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Evaluation of cartilage matrix disorders by T2 relaxation time in patients with hip dysplasia  T. Nishii, M.D., H. Tanaka, M.D., N. Sugano, M.D., T. Sakai,

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Presentation on theme: "Evaluation of cartilage matrix disorders by T2 relaxation time in patients with hip dysplasia  T. Nishii, M.D., H. Tanaka, M.D., N. Sugano, M.D., T. Sakai,"— Presentation transcript:

1 Evaluation of cartilage matrix disorders by T2 relaxation time in patients with hip dysplasia 
T. Nishii, M.D., H. Tanaka, M.D., N. Sugano, M.D., T. Sakai, M.D., T. Hananouchi, M.D., H. Yoshikawa, M.D.  Osteoarthritis and Cartilage  Volume 16, Issue 2, Pages (February 2008) DOI: /j.joca Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

2 Fig. 1 Representative mid-sagittal MR images of a normal volunteer hip (a: 1500/10ms, b: 1500/45ms), and corresponding T2 map overlaid on the cartilage region (c). Superior and anterior directions of the hip are toward the top and left of each image, respectively. Osteoarthritis and Cartilage  , DOI: ( /j.joca ) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

3 Fig. 2 Representative cases for the three patterns in visual appearance of T2 mapping (upper image) and their magnified images of the weight-bearing area with segmentation of the ROIs in the acetabular and femoral cartilages (lower image). Note T2 distribution within the ROIs of the acetabular cartilage (arrows). Gradient T2 pattern shows low T2 at the deep cartilage area and high T2 values at the superficial cartilage area; low T2 pattern shows predominantly low T2; and high T2 pattern shows predominantly high T2. Osteoarthritis and Cartilage  , DOI: ( /j.joca ) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions

4 Fig. 3 Distribution of gradient T2 pattern, low T2 pattern and high T2 pattern in the normal, pre-arthritic, and early-arthritic groups, for the acetabular ROIs and femoral ROIs. Osteoarthritis and Cartilage  , DOI: ( /j.joca ) Copyright © 2007 Osteoarthritis Research Society International Terms and Conditions


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