Key result
Left ventricular stroke volume derived from MR velocity maps in the ascending aorta correlated highly with measurements from MR spin echo sequences (correlation coefficient 0.97, p<0.001).
Why the study?
Does left ventricular stroke volume calculated by summing transverse MR slices correlate with stroke output derived from velocity maps in the ascending aorta in healthy volunteers?
Population
10 healthy volunteers
Comparison
Calculation of left ventricular stroke volume by… vs Stroke output derived from velocity maps in the…
Design
Cross-sectional
Authors
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Supports MR velocity mapping for stroke volume in volunteers; leaves open validation in patients with disease.
Observational (n=10)
Does left ventricular stroke volume calculated by summing transverse MR slices correlate with stroke output derived from velocity maps in the ascending aorta in healthy volunteers?
Effect estimate: correlation coefficient 0.97
p-value: p=<0.001
MR velocity imaging provides highly accurate measurements of stroke volume compared to standard spin echo sequences, supporting its potential for assessing cardiovascular hemodynamics.
Firmin et al. (1987) conducted an observational in Healthy (n=10). MR velocity maps in the ascending aorta (field even-echo rephasing sequence) vs. MR spin echo sequence (summing areas of contiguous transverse slices) was evaluated on Left ventricular stroke volume correlation (correlation coefficient 0.97, p=<0.001). Left ventricular stroke volume derived from MR velocity maps in the ascending aorta correlated highly with measurements from MR spin echo sequences (correlation coefficient 0.97, p<0.001).
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