Multimodality imaging in transcatheter aortic valve implantation (TAVI): comparison between cardiovascular magnetic resonance, cardiac computed tomography and echocardiography by Prasad Sanjay, Delahunty Nicola, Mullen Michael J, Davies Simon, Paes Maria N, Ismail Tevfik, Alpendurada Francisco, Roussin Isabelle, Park Bradley, Okoroafor Francois, Andrew Jabbour, Rubens Michael, Moat Neil, Mohiaddin Raad