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AJNR - American Journal of Neuroradiology

Published ahead of print on September 24, 2007
doi: 10.3174/ajnr.A0713

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American Journal of Neuroradiology 28:1752-1754, October 2007
© 2007 American Society of Neuroradiology

Case Report
INTERVENTIONAL

CT Angiographic Appearance of In-Stent Restenosis of Intracranial Arteries Treated with the Wingspan Stent

A.S. Turk^a,b, H.A. Rowley^a, D.B. Niemann^a,b, D. Fiorella^c, B. Aagaard-Kienitz^a,b, K. Pulfer^a and C.M. Strother^a,b

^a Department of Radiology, University of Wisconsin Hospital and Clinics, Madison, Wis
^b Department of Neurosurgery, University of Wisconsin Hospital and Clinics, Madison, Wis
^c Department of Radiology, Cleveland Clinic Foundation, Cleveland, Ohio

Please address correspondence to Aquilla S. Turk, DO, 600 Highland Ave, CSC E3/372, Madison, WI 53792; e-mail: as.turk{at}hosp.wisc.edu

SUMMARY: Four patients underwent angioplasty and stenting of medically refractory symptomatic intracranial atherosclerosis with the new Wingspan stent system. In all 4 patients, CT angiography (CTA) showed an abnormality within the stented segment that was suggestive of nonocclusive in-stent thrombus. However, subsequent conventional angiography findings were typical for in-stent restenosis. The CTA imaging features of in-stent restenosis are important to recognize, and the misinterpretation of in-stent restenosis as in-stent thrombus may result in inappropriate management.