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AJNR Am J Neuroradiol. 2015 Jan;36(1):126-32. doi: 10.3174/ajnr.A4071. Epub 2014 Aug 14.

One-year MR angiographic and clinical follow-up after intracranial mechanical thrombectomy using a stent retriever device.

Author information

1
From the Departments of Neuroradiology (F.E., J.-Y.G., J.-C.F., H.R.).
2
Department of Neuroradiology (J.-C.G.), Centre Hospitalier Universitaire, Brest, France.
3
Clinical Pharmacology (A.B.).
4
Neurology (T.R.), Centre Hospitalier Universitaire, Rennes, France.
5
From the Departments of Neuroradiology (F.E., J.-Y.G., J.-C.F., H.R.) helene.raoult@chu-rennes.fr.

Abstract

BACKGROUND AND PURPOSE:

Little is known about the consequences of arterial wall damage that may be due to mechanical endovascular thrombectomy. Our aim was to perform 1-year MR angiographic and clinical follow-up of patients treated with mechanical endovascular thrombectomy using the Solitaire device.

MATERIALS AND METHODS:

Patients with stroke treated between August 2010 and July 2012 were prospectively evaluated with a minimum follow-up of 1 year after mechanical endovascular thrombectomy. Angiographic follow-up was performed on a 3T MR imaging scanner and included intracranial artery TOF MRA and supra-aortic artery gadolinium-enhanced MRA. Images were assessed to detect arterial abnormalities (stenosis, occlusion, dilation) and were compared with the final post-mechanical endovascular thrombectomy run to differentiate delayed and pre-existing abnormalities. Clinical evaluation was performed with the mRS and the 36-Item Short-Form Health Survey questionnaire quality-of-life scale.

RESULTS:

Thirty-nine patients were angiographically assessed at the mean term of 19 ± 4 months. MRA showed intracranial artery abnormalities in 10 patients, including 5 delayed intracranial artery abnormalities in 4 patients (4 stenoses and 1 dilation), 4 cases of pre-existing intracranial artery stenosis, and 2 occlusions. Pre-existing etiologic cervical artery stenosis or occlusion was observed in 2 patients. All these patients remained asymptomatic during the follow-up period. A significant clinical improvement was observed at 1-year follow-up in comparison with 3-month follow-up (P < .0001), with a good outcome achieved in 62.5% of patients and an acceptable quality of life restored.

CONCLUSIONS:

One-year follow-up identifies delayed asymptomatic arterial abnormalities in patients treated with the Solitaire device.

PMID:
25125665
DOI:
10.3174/ajnr.A4071
[Indexed for MEDLINE]
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