Figure 8.

Post-interventional flow-sensitive PC sequences in parasagittal orientation showing blood flow during diastole (left) and systole (middle). There is no turbulent flow during systole and also no regurgitant flow during diastole, qualitatively indicating the absence of relevant valvular and paravalvular regurgitation. Note that - due to the signal shielding effect - the position of the nitinol stent frame is depicted as a structure filled with image noise. For quantitative assessment, PC flow-curves integrated over time were obtained using through-plane PC sequences acquired in slices approximately 1 cm below and 1 cm above the prosthesis to avoid the influence of such field distortion effects on measurements.