A Noncontact, Nondestructive Method for Quantifying Intratissue Deformations and Strains

Author:

Bey M. J.1,Song and H. K.2,Wehrli F. W.2,Soslowsky L. J.3

Affiliation:

1. Department of Biomedical Engineering, University of Cincinnati, 840 Engineering Research Center, Cincinnati, OH 45221

2. Department of Radiology, University of Pennsylvania, 1 Silverstein/MRI, 3400 Spruce Street, Philadelphia, PA 19104

3. McKay Orthopaedic Research Laboratory, University of Pennsylvania, 424 Stemmler Hall, Philadelphia, PA 19104

Abstract

Abstract The function of soft connective tissues is frequently characterized by quantifying tissue strain (e.g., during joint motion). Conventional techniques for quantifying tendon and ligament strain typically provide surface measures, using markers, stain lines or instrumentation that may influence the tissue. An alternative approach is to quantify intratendinous strain by applying texture correlation analysis to magnetic resonance (MR) images. This paper reports the accuracy and reproducibility of this approach by (1) assessing the reproducibility of MR images, (2) assessing texture correlation accuracy using simulated displacements, and (3) comparing texture correlation measures of displacement and strain from MR images to conventional techniques.

Publisher

ASME International

Subject

Physiology (medical),Biomedical Engineering

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