Abstract #1568

Wideband Pulse Sequences for Suppressing Image Artifacts Induced by an ICD: A study in a Pediatric Anthropomorphic Phantom

Oluyemi Aboyewa^1,2, KyungPyo Hong², Fuchang Jiang¹, Bhumi Bhusal², Giorgio Bonmassar³, Andrada Popescu⁴, Gregory Webster⁵, Laleh Golestanirad^1,2, and Daniel Kim^1,2

¹Department of Biomedical Engineering, McCormick School of Engineering, Northwestern University, Evanston, IL, United States, ²Department of Radiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States, ³AA. Martinos Center Massachusetts General Hospital Harvard Medical School, Charlestown, MA, United States, ⁴Department of Medical Imaging, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, United States, ⁵Division of Cardiology, Department of Pediatrics, Ann & Robert H. Lurie Children's Hospital, Chicago, IL, United States

Synopsis

This study investigated whether wideband late-gadolinium enhancement (LGE) and T1 mapping pulse sequences can suppress image artifacts induced by an ICD positioned 12cm inferior to the heart in a pediatric anthropomorphic phantom. The ICD induced a peak-to-peak center frequency shift of 970Hz across the heart. The normalized mean signal intensity within the heart was 1.91±1.20 and 0.98±0.39, for standard and wideband LGE with ICD, respectively. The mean myocardial T1 was 1486.1±607.7 and 1728.3±332.3msec for standard and wideband T1 mapping, respectively. Our results demonstrate that wideband pulse sequences can suppress image artifacts induced by an ICD in a pediatric anthropomorphic phantom.

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