Abstract #2062

Late gadolinium enhancement imaging at low field using through-time spiral GRAPPA

Dominique Franson¹, Rajiv Ramasawmy², Nicole Seiberlich^1,3, and Adrienne Campbell-Washburn²

¹Case Western Reserve University, Cleveland, OH, United States, ²National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States, ³University of Michigan, Ann Arbor, MI, United States

A free-breathing late gadolinium enhancement scan may be beneficial for patients who have difficulty with breath-holds. However, the fast data acquisition needed may be difficult to achieve at low field strengths. Here, an undersampled spiral (R=3) acquisition with a through-time spiral GRAPPA reconstruction is used to achieve high spatial (1.25 x 1.25 mm²) and temporal (139 ms acquisition window) resolution for LGE imaging at 0.55T. The resulting images have qualitatively good contrast-to-noise between lesions and healthy myocardium, with acceptable SNR and without motion blurring.

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