Three-dimensional hip cartilage quality assessment of morphology and dGEMRIC by planar maps and automated segmentation C. Siversson, A. Akhondi-Asl,

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Three-dimensional hip cartilage quality assessment of morphology and dGEMRIC by planar maps and automated segmentation C. Siversson, A. Akhondi-Asl, S. Bixby, Y.-J. Kim, S.K. Warfield Osteoarthritis and Cartilage Volume 22, Issue 10, Pages 1511-1515 (October 2014) DOI: 10.1016/j.joca.2014.08.012 Copyright © 2014 Terms and Conditions

Fig. 1 Left and center column show automatically generated planar T1 maps and cartilage morphology maps for four representative cases. Anterior and posterior sides are indicated in the maps by letters A and P. Total acetabular cartilage areas are also shown within the morphology maps. Healthy hip cartilage is typically indicated by T1 values around 500 ms or above, whereas OA is typically indicated by lower T1 values. Right column show segmentation results through the weight-bearing cartilage for the same cases. Blue label represent tissue segmented in common by both manual and automatic methods, red is manual method only and green is automatic method only. Osteoarthritis and Cartilage 2014 22, 1511-1515DOI: (10.1016/j.joca.2014.08.012) Copyright © 2014 Terms and Conditions

Fig. 2 Segmentation accuracy measured by average Dice coefficient as a function of the number of templates used for LS fusion (blue curve, square markers) and MV fusion (red curve, circular markers). (a) segmenting cartilage (b) segmenting femur (c) segmenting acetabulum. Osteoarthritis and Cartilage 2014 22, 1511-1515DOI: (10.1016/j.joca.2014.08.012) Copyright © 2014 Terms and Conditions