Multimodal 3 Tesla MRI Confirms Intact Arterial Wall in Acute Stroke Patients After Stent-Retriever Thrombectomy
Background and Purpose—The aim of this prospective study was to assess vascular integrity after stent-retriever thrombectomy.
Methods—Dissection, contrast medium extravasation, and vasospasm were evaluated in 23 patients after thrombectomy with biplane or 3D-digital subtraction angiography and 3-Tesla vessel wall MRI.
Results—Vasospasm was detected angiographically in 10 patients, necessitating intra-arterial nimodipine in 2 of them. Contrast extravasation, intramural hemorrhage, or iatrogenic dissection were not detected on multimodal MRI in any patient even after Y-double stent-retriever technique.
Conclusions—Our findings suggest that clinically relevant vessel wall injuries occur rarely after stent-retriever thrombectomy.
- Received July 3, 2014.
- Revision received August 27, 2014.
- Accepted September 9, 2014.
- © 2014 American Heart Association, Inc.