As more endovascular interventions are being used in the carotid circulation, including carotid angioplasty and stenting, a reliable imaging modality is needed to follow the results. Currently, duplex ultrasonography, magnetic resonance angiography (MRA), and angiography are the main modalities used. This report presents a case of MRA and duplex ultrasonography providing drastically different images, presenting the clinician with an opportunity to evaluate the various imaging modalities that are used in evaluating carotid stent patency.
Veith FJ, Amor M., Ohki T., et al. Current status of carotid bifurcation angioplasty and stenting based on a consensus of opinion leaders. J Vasc Surg. 2001;33(2suppl):S111-S116.
2.
Cumbie T., Rosero EB, Valentine RJ, Modrall JG, Clagett GP, Timaran CHUtility and accuracy of duplex ultrasonography in evaluating in-stent restenosis after carotid stenting. Am J Surg. 2008;196:623-628.
3.
Nederkoorn PJ , Elgersma OE, Mail WP, Eikelboom BC, Kappelle LJ, von der Graaf Y.Overestimation of carotid artery stenosis with magnetic resonance angiography compared with digital subtraction angiography . J Vasc Surg. 2002;36:806-813.
4.
Back MR, Wilson JS, Rushing G., et al. Magnetic resonance imaging is an accurate imaging adjunct to duplex ultrasound scan in patient selection for carotic endarterectomy. J Vasc Surg. 2000;32:429-440.
5.
Patel MR, Kuntz KM, Klufas RA, Kim D., Kramer J., Polak JFPreoperative assessment of the carotid bifurcation. Can magnetic resonance angiography and duplex ultrasonography replace contrast arteriography? Stroke. 1995;26:1753-1758.
6.
Buecker A., Spuentrup E., Ruebben A., Gunther RWArtifact-free in-stent lumen visualization by standard magnetic resonance angiography using a new metallic magnetic resonance imaging stent. Circulation. 2002;105:1772-1775.
7.
Lenhart M., Volk M., Manke C., et al. Stent Appearance at contrast-enhanced MR angiography: in vitro examination with 14 stents. Radiology. 2000 ;217:173-178.
8.
Maintz D., Kugel H., Schellhammer F. In vitro evaluation of intra-vascular stent artifacts in three-dimensional MR angiography. Invest Radiol. 2001;36:218-224.
9.
Meyer JM, Buecker A., Schuermann K.MR evaluation of stent patency: in vitro test of 22 metallic stents and the possibility of determining their patency by MR angiography. Invest Radiol. 2000;35:739-746.
10.
Liu H., Martin AJ, Truwit CLInterventional MRI at high-field (1.5 T): needle artifacts. J Magn Reson Imaging. 1998; 8:214-219.
11.
Kwon BJ, Jung C., Sheen SH, Cho JH, Han MHCT angiography of stented carotid arteries: comparison with Doppler ultrasonography . J Endovasc Ther. 2007;14:489-497.
