Fig. 9.1
Four-chamber (a) and short-axis (b) images from a FIESTA cine cardiac MRI in a 12-year-old girl show thickening of the pericardium (A) with an adjacent pneumonia (B). Note the normal lung on the right (C)
Fig. 9.2
Four-chamber and short-axis images in a teenage patient with pericarditis show a moderate-size pericardial effusion (E)
Functional imaging can assess for decreased function of the left and right ventricles and for possible constrictive pericarditis. Delayed enhancement on delayed imaging may show evidence of infarction or myocarditis (Fig. 9.3, Table 9.1).
Fig. 9.3
Post-gadolinium double inversion recovery image from a cardiac MRI in a 12-year-old patient with pericarditis shows thickened pericardium (A). It also shows areas of decreased enhancement (B), compared with areas of normally enhancing myocardium (C). These areas of decreased enhancement are likely from myocarditis, as seen from the decreased left ventricular ejection fraction of 36 % on Table 9.1
Measurement | Result | Normal range |
|---|---|---|
Left ventricle | ||
LV end-diastolic volume | 104.4 mL | |
LV end-systolic volume | 66.8 mL | |
LV ejection fraction | 36 % | (50–70) |
LV end-diastolic vol index | 64.4 mL/m2 | (50–84) |
LV end-systolic vol index | 41.2 mL/m2 | (17–37) |
Stroke volume | 37.6 mL | |
Stroke volume index | 23.2 mL/m2 | (30–65) |
Heart rate | 98 bpm | |
Cardiac output | 3.7 L/min | |
Cardiac index | 2.3 L/min/m2 | (2.6–4.2) |
Right ventricle | ||
RV end-dWWiastolic volume | 130.2 mL | |
RV end-systolic volume | 88.2 mL | |
RV ejection fraction | 32 % | (40–60) |
RV stroke volume | 42 mL | |
RV end-diastolic vol index | 80.3 mL/m2 | (62–88) |
RV end-systolic vol index | 54.4 mL/m2
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