T. Nozaki, Y. Kaneko, H. Yu, K. Kaneshiro, R. Schwarzkopf, T. Hara, H

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Presentation transcript:

T1rho mapping of entire femoral cartilage using novel depth and angle dependent analysis T. Nozaki, Y. Kaneko, H. Yu, K. Kaneshiro, R. Schwarzkopf, T. Hara, H. Yoshioka Osteoarthritis and Cartilage Volume 23, Pages A248-A249 (April 2015) DOI: 10.1016/j.joca.2015.02.455 Copyright © 2015 Terms and Conditions

Fig.1. Sagittal SPGR images from T1rho sequence of knee MRI after manual segmentation with post-processing. Two observers segmented the entire femoral cartilage of the both images slice by slice independently. After manual segmentation, angular analysis in step of 4-degree and depth analysis with superficial and deep layers was performed automatically. Osteoarthritis and Cartilage 2015 23, A248-A249DOI: (10.1016/j.joca.2015.02.455) Copyright © 2015 Terms and Conditions

Fig.2. Average T1rho values in representative angles. Osteoarthritis and Cartilage 2015 23, A248-A249DOI: (10.1016/j.joca.2015.02.455) Copyright © 2015 Terms and Conditions

Osteoarthritis and Cartilage 2015 23, A248-A249DOI: (10. 1016/j. joca Copyright © 2015 Terms and Conditions

Fig.4. Average T1rho values of weight-bearing and non weight-bearing portion in entire femoral cartilage, medial femoral condyle, and lateral femoral condyle. Osteoarthritis and Cartilage 2015 23, A248-A249DOI: (10.1016/j.joca.2015.02.455) Copyright © 2015 Terms and Conditions

Fig.5. 3D-graph of T1rho mapping of femoral cartilage based on thin-plate spline. (A) 3D-graph of one layer colored on the basis of the difference of T1rho values (B) 3D-graph applied a single color tone per layer with simultaneous expression with superficial, deep, and whole layers. Osteoarthritis and Cartilage 2015 23, A248-A249DOI: (10.1016/j.joca.2015.02.455) Copyright © 2015 Terms and Conditions