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- Title
Swallowing, arterial pulsation, and breathing induce motion artifacts in carotid artery MRI.
- Authors
Boussel, Loic; Herigault, Gwenael; de la Vega, Alejandro; Nonent, Michel; Douek, Philippe Charles; Serfaty, Jean Michel
- Abstract
Purpose To identify and quantify the potential sources of motion in carotid artery imaging. Materials and Methods Two healthy volunteers and 12 patients (20-75 years old) with atherosclerotic disease were scanned on a Philips Intera 1.5T system. A single-shot balanced-fast field echo (bFFE) sequence was used to acquire real-time axial views of the carotid artery wall (three images per second). A three-step acquisition protocol was performed to analyze the three types of motion (arterial pulsation, breathing, and swallowing) separately. The isocenter carotid artery motion amplitude in either the x or y direction was measured. Radial variation in the carotid lumen between the systolic and diastolic phases was analyzed. Motion frequency was reported for each patient. Results Significant motion related to arterial pulsation (amplitude = 0.27-0.93 mm, mean = 0.6, SD = 0.19), breathing (amplitude = 0.5-3.6 mm, mean = 1.56, SD = 0.99)), and swallowing (amplitude = 1.4-9.2 mm, mean = 4.7, SD = 2.4) were visualized. Conclusion Pulsation, breathing, and swallowing are sources of significant motion in the carotid artery wall. Such motion should be considered in the future to improve carotid artery image quality. J. Magn. Reson. Imaging 2006. © 2006 Wiley-Liss, Inc.
- Publication
Journal of Magnetic Resonance Imaging, 2006, Vol 23, Issue 3, p413
- ISSN
1053-1807
- Publication type
Article
- DOI
10.1002/jmri.20525