Fig. 4

Correlations between ICRS grade and DT imaging, T2 mapping, LIPA, and Mankin score. Strong correlations were observed between ICRS grade and DT imaging (R2 = 0.9734), T2 mapping (R2 = 0.8993), LIPA (R2 = 0.9674), and Mankin score (R2 = 0.9766). DT diffusion tensor, ICRS International Cartilage Repair Society, LIPA laser-induced photoacoustic