CT-evaluation of Coronary Ostia Height After Surgical Aortic Valve Replacement.

Multi-detector CT scan (if possible with prospective-ECG gated sequential scan) with contrast medium injection of nonionic contrast agent. All CT datasets will be analysed for the qualitative and quantitative assessment of the aortic root. The coronary height will be assessed at baseline in relation to the aortic annulus and in relation to the stent of the bioprostheses after aortic valve replacement.