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Abstract #0580

Gray level co-occurrence matrix approach for T2 analysis of cartilage in knee osteoarthritis

Arttu Peuna 1 , Joonas Hekkala 2 , Marianne Haapea 3 , Jana Podlipska 1,2 , Miika T Nieminen 1,3 , Simo Saarakkala 2,3 , and Eveliina Lammentausta 1,3

1 Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland, 2 Department of Medical Technology, University of Oulu, Oulu, Finland, 3 Department of Diagnostic Radiology, Oulu University Hospital, Oulu, Finland

Gray level co-occurrence matrix texture analysis is an effective way to analyze relaxation time maps. Parameters such as entropy and contrast can be used to depict the spatial structure of data. In this study, texture parameters were calculated from T2 maps of asymptomatic and osteoarthritic subjects using a rotating reference orientation, based on the natural curvature of the articular surface. Texture analysis showed significant differences between groups even when compartmental mean T2 values were unable to differentiate the groups. GLCM analysis of T2 maps can provide complementary information on early cartilage changes in knee OA.

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