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Abstract #4924

Motion Robust Segmented Delayed Enhancement MRI by Partially Reversed ReOrdering for GeneRal SupprESSion of Motion Induced Variable Errors

Wolfgang G Rehwald1,2, Rafael Rojas2, Nestor Mena2, Ryan Seward2, George Gamoneda2, Jeana Dement2, Elizabeth Jenista2, David Wendell2, Han Kim2, Enn-Ling Chen2, Igor Klem2, Vera Kimbrell2, and Raymond Kim2
1Siemens Healthineers, Durham, NC, United States, 2Duke Cardiovascular MR Center, Duke University, Durham, NC, United States

Synopsis

Standard segmented delayed enhancement (DE) is particularly motion sensitive owing to its interleaved reordering required for inversion recovery (IR). Ghosting artifacts frequently result from imperfect breath holding. The sequence cannot run free-breathing (FB). We present a novel DE technique, PROGRESSIVE, using a partially continuous reordering and dummy pulses for simultaneous motion robustness and IR-compatibility. We tested PROGRESSIVE in simulations, a motion phantom, and a cohort of patients. PROGRESSIVE images were devoid of ghosting. When acquired FB, quality was significantly better than standard DE, and equally good during perfect breath holding. PROGRESSIVE has the potential for FB self-navigated DE imaging.

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Keywords