Abstract #4810

Surveillance of unruptured intracranial saccular aneurysms using non-contrast 3D black blood MRI: comparison of 3D TOF and CE-MRA with DSA

Chengcheng Zhu¹, Xinrui Wang², Bing Tian², Qi Liu², Christopher Hess¹, David Saloner¹, and Jianping Lu²

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

Patients with unruptured intracranial aneurysms (UIAs) routinely undergo surveillance imaging to monitor the growth. CTA and CE-MRA provide good accuracy in measuring size relative to gold standard 3D DSA, but require contrast agent and/or have radiation, which is undesirable for repeated imaging. We compared three MRI techniques on 58 aneurysms: 1) 3D non-contrast black blood MRI (SPACE), 2) 3D TOF 3) CE-MRA, against gold standard 3D DSA. SPACE was in excellent agreement with DSA, better than CE-MRA and TOF. Our results support the use of non-contrast SPACE for surveillance of UIA in the clinical setting.

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