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Abstract #1070

Isotropic 3D Black Blood MRI of Abdominal Aortic Aneurysm: Comparison with CT Anigography

Chengcheng Zhu1, Bing Tian2, Florent Seguro1, Joe Leach1, Qi Liu2, Jianping Lu2, Luguang Chen2, Michael Hope1, and David Saloner1

1Radiology, University of California, San Francisco, San Francisco, CA, United States, 2Radiology, Changhai Hospital, Shanghai, China, People's Republic of

Computed Tomography angiography (CTA) is the gold standard for abdominal aortic aneurysm (AAA) imaging, but requires radiation and iodinated contrast. We previously developed an isotropic 3D black blood technique (DANTE-SPACE) for AAA imaging. In this study we validated 3D MRI against CTA for AAA diameter and volume measurement, and found excellent accuracy and reproducibility. Features of intra-luminal thrombus (ILT) composition that are possibly related to faster AAA growth can be identified on 3D MRI but not on CTA. 3D black blood MRI can be used as a non-invasive tool for AAA serial monitoring and ILT evaluation and has the potential to improve patient risk stratification.

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