Value of CMR Flow Measurements in the Evaluation of Congenital Heart Disease
6 الي 8 مرداد 1395، مشهد - ايران
Presentation Type: Speech
Assessment of blood flow is an important integral part of the overall assessment of the cardiovascular system in congenital Heart disease (CHD). Cardiovascular magnetic resonance (CMR) phase-contrast mapping offers several advantages for measuring blood flow and blood flow velocity including wide fields of view, unlimited by windows of access, and the ability to measure many different aspects of the complicated blood flow in the heart and vessels including volume flow (cardiac output, shunt, valve regurgitation), peak blood velocity (for stenosis), patterns and timings of velocity waveforms and flow distributions within heart chambers (abnormal ventricular function) and vessels (pulse-wave velocity, vessel stiffness). CMR with velocity mapping is particularly useful in patients with CHD. Cardiac output, shunts quantification (Qp:Qs ratio), vascular and valvular stenosis and valvular regurgitation can be reliably and accurately assessed. In addition, the technique is also invaluable in the evaluation of post-surgical and interventional procedures in CHD such Fontan operation, Mustard repair, arterial switch, coarctation repair, etc… and the complications associated with these procedures. The basic concept, the clinical applications in CHD and the advantages and limitations of this technique will be reviewed in this this presentation.