Figure 1

Images of a phantom using the standard LGE Cartesian sequence acquired using (a) left / right (l/r) and (b) head / foot (h/f) phase encoding and (c) when using the spiral sequence. The phantom consists of two circular bottles with one placed inside the other, mimicking the left ventricular blood pool and myocardium. The bottles were filled with different concentrations of gadolinium such that the inner bottle (LV blood pool) had a shorter T1 than the outer bottle (myocardium). The Cartesian LGE images ((a) & (b)) show edge artefact in the phase encoding direction, resulting from longitudinal magnetisation recovery through the long acquisition window (arrows). This artefact is not present on the LGE spiral image due to the much shorter acquisition window.