Fig 3. Bland-Altman plots for intra- and inter-observer agreement of R2* measurements based on the largest cross-section and the whole tumour with mean absolute differences (continuous line) and 95% CI of the mean differences (dashed lines).

For intra-observer agreement, measurements from both the first and second MRI scan were included in this analysis. While for the inter-observer agreement, the Bland-Altman plot shows the difference between measurements of two observers against the average measurement. (A) Intra-observer agreement of R2*largest for observer 1. (B) Intra-observer agreement of R2*largest for observer 2. (C) Intra-observer agreement of R2*whole for observer 1. (D) Intra-observer agreement of R2*whole for observer 2. (E) Inter-observer agreement for R2*largest. (F) Inter-observer agreement for R2*whole.