Blood flow and shear stresses were quantified using 4-dimensional flow cardiac magnetic resonance and 3-dimensional particle velocimetry before and after transcatheter aortic valve replacement (TAVR). TAVR reduced turbulent kinetic energy by 47% and shear stresses by 33%, illustrating that the benefit of TAVR extends beyond a simple reduction in transvalvular gradients. (Level of Difficulty: Advanced.).
Keywords: 3-dimensional imaging; CMR, cardiac magnetic resonance; TAVR, transcatheter aortic valve replacement; aortic valve; bicuspid aortic valve; hemodynamics; valve replacement.
© 2022 The Authors.