Fig. 5
Correlation plots A and C and Bland–Altman plots B and D demonstrating the repeatability of K1 as a measure of skeletal muscle perfusion in the lower legs using the 1TCM (A and B) and ARG (C and D). The blue numbers represent participant identification. The analysis includes perfusion values from all participants, both the left and right leg (n = 80). The correlation plots compare the K1 values from the test and retest scan and include coefficient of determination (r2) and the linear equation. The dashed lines represent the lines of identity, while the solid lines represent the linear fit. The Bland–Altman plots display the mean difference between the K1 measurements from the retest and test scan, with the dashed lines representing the 95% upper and lower limits of agreement