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Abstract #0975

Non-contrast enhanced MR angiography in the calf: A comparison between Flow-sensitive dephasing prepared steady-state free precession and quiescent-interval single-shot in patients with diabetes

Hanwei Chen 1 , Na Zhang 2,3 , and Xin Liu 2,3

1 Department of Radiology, Guangzhou Panyu Central Hospital, Guangzhou, Guangdong, China, 2 Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology of Chinese Academy of Sciences, Shenzhen, Guangdong, China, 3 Shenzhen Key Laboratory for MRI, Shenzhen, Guangdong, China

Two non-contrast enhanced magnetic resonance angiography (NCE-MRA) techniques based on steady-state free precession (SSFP), namely flow-sensitive dephasing (FSD) and quiescent-interval single-shot (QISS), have been proposed to achieve higher signal to noise ratio (SNR) of arterial blood and less flow artifacts existed inherently in TSE-based NCE-MRA. The purpose of this study was to compare the image quality and diagnostic accuracy of the FSD and QISS techniques for the detection of lower extremity arterial stenosis in a diabetic patient cohort, using conventional high resolution contrast-enhanced MRA (CE-MRA) as the reference standard.

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