Accuracy of CT Angiography for Differentiating Pseudo-Occlusion from True Occlusion or High-Grade Stenosis of the Extracranial ICA in Acute Ischemic Stroke: A Retrospective MR CLEAN Substudy

^aFrom the Departments of Radiology (M.K., H.A.M., O.A.B., J.B., C.B.L.M.M, B.J.E.)
^bBiomedical Engineering and Physics (H.A.M.), Academic Medical Center, Amsterdam, the Netherlands
^cDepartments of Radiology (A.v.d.L.)
^dNeurology (O.A.B.), Erasmus Medical Center, Rotterdam, the Netherlands
^eDepartment of Radiology (O.A.B., W.H.v.Z.), Maastricht University Medical Center, Maastricht, the Netherlands
^fDepartment of Radiology (J.A.V.), St. Antonius Hospital, Nieuwegein, the Netherlands
^gDepartment of Radiology (G.L.à.N.), Haaglanden Medical Centre, The Hague, the Netherlands.

Please address correspondence to Bart J. Emmer, MD, PhD, Academic Medical Center, Department of Radiology, G1–240, Meibergdreef 9, 1105 AZ Amsterdam, the Netherlands; e-mail: b.j.emmer{at}amc.uva.nl