ECHO 2013 / Cardiac Magnetic Resonance Imaging in the Adult Congenital Patient
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CMR RV Contours - Diastole
CMR RV Contours - Systole
Repeatability of CMR RV Size and
Function in Congenital Heart Disease
Walsh Pediatr Radiol 2011
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Interobserver |
Intraobserver |
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Comparisons |
Comparisons |
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RV EDV Difference (ml/m2) |
-1.4 + 7.7 |
-1.2 + 6.8 |
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RV EDV Coefficient of |
3.3% |
3.2% |
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Variability |
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RV EDV Repeatability |
14.9% |
13.2% |
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Coefficient |
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RV EDV Threshold Values |
20.2 |
15.1 |
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(ml/m2) |
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RV EF Repeated Coefficient |
6.0% |
5.0% |
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RV EF Threshold Values (%) |
3.0 |
2.6 |
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CMR in Adult CHD
•Program Description
•CMR Technique
•Reproducibility
•Other Strengths and Limitations
•Cases
Other Strengths of CMR
•Window independent
•3D assessment
•Tissue characterization
•Myocardial viability
•Flow ratios
•Extracardiac structures
•Safety (no radiation exposure)
Limitations of CMR
•Load dependent
•Size limitation
•Sedation sometimes required
•Metallic artifacts
•Pacemaker incompatibility
•Not available in the OR or cath lab
CMR in Adult CHD
•Program Description
•CMR Technique
•Reproducibility
•Other Strengths and Limitations
•Cases
QUESTION
Cardiac MRI sequence(s) that can be used to measure stroke volumes for the assessment of valvular regurgitation:
1.Bright blood (cine) imaging
2.Black blood imaging
3.Phase contrast
4.Both 1 and 3
Case
•21 yr-old with tetralogy of Fallot with pulmonary atresia, s/p repair with takedown of Blalock-Taussig shunt and subsequent replacement of RV-to-PA conduit
•Indication: RV size/function, RVOT, and pulmonary regurgitation (PR)
