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Complex flow patterns in the great vessels: a review.
1Department of Radiology, UC Davis Medical Center, Sacramento, USA.
International Journal of Cardiac Imaging
|August 24, 1999
Summary
Magnetic resonance velocity mapping quantifies blood flow using phase shifts. This technique assesses normal flow, valve function, and various cardiovascular conditions in major arteries.
Area of Science:
- Cardiovascular Imaging
- Medical Physics
- Hemodynamics
Background:
- Blood flow quantification is crucial for diagnosing and managing cardiovascular diseases.
- Phase-contrast magnetic resonance imaging (PC-MRI) is a non-invasive technique for assessing blood flow.
- Proton phase shifts in MRI provide a basis for velocity mapping.
Purpose of the Study:
- To review the applications of magnetic resonance velocity mapping for quantifying blood flow.
- To highlight its utility in assessing normal physiology and pathological conditions.
- To discuss advancements in two- and three-directional velocity mapping.
Main Methods:
- Utilizes phase shifts in protons to measure blood flow velocity and volume.
- Employs magnetic resonance imaging (MRI) techniques.
- Includes two- and three-directional velocity mapping for detailed flow analysis.
Main Results:
- Accurate quantification of blood flow velocity and volume in various vessels.
- Assessment of normal aortic and pulmonary artery flow, including forward and backward components.
- Evaluation of aortic and pulmonary valve function in conditions like stenosis and regurgitation.
- Measurement of flow in superior vena cava, pulmonary veins, shunts, and conduits.
Conclusions:
- Magnetic resonance velocity mapping is a versatile tool for cardiovascular assessment.
- It enables detailed study of normal and abnormal blood flow dynamics.
- Advanced techniques allow for comprehensive three- and four-dimensional flow analysis.