Abstract #2808

Endovascular thrombectomy using stentretrievers affects the vessel wall: impact demonstrated by wall enhancement at 7T

My Truong^1,2, Karin Markenroth Bloch³, Mads Andersen⁴, Gunnar Andsberg⁵, Johannes Töger⁶, and Johan Wasselius^1,2

¹Medical Imaging Neuroradiology, Skåne University Hospital Lund, Lund, Sweden, ²Dept. of Clinical Sciences, Lund University, Lund, Sweden, ³Lund University Bioimaging Center, Lund University, Lund, Sweden, ⁴Philips Healthcare, Copenhagen, Denmark, ⁵Dept. of Neurology, Skåne University Hospital Lund, Lund, Sweden, ⁶Dept. of Diagnostic Radiology, Skåne University Hospital Lund, Lund University, Lund, Sweden

Stroke is increasingly treated by removing the vessel obstruction via endovascular thrombectomy. 3T imaging has shown wall enhancement after endovascular thrombectomy, and we hypothesize that 7T MR will be beneficial to visualize this enhancement as the higher field strength allows for higher resolution imaging. Seven patients were examined at 7T within two days after endovascular thrombectomy. Vessel wall images pre- and post-contrast administration were reviewed by two neuroadiologists, who rated the image quality as excellent in all cases. In all patients, wall enhancement was found, and correlated to the site of the stent-retriever rather than the site of the embolus.

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