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Abstract #5115

Ultrashort Echo Time Magnetization Transfer Imaging of Knee Cartilage After Long-Distance Running

Dantian Zhu1, Yijie Fang1, Wenhao Wu1, Shaolin Li1, Long Qian2, and Yajun Ma3
1Department of Radiology,Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China, 2MR Research, GE Healthcare, Beijing, China, 3University of California, San Diego, Department of Radiology, San Diego, CA, United States

Synopsis

Keywords: Cartilage, CartilageTo assess the detection of changes in the knee cartilage of amateur marathon runners before and after long-distance running. We recruited 23 amateur marathon runners prospectively. MRI scans using UTE-MT and UTE-T2* sequences. UTE-MTR and UTE-T2* were measured for knee cartilage. The UTE-MTR values in lateral tibial plateau, central medial femoral condyle, and medial tibial plateau showed a significant decrease at 2 days post-race compared to the other two time points (P < 0.05). But no significant UTE-T2* changes were found for any cartilage subregions. UTE-MTR is a promising method for the detection of dynamic changes in knee cartilage.

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