Using MRI to Assess Aortic Wall Thickness in the Multiethnic Study of Atherosclerosis: Distribution by Race, Sex, and Age
Arthur E. Li1,
Ihab Kamel1,
Felice Rando2,
Melissa Anderson2,
Basak Kumbasar1,
João A. C. Lima3 and
David A. Bluemke1
1 Department of Radiology, Johns Hopkins University School of Medicine, MRI Rm.
143, Baltimore, MD 21287.
2 Department of Epidemiology, University of Washington, Seattle, WA.
3 Department of Medicine, Johns Hopkins University School of Medicine,
Baltimore, MD 21287.

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Fig. 1. Scatterplot shows average wall thickness (in millimeters) as
measured by observer 1 plotted against measurements by observer 2. Subset of
100 subjects was used for analysis. Note excellent agreement between two
observers.
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Fig. 2. Scatterplot shows maximal wall thickness (in millimeters) as
measured by observer 1 plotted against measurements by observer 2. Subset of
100 subjects was used for analysis. Note excellent interobserver agreement
between two observers.
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Fig. 3. Scatterplot shows average wall thickness (in millimeters) for
196 subjects plotted against age. Line fitted by linear regression is also
plotted. Note that average aortic wall thickness increases with age. Five-year
increase in age is associated with 0.07-mm increase in average wall
thickness.
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Fig. 4. Scatterplot shows maximal wall thickness (in millimeters) for
196 subjects plotted against age. Line fitted by linear regression is also
plotted. Note that maximal wall thickness increases with age. Five-year
increase in age is associated with 0.10-mm increase in maximal wall
thickness.
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Copyright © 2004 by the American Roentgen Ray Society.