Does 4D-flow CMR reveal different aortic flow patterns and wall shear stress maps between RL-BAV and RN-BAV phenotypes?
Different BAV phenotypes exhibit distinct flow patterns and wall shear stress profiles on 4D-flow CMR, potentially explaining different aortic dilatation morphotypes.
Different BAV-phenotypes present different flow patterns with an anterior distribution in RL-BAV, whereas, RN-BAV patients present a predominant posterior outflow jet at the sinotubular junction that shifts to anterior or right anterior in mid and distal AAo. Thus, RL-BAV patients present a higher axial WSS at the aortic root while RN-BAV present a higher circumferential WSS in mid and distal AAo. These results may explain different AAo dilatation morphotypes in the BAV population.
Rodríguez‐Palomares et al. (Thu,) studied this question.