T1 mapping of the myocardium: Intra-individual assessment of the effect of field strength, cardiac cycle and variation by myocardial region

Table 3 Inter-observer agreement

	Pearson’s correlation coefficient (r)	p	Bias	95% Limits of agreement	ICC
1.5 T Gd-DTPA
T1 myocardium	1.0	<0.0001	2.3	−15.7 to 20.2	0.999
T1 blood	1.0	<0.0001	0.7	−18.8 to 20.2	1.0
3 T Gd-DTPA diastole
T1 myocardium	1.0	<0.0001	−0.5	−8.5 to 7.4	1.0
T1 blood	1.0	<0.0001	−0.8	−36.7 to 35.1	0.999
3 T Gd-DTPA systole
T1 myocardium	1.0	<0.0001	5.5	−24.0 to 35.0	0.998
T1 blood	1.0	<0.0001	−1.3	−16.4 to 13.7	1.0
3 T Gd-BOPTA diastole
T1 myocardium	1.0	<0.0001	−7.8	−43.2 to 27.6	0.997
T1 blood	1.0	<0.0001	−7.2	−56.3 to 41.9	0.998
3 T Gd-BOPTA systole
T1 myocardium	0.97	<0.0001	−6.4	−80.4 to 67.7	0.984
T1 blood	0.99	<0.0001	−10.9	−135.2 to 113.5	0.993

ISSN: 1532-429X