T1 at 1.5T and 3T compared with conventional T2* at 1.5T for cardiac siderosis

Table 1 Patient characteristics

Variables	Patients N = 53	Controls N = 20	P-value
Age (years)	35 [24–59]	34 [25–41]	0.45
Gender (Male/Female)	33/20	9/11	0.20
Diagnosis
TM	22
SCA	9
Rare hemoglobinopathies	15
MDS	4
Other	3
LVEF (%)	64 [59–67]
Myocardial T2* (ms) at 1.5T	28.1 [20.4–34.4]	30.8 [29.0–34.4]	0.14
Full range	6.41–41.5	22.6–40.4	0.14
Myocardial T1 (ms) at 1.5T	978 [865–1039]	1014 [974–1033]	0.21
Full range	661–1084	939–1059	0.21
Myocardial T1 (ms) at 3T	1103 [927–1148]	1165 [1119–1194]	0.001
Full range	653–1222	1056–1224	0.001

Data are expressed as median [interquartile range]. LVEF left ventricular ejection fraction, MDS, myelodysplasic syndrome, SCA sickle cell anemia, TM thalassemia major

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