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Abstract #4462

Wideband Arrhythmia-Insensitive-Rapid (AIR) Cardiac T 1 mapping Pulse Sequence for suppressing Image Artifacts induced by ICD

Kyungpyo Hong 1,2 , Eun-Kee Jeong 1 , and Daniel Kim 1

1 UCAIR, Department of Radiology, University of Utah, Salt Lake City, Utah, United States, 2 Department of Bioengineering, University of Utah, Salt Lake City, Utah, United States

Standard cardiac T 1 mapping generates image artifacts in patients with implantable cardioverter-defibrillator (ICD). We propose to perform successful cardiac T 1 mapping in patients with ICD by incorporating a saturation radio-frequency pulse with wide frequency bandwidth (8.9 kHz). In 11 subjects with ICD, compared with T 1 measurements produced by standard T 1 mapping without ICD as the control, T 1 measurements by standard T 1 mapping with ICD were significantly different (p < 0.05), whereas T 1 measurements by wideband T 1 mapping with ICD were not significantly different. This study demonstrates the feasibility of wideband cardiac AIR T 1 mapping for suppressing artifacts induced by ICD.

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