Aortic Valve Insufficiency/etiology; Aortic Valve Stenosis/diagnostic imaging; Aortic Valve Stenosis/surgery; Aortic Valve/diagnostic imaging; Aortic Valve/pathology; Aortic Valve/surgery; Calcinosis/diagnostic imaging; Calcinosis/surgery; Heart Valve Prosthesis; Multidetector Computed Tomography; Transcatheter Aortic Valve Replacement/adverse effects; Transcatheter Aortic Valve Replacement/instrumentation; Aged; Aged, 80 and over; Aortic Valve/physiopathology; Aortic Valve Insufficiency/diagnostic imaging; Aortic Valve Insufficiency/physiopathology; Aortic Valve Stenosis/physiopathology; Area Under Curve; Calcinosis/physiopathology; Female; Humans; Male; Predictive Value of Tests; Prosthesis Design; ROC Curve; Radiographic Image Interpretation, Computer-Assisted; Reproducibility of Results; Retrospective Studies; Risk Factors; Severity of Illness Index; Treatment Outcome