Single-Echo Dixon Imaging for First-Pass Contrast-Enhanced Peripheral Angiography Without Subtraction

Holger Eggers¹, Liesbeth Geerts-Ossevoort², Evert-Jan Vonken³, Tim Leiner³

A flexible dual-echo Dixon method was recently demonstrated to permit first-past contrast-enhanced peripheral angiography without subtraction. In this work, the feasibility of replacing it by a single-echo Dixon method is studied. Fat-suppressed images were reconstructed from dual-echo acquisitions in patients, once separately from the first and the second echo with a single-echo Dixon method and once from both echoes with a dual-echo Dixon method. While single-echo acquisitions promise to decrease scan time or increase spatial resolution, they prove to be more prone to flow and swapping artifacts and more sensitive to the choice of echo time(s).