Statistical analysis
REGRESSION
The relationship between 1.5 T and 3 T R2* was assessed using linear regression. The relationship between the 3 T R2*-LIC and 1.5 T-R2* LIC metrics was assessed using linear regression, and the correlation using Pearson’s rho. Agreement between the two measurements was assessed using the Intraclass Correlation Coefficient (ICC) and Bland Altman analysis (by calculating the bias and 95% limits of agreement (LoA)). The relationship and agreement was also assessed visually using scatter plots and Bland Altman plots with different colours and shapes chosen to distinguish between scanner types. All normality assumptions were assessed and validated using the Shapiro–Wilk test for normality.