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Abstract #0628

7 Tesla MRA Enables Differentiation Between Intracranial Aneurysms and Infundibula

Maarten J. Versluis1, 2, Matthias J.P. van Osch1, 2, Marianne A.A. van Walderveen1, Marieke J.H. Wermer3

1Radiology, Leiden University Medical Center, Leiden, Netherlands; 2C.J. Gorter Center for High FIeld MRI, Leiden University Medical Center, Leiden, Netherlands; 3Neurology, Leiden University Medical Center, Leiden, Netherlands

In 5 patients in whom a small vascular lesion was detected at 1.5T or 3T, suspect for an aneurysm or infundibulum underwent an additional 7T MR. In all patients we were able to confirm the presence of an infundibulum and exclude an aneurysm based on the 7T images. Our data suggest that the high resolution of 7T TOF MRI is a useful new non-invasive tool that can help in discriminating true intracranial aneurysms from infundibula and can prevent excessive repeated imaging and invasive techniques and exposure to radiation in patients with small vascular lesions

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