with less increase of computation.

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Document Details

Document Type
Technical Report
Publication Date
Oct 25, 2001
Accession Number
ADA409469

Entities

People

  • Chuxiong Ding
  • Jing Bai

Organizations

  • Tsinghua University

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Abstracts
  • Algorithms
  • Biology
  • Biomedical Engineering
  • Classification
  • Computations
  • Cross Correlation
  • Displacement
  • Electrical Engineering
  • Engineering
  • Estimators
  • Finite Element Analysis
  • Military Research
  • Statistical Algorithms
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Medical Imaging.
  • Systems Analysis and Design