Kety Hsieh1, Rajeev K Verma2, Gerhard Schroth2, Pascal P Gratz2, Frauke Kellner-Weldon2, Jan Gralla2, Christoph Zubler2, Pasquale Mordasini2, Simon Jung2, Heinrich P Mattle2, Marwan El-Koussy2. 1. From the Department of Diagnostic and Interventional Neuroradiology (K.H., R.K.V., G.S., P.P.G., F.K.-W., J.G., C.Z., P.M., M.E.-K.), and Department of Neurology (S.J., H.P.M.), University Hospital Bern, Switzerland. kety.hsieh@insel.ch. 2. From the Department of Diagnostic and Interventional Neuroradiology (K.H., R.K.V., G.S., P.P.G., F.K.-W., J.G., C.Z., P.M., M.E.-K.), and Department of Neurology (S.J., H.P.M.), University Hospital Bern, Switzerland.
Abstract
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.
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.
Authors: A Lindenholz; I C van der Schaaf; A G van der Kolk; H B van der Worp; A A Harteveld; L J Kappelle; J Hendrikse Journal: AJNR Am J Neuroradiol Date: 2020-03-05 Impact factor: 3.825