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1 February 2013 Quantitative evaluation of skeletal muscle defects in second harmonic generation images
Wenhua Liu, Evelyn Ralston, Nina Raben
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Journal of Biomedical Optics, Vol. 18, Issue 2, 026005 (February 2013). https://doi.org/10.1117/1.JBO.18.2.026005
Abstract
Skeletal muscle pathologies cause irregularities in the normally periodic organization of the myofibrils. Objective grading of muscle morphology is necessary to assess muscle health, compare biopsies, and evaluate treatments and the evolution of disease. To facilitate such quantitation, we have developed a fast, sensitive, automatic imaging analysis software. It detects major and minor morphological changes by combining texture features and Fourier transform (FT) techniques. We apply this tool to second harmonic generation (SHG) images of muscle fibers which visualize the repeating myosin bands. Texture features are then calculated by using a Haralick gray-level cooccurrence matrix in MATLAB. Two scores are retrieved from the texture correlation plot by using FT and curve-fitting methods. The sensitivity of the technique was tested on SHG images of human adult and infant muscle biopsies and of mouse muscle samples. The scores are strongly correlated to muscle fiber condition. We named the software MARS (muscle assessment and rating scores). It is executed automatically and is highly sensitive even to subtle defects. We propose MARS as a powerful and unbiased tool to assess muscle health.
© The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Wenhua Liu, Evelyn Ralston, and Nina Raben "Quantitative evaluation of skeletal muscle defects in second harmonic generation images," Journal of Biomedical Optics 18(2), 026005 (1 February 2013). https://doi.org/10.1117/1.JBO.18.2.026005
Published: 1 February 2013
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KEYWORDS
Optical fibers
Mars
Second-harmonic generation
Biopsy
Zoom lenses
Fourier transforms
Image processing
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