| Autor: |
Feiring, Andrew J., Rumberger, John A., Reiter, Steven J., Collins, Steve M., Skorton, David J., Rees, Michael, Marcus, Melvin L. |
| Zdroj: |
Journal of the American College of Cardiology; August 1988, Vol. 12 Issue: 2 p415-425, 11p |
| Abstrakt: |
In this study, ultrafast computed tomography, a new high spatial and temporal resolution imaging system, was employed to define the range of sectional (tomographic) and segmental left ventricular function in 11 normal anesthetized dogs and 11 normal human volunteers. After intravenous infusion of contrast agent, multilevel tomographic images of the left ventricle (apex to base) were acquired at a rate of 17 frames/s. Analysis of these studies demonstrated substantial but predictable heterogeneity in left ventricular contraction from apex to base. In dogs and humans, for example, the average tomographic ejection fraction of the most basal level of the left ventricle was 40% less than that of the most apical level (p < 0.05). |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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