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Blood flow patterns in the human aorta studied by magnetic resonance
R H Klipstein1, D N Firmin, S R Underwood
1Magnetic Resonance Unit, National Heart and Chest Hospitals, London.
British Heart Journal
|October 1, 1987
Summary
Magnetic resonance velocity mapping reveals detailed aortic blood flow patterns in healthy individuals. This non-invasive technique provides accurate, high-resolution data for cardiovascular studies.
Area of Science:
- Cardiovascular Physiology
- Medical Imaging
- Biomedical Engineering
Background:
- Understanding blood flow dynamics in the aorta is crucial for diagnosing cardiovascular conditions.
- Non-invasive imaging techniques are preferred for studying cardiovascular physiology in vivo.
Purpose of the Study:
- To investigate aortic blood flow patterns using magnetic resonance velocity mapping.
- To assess the feasibility and utility of this technique for cardiovascular research.
Main Methods:
- Two-dimensional velocity profiles were acquired using the field even echo rephasing sequence.
- Flow patterns were analyzed in the ascending and descending aorta of ten healthy volunteers.
Main Results:
- Skewed velocity profiles were observed in the ascending aorta during systole.
- Diastolic flow reversal occurred along the posterior left wall of the ascending aorta.
- Plug flow with minimal skew was noted in the descending aorta, with diastolic reversal along the right wall.
Conclusions:
- Magnetic resonance velocity mapping provides powerful, quantitative, and accurate two-dimensional cardiovascular data.
- The non-invasive nature and high spatial resolution make it suitable for clinical applications.
- No turbulent flow was detected in the aorta of healthy subjects, highlighting normal flow characteristics.