Fig. 3
Assessment of agreement between T2 relaxation times measured by T2-TSE and T2-GraSE mapping. (a) Scatter plot showing almost perfect linear correlation (R2 = 0.99) of T2 relaxation times measured by T2-TSE and T2-GraSE mapping. (b) Bland-Altman analysis demonstrated excellent agreement between T2 relaxation readings from both T2-mapping sequences. The mean T2 relaxation time difference (T2-GraSE – T2-TSE) was 0.1 ms (agreement interval 95 %: −6.2 to 6.3 ms). The percentages of cases above and below the limits were 2.0 % and 2.7 %. The Spearman correlation coefficient between T2 relaxation time differences (T2-GraSE – T2-TSE) and mean T2 relaxation times (T2-GraSE & T2-TSE) was 0.33 (p < 0.001)