Commissural alignment with the novel Hydra transcatheter heart valve during aortic valve replacement

Figure 1. Commissural alignment with Hydra THV. Computed tomography showing severe aortic valve stenosis (A1), with 3-cusp view reconstruction (A2). The novel Hydra THV (A3) with the three-tentacle design (1,2,3) and commissural posts (red arrows) at their bases; six radiopaque markers are located three by three in two rows (black asterisks), each asymmetrically positioned between two prosthetic commissures (dashed lines). Proper commissural alignment (B1) is achieved using the RCC-LCC overlap view (B2, blue dashed line in B1)  when one tentacle is on the left and the other two appear on the right (yellow box in B3); the radiopaque markers are ...