Table 1 Demographic, clinical and cardiovascular magnetic resonance (CMR) data of the patients

Sex (males/females)

59/87

Age (years)

38.7 ± 11.1

Transfusion starting age (months)

16.5 ± 14.9

Chelation starting age (years)

4.5 ± 5.6

Splenectomy, %

40.6

Past or active hepatitis C virus infection, (%)

67.2

Pre-transfusion hemoglobin (g/dl)

9.7 ± 0.4

Serum ferritin (ng/l)

1205 ± 1147

Global myocardial T1 (ms)

952 ± 99

Global myocardialT2*(ms)

37.4 ± 9.3

LV end-diastolic volume index (ml/m²)

83.8 ± 16.4

LV end-systolic volume index (ml/m²)

31.7 ± 10.3

LV stroke volume index (ml/m²)

52.0 ± 9.9

LV mass index

59.6 ± 12.8

LV ejection fraction (%)

62.5 ± 7.4

Abnormal LV motion, N (%)

14 (9.6)

Replacement myocardial fibrosis, N (%)

36/88 (40.9%)