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Effect of contrast enhancement on the measurement of carotid arterial lumen and wall volume using MRI

✍ Scribed by Binh An P. Phan; Baocheng Chu; William S. Kerwin; Dongxiang Xu; Chun Yuan; Thomas Hatsukami; Xue-Qiao Zhao

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
211 KB
Volume
23
Category
Article
ISSN
1053-1807

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✦ Synopsis

Abstract

Purpose

To investigate whether gadolinium (Gd)‐based contrast enhancement (CE) affects high‐resolution magnetic resonance imaging (MRI) measurements of carotid arterial wall volume.

Materials and Methods

The common carotid artery (CCA), bifurcation, and internal carotid artery (ICA) of 50 consecutive patients were imaged using 1.5T MRI. T1‐weighted (T1W) images were obtained before and after Gd administration. Pre‐ and post‐CE measurements were compared among different arterial locations of the CCA, bifurcation, and ICA, and among different atherosclerotic lesion types.

Results

In comparison to pre‐CE T1W images, post‐CE images showed an increase in the apparent wall volume measurement of 28.2% (108.7 mm^3^ vs. 84.7 mm^3^, P < 0.001). The post‐CE measurement increases in wall volume for the CCA, bifurcation, and ICA were 26.7%, 29.2%, and 28.0%, respectively.

Conclusion

Gd CE causes a significant increase in the apparent volume of the carotid wall throughout multiple carotid artery locations, which may be associated with improved visibility or neovascularization. J. Magn. Reson. Imaging 2006. © 2006 Wiley‐Liss, Inc.

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