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Abstract #4499

Comparison of 3D non-contrast enhanced foot MR angiography using steady-state free precession with single and multi-directional FSD modules preparation

Na Zhang 1,2 , Zhaoyang Fan 3 , and Xin Liu 1,2

1 Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology of Chinese Academy of Sciences, Shenzhen, Guangdong, China, 2 Shenzhen Key Laboratory for MRI, Shenzhen, Guangdong, China, 3 Biomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, United States

Three-dimensional (3D) non-contrast enhanced MR angiography (NCE-MRA) using flow-sensitive dephasing (FSD) prepared steady-state free precession (SSFP) had proved a promising strategy for evaluation of peripheral vasculature without the use of gadolinium-based contrast agent. The magnetization preparation with FSD gradients was used for the blood signal suppression with advantages of flow-independence. It could be flexibly configured in both direction and strength so that multidirectional flow suppression was feasible. The purpose of this study was to compare the image quality of pedal arteries acquired from the NCE-MRA technique with single directional and two-directional FSD modules preparation, respectively.

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