Computed Tomography Angiography of Carotid Stent

Abstract

We evaluated Computed Tomography Angiography (CTA) of four different self-expandable stents in phantom model. Three stents ware made of nitinol and one was made of cobalt-based alloy. Each stent placed in plastic injector, filled with diluted iodinated contrast material, and placed on a plastic case filled with saline. CTA was performed on a four-detector CT scanner (detector collimation, 0.5mm: helical pitch 3.5). Axial and longitudinal reconstructions of CT imaging were compared with the in-stent attenuation. Three nitinol stents showed few artifact, and cobalt-based alloy stent was appeared artificial narrowing. In conclusion, CTA is useful for follow-up examination after carotid artery stenting (CAS) as a less invasive evaluation method.

Keywords

Computed tomography angiography carotid artery stenting stenosis

Get full access to this article

View all access options for this article.

References

Coward

Featherstone

Brown

: Safety and efficacy of endovascular treatment of carotid artery stenosis compared with carotid endarterectomy: A Cochrane systematic review of the randomized evidence. Stroke 36: 905–911, 2005.

Qureshi

Kirmani

: Carotid angioplasty with or without stent placement versus carotid endarterectomy for treatment of carotid stenosis: A meta-analysis. Neurosurgery 56: 1171–1179, 2005.

Setacci

de Donato

: In-stent restenosis after carotid angioplasty and stenting: A challenge for the vascular surgeon. Eur J Vasc Endovasc Surg 29: 601–607, 2005.

Levy

Hanel

: Frequency and management of recurrent stenosis after carotid artery stent implantation. J Neurosurg 102: 29–37, 2005.

Christiaans

Ernst

: Antonius Carotid Endarterectomy, Angioplasty, and Stenting Study Group: Restenosis after carotid angioplasty and stenting: A follow-up study with duplex ultrasonography. Eur J Vasc Endovasc Surg 26: 141–144, 2003.

Streifler

Eliasziw

: Angiographic detection of carotid plaque ulceration. Comparison with surgical observations in a multicenter study. North American Symptomatic Carotid Endarterectomy Trial. Stroke 25: 1130–1132, 1994.

Leclerc

Gauvrit

Pruvo

: Usefulness of CT angiography with volume rendering after carotid angioplasty and stenting. Am J Roentgenol 174: 820–822, 2000.

Logason

Karacagil

: Carotid artery endarterectomy solely based on duplex scan findings. Vasc Endovascular Surg 36: 9–15, 2002.

Cinat

Pham

: Improved imaging of carotid artery bifurcation using helical computed tomographic angiography. Ann Vasc Surg 13: 178–183, 1999.

10.

Oliver

Lammie

: Atherosclerotic plaque at the carotid bifurcation: CT angiographic appearance with histopathologic correlation. Am J Neuroradiol 20: 89–901, 1999.

11.

Harada

Nakahara

: Comparison of the findings of multislice CT and angiography after stenting for supraaortic arteries. No Shinkei Geka 32: 29–35, 2004.

12.

Hong

Chrysant

: Coronary artery stent patency assessed with in-stent contrast enhancement measured at multi-detector row CT angiography: Initial experience. Radiology 233: 286–291, 2004.

13.

Behar

Nelson

: Thin-section multidetector CT angiography of renal artery stents. Am J Roentgenol 178: 1155–1159, 2002.

14.

Mallouhi

Rieger

: Volume-rendered multi-detector CT angiography: Noninvasive follow-up of patients treated with renal artery stents. Am J Roentgenol 180: 233–239, 2003.

15.

Cademartiri

Mollet

: Images in cardiovascular medicine. Neointimal hyperplasia in carotid stent detected with multislice computed tomography. Circulation 108: e147, 2003.

16.

Letourneau-Guillon

Soulez

: CT and MR imaging of nitinol stents with radiopaque distal markers. J Vasc Interv Radiol 15: 615–624, 2004.