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Abstract #2039

A Magnetization Recovery Matched TI-Scout for Exact Determination of Inversion Time in Segmented Inversion Recovery Gradient Echo Imaging for Late Gadolinium Enhancement

Wolfgang G Rehwald1,2, Igor Klem2, Marshall Ronningen2, Elizabeth Jenista2, Nestor Mena2, George Gamoneda2, Rafael Rojas2, Stephen Darty2, Enn-Ling Chen2, Clerio De Azevedo Filho2, Brenda Hayes2, Shawn McCarthy2, Fawaz Alenezi2, David Wendell2, Han Kim2, and Raymond Kim2

1Siemens Healthineers, Durham, NC, United States, 2Duke Cardiovascular MR Center, Duke University, Durham, NC, United States

We present a new TI-scout sequence based on multiple single-shot GRE acquisitions with timing and readout parameters matched to segmented inversion recovery imaging for which optimal TI is to be determined. Temporal magnetic evolution of the scout is identical to that of the segmented GRE sequence for LGE. The new technique substantially improves upon the existing SSFP cine-based TI scout that typically underestimates TI and provides mediocre image quality. We show accurate TI determination by comparison with gold standard TI found by an expert and compare image quality and signal ratios of existing, new TI scout, and segmented LGE.

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