Extended Data Fig. 1: Correlation between transversal and longitudinal MSOT collagenmean/max signals.

Each independent muscle was analyzed for its transversal and longitudinal MSOT collagenmean (a) and collagenmax (b) signal. Correlations between longitudinal and transversal MSOT collagenmean/max signals are given by Spearman correlation coefficient (rs). Two-tailed test. Linear regression lines are in black. P values ≤0.05 were considered statistically significant. n = 316 muscle regions (n = 159 transversal/n = 157 longitudinal independent muscle regions) in n = 20 biologically independent subjects (n = 10 HV/n = 10 DMD patients).