Table 2.
Distribution of iron throughout the left ventricular myocardium. The differences in iron concentration (Δ) are compared against the mean [Fe] dw for a reference (ref) region.
LV Region of interest | All hearts (excluding heart 4) | Heart 4 alone | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
[Fe] mg/g | 95% CI | p value | [Fe] mg/g | 95% CI | p value | |||||
Epicardium (reference) | 6.17 | 4.65 | 7.69 | Ref | 36.10 | 31.58 | 40.62 | Ref | ||
Mesocardium (Δ) | −0.07 | −0.34 | 0.20 | 0.63 | −19.75 | −21.71 | −17.79 | <0.001 | ||
Endocardium (Δ) | −0.46 | −0.73 | −0.19 | 0.001 | −10.11 | −12.75 | −7.46 | <0.001 | ||
| ||||||||||
Global LV (reference) | 6.01 | 4.30 | 7.72 | Ref | 26.15 | 23.31 | 28.99 | Ref | ||
Basal | 1 | Ant (Δ) | −0.37 | −1.30 | 0.56 | 0.43 | 1.12 | |||
2 | Ant-sep (Δ) | 0.09 | −0.84 | 1.02 | 0.85 | −7.31 | ||||
3 | Inf-sep (Δ) | −0.27 | −1.20 | 0.66 | 0.57 | −6.59 | ||||
4 | Inf (Δ) | −0.41 | −1.34 | 0.52 | 0.39 | 5.26 | ||||
5 | Inf-lat (Δ) | −0.14 | −1.07 | 0.79 | 0.77 | −4.09 | ||||
6 | Ant-lat (Δ) | 0.38 | −0.55 | 1.31 | 0.43 | −2.99 | ||||
| ||||||||||
Mid | 7 | Ant (Δ) | 0.03 | −0.90 | 0.96 | 0.94 | 4.39 | |||
8 | Ant-sep (Δ) | 0.50 | −0.43 | 1.43 | 0.29 | 3.05 | ||||
9 | Inf-sep (Δ) | 0.59 | −0.34 | 1.52 | 0.22 | −1.33 | ||||
10 | Inf (Δ) | −0.01 | −0.94 | 0.92 | 0.98 | −0.67 | ||||
11 | Inf-lat (Δ) | 0.02 | −0.91 | 0.95 | 0.97 | 2.23 | ||||
12 | Ant-lat (Δ) | 0.43 | −0.50 | 1.36 | 0.37 | 1.06 | ||||
| ||||||||||
Apical | 13 | Ant (Δ) | 0.08 | −0.85 | 1.01 | 0.87 | 4.88 | |||
14 | Sep (Δ) | −0.29 | −1.22 | 0.64 | 0.54 | −4.43 | ||||
15 | Inf (Δ) | −0.12 | −1.05 | 0.81 | 0.81 | 8.57 | ||||
16 | Lat (Δ) | −0.50 | −1.43 | 0.43 | 0.29 | 3.69 | ||||
| ||||||||||
Global LV (reference) | 5.99 | 4.28 | 7.71 | Ref | 26.15 | 23.31 | 28.99 | Ref | ||
Anterior (Δ) | −0.07 | −0.93 | 0.78 | 0.87 | 3.46 | −5.30 | 12.23 | 0.39 | ||
Anterolateral (Δ) | 0.16 | −0.70 | 1.01 | 0.72 | −0.36 | −8.30 | 7.58 | 0.93 | ||
Inferolateral (Δ) | −0.06 | −0.91 | 0.80 | 0.89 | 1.56 | −6.38 | 9.50 | 0.69 | ||
Inferior (Δ) | −0.16 | −1.02 | 0.69 | 0.71 | 4.39 | −3.31 | 12.09 | 0.26 | ||
Inferoseptal (Δ) | −0.06 | −0.92 | 0.79 | 0.89 | −3.93 | −7.39 | −0.48 | 0.28 | ||
Anteroseptal (Δ) | 0.20 | −0.66 | 1.05 | 0.65 | −5.11 | −8.29 | −1.93 | 0.16 | ||
| ||||||||||
Apical (Δ) | 0.27 | −0.55 | 1.10 | 0.51 | 1.99 | −4.41 | 8.40 | 0.49 | ||
Mid (Δ) | −0.17 | −1.00 | 0.66 | 0.69 | 0.44 | −7.18 | 8.06 | 0.88 | ||
Basal (Δ) | −0.11 | −0.93 | 0.72 | 0.80 | −2.43 | −9.30 | 4.44 | 0.40 |
AHA segments are numbered and labelled as: ant = anterior; sep = septum; lat = lateral; inf = inferior).