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Abstract #5017

Reducing the Sensitivity to Respiratory Motion of Modified Look-Locker with Saturation Recovery for Cardiac T1 Mapping

Ting Song1,2, Vincent B. Ho2,3, Glenn Slavin1, Maureen N. Hood2,3, Jeffrey A. Stainsby4

1GE Healthcare Applied Science Laboratory, Bethesda, MD, United States; 2Radiology, Uniformed Services University of the Health Sciences, Bethesda, MD, United States; 3Radiology, National Navy Medical Center, Bethesda, MD, United States; 4GE Healthcare Applied Science Laboratory, Toronto, ON, Canada

To address cardiac motion, data acquisition is limited to quiescent periods of the cardiac cycle necessitating a segmented method. However, respiratory motion resulting from failed breath holding remains an issue. If a subject fails to maintain a consistent breath hold throughout the entire scan the acquired K-space data is not consistent across segments and this can result in motion artifacts. A new scheme of segment arrangement is proposed in this context. Phantom and human studies were evaluated with the two schemes.