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Abstract #0984

ECG- and Navigator-Free 3D Multi-Contrast Aortic Vessel Imaging with MR Multitasking

Jaime L. Shaw1,2, Anthony G. Christodoulou1, Zhehao Hu1,3, Shlee S. Song4, Marcel M. Maya5, Bin Sun6, Xiaoming Bi7, Fei Han7, Debiao Li1,3,8, and Zhaoyang Fan1,3,8

1Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States, 2Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States, 3Department of Bioengineering, UCLA, Los Angeles, CA, United States, 4Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, United States, 5Department of Imaging, Cedars-Sinai Medical Center, Los Angeles, CA, United States, 6Department of Radiology, Fujian Medical University Union Hospital, Fuzhou, China, 7Siemens Healthineers, Los Angeles, CA, United States, 8Department of Medicine, UCLA, Los Angeles, CA, United States

MR imaging has the potential to provide a comprehensive assessment of atherosclerotic disease of the aortic arch with both luminal and vessel wall imaging approaches, but typically have long scan times. MR Multitasking is useful for expediting acquisitions that have otherwise been complicated by navigator gating or ECG triggering. In this work, we present an MR multitasking technique that simultaneously produces MRA and multi-contrast vessel wall images with a single ECG- and navigator-free 3D acquisition. Four healthy control subjects and four patients with neurovascular disorders and suspected aortic atherosclerosis were scanned. The 3D, free-breathing, non-ECG sequence provided images at time points for MRA, dark blood, and gray blood contrasts.

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