Abstract #1376

T2 and T1rho mapping of ankle cartilage of female and male ballet dancers

Saya Horiuchi¹, Hon J. Yu¹, Alex Luk¹, Adam Rudd¹, Jimmy Ton¹, Edward Kuoy¹, Jeff Russell², Kelli Sharp³, and Hiroshi Yoshioka¹

¹Radiological Sciences, University of California, Irvine, Irvine, CA, United States, ²Science and Health in Artistic Performance, Ohio University, Athens, OH, United States, ³Department of Dance, The Claire Trevor School of the Arts, University of California, Irvine, Irvine, CA, United States

This study demonstrated T2 and T1rho profiles of talar dome and tibial plafond cartilage from male and female ballet dancers using angular-segmentation methodology for quantitative assessment of cartilage in vivo. The results in this study showed both T2 and T1rho relaxation time indicated the lowest value over the central weight-bearing portion, while they indicated relatively higher values in the anterior and posterior portion. These findings can be due to the combination of the magic angle effect which has higher influence on T2 value and early cartilage degenerative changes which are more sharply detected by T1rho value.

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