From: Feasibility of cardiovascular magnetic resonance derived coronary wave intensity analysis
 | Advantages | Disadvantages |
---|---|---|
Invasive WIA | • More reproducible • More established evidence base in different pathologies | • Requirement for ionising radiation • Potential complications of invasive catheterisation • Difficult to measure bi-directional flow • Data quality very operator dependent |
CMR WIA | • No ionising radiation • Easier to perform serial studies • Allows study of healthy population | • More time consuming post-processing • Requirement for pressure surrogate rather than direct pressure measurement • May not be valid in patients with increased aortic stiffness • Limited spatial resolution and partial volume averaging result in underestimation of flow velocities and absolute wave intensity peaks • Data acquired over multiple cardiac cycles |