Collagen morphology and texture analysis: From statistics to classification

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Abstract

In this study we present an image analysis methodology capable of quantifying morphological changes in tissue collagen fibril organization caused by pathological conditions. Texture analysis based on first-order statistics (FOS) and second-order statistics such as gray level co-occurrence matrix (GLCM) was explored to extract second-harmonic generation (SHG) image features that are associated with the structural and biochemical changes of tissue collagen networks. Based on these extracted quantitative parameters, multi-group classification of SHG images was performed. With combined FOS and GLCM texture values, we achieved reliable classification of SHG collagen images acquired from atherosclerosis arteries with >90% accuracy, sensitivity and specificity. The proposed methodology can be applied to a wide range of conditions involving collagen re-modeling, such as in skin disorders, different types of fibrosis and muscular-skeletal diseases affecting ligaments and cartilage.

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Mostaço-Guidolin, L. B., Ko, A. C. T., Wang, F., Xiang, B., Hewko, M., Tian, G., … Sowa, M. G. (2013). Collagen morphology and texture analysis: From statistics to classification. Scientific Reports, 3. https://doi.org/10.1038/srep02190

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