S I Moskowitz1, M E Kelly, J Haynes, D Fiorella. 1. Division of Cerebrovascular and Endovascular Neurosurgery, Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio, USA.
Abstract
OBJECTIVE AND IMPORTANCE: To describe the use of DynaCT angiographic imaging for the evaluation of Wingspan in-stent restenosis (ISR). METHODS: Two patients were treated with Wingspan stenting and percutaneous transluminal angioplasty (Patient 1 had treatment of a severe stenosis of the right middle cerebral artery and patient 2 had severe stenosis of the left intracranial internal carotid artery. Both patients developed ISR and were evaluated with high resolution DynaCT angiographic imaging. RESULTS: DynaCT demonstrated circumferential soft tissue density material distributed within the stent as the cause of the stenosis visualized with conventional angiography. CONCLUSIONS: These findings support the hypothesis that ISR is caused by neointimal proliferation, rather than vascular re-coil with stent collapse.
OBJECTIVE AND IMPORTANCE: To describe the use of DynaCT angiographic imaging for the evaluation of Wingspan in-stent restenosis (ISR). METHODS: Two patients were treated with Wingspan stenting and percutaneous transluminal angioplasty (Patient 1 had treatment of a severe stenosis of the right middle cerebral artery and patient 2 had severe stenosis of the left intracranial internal carotid artery. Both patients developed ISR and were evaluated with high resolution DynaCT angiographic imaging. RESULTS: DynaCT demonstrated circumferential soft tissue density material distributed within the stent as the cause of the stenosis visualized with conventional angiography. CONCLUSIONS: These findings support the hypothesis that ISR is caused by neointimal proliferation, rather than vascular re-coil with stent collapse.
Authors: Colin P Derdeyn; David Fiorella; Michael J Lynn; Tanya N Turan; George A Cotsonis; Bethany F Lane; Jean Montgomery; L Scott Janis; Marc I Chimowitz Journal: Stroke Date: 2017-04-28 Impact factor: 7.914