Self-navigated versus navigator-gated 3D MRI sequence for non-enhanced aortic root measurement in transcatheter aortic valve implantation

Highlights: • 3D whole-heart MRA provides TAVI relevant aortic root measurements without contrast media administration. • Self-navigated MRA enables TAVI measurements with shortened scan time and substantial larger volume coverage compared to navigator-gated MRA. • Valve prothesis sizing based on self-navigated MRA is equivalent to standardized computed tomography angiography. To prospectively compare image-quality, reliability and graft sizing of a prototype self-navigated and a navigator-gated non-contrast three dimensional (3D) whole-heart magnetic-resonance-angiography (MRA) sequence with computed-tomography-angiography (CTA) for planning transcatheter-aortic-valve-implantation (TAVI).