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Phase contrast cine magnetic resonance imaging.
N J Pelc1, R J Herfkens, A Shimakawa
1Department of Radiology, Stanford University School of Medicine, California 94305-5105.
Magnetic Resonance Quarterly
|October 1, 1991
Summary
Phase contrast cine magnetic resonance imaging (MRI) offers detailed cardiovascular flow visualization. This technique aids in diagnosing conditions like aortic dissections and evaluating blood flow in various arteries.
Area of Science:
- Cardiovascular Imaging
- Medical Physics
- Flow Dynamics
Background:
- Phase contrast MRI provides flow-dependent contrast.
- Cardiac cine imaging captures dynamic cardiac motion.
- Combining these offers comprehensive cardiovascular assessment.
Purpose of the Study:
- To describe phase contrast cine MRI technique.
- To highlight its diagnostic and quantitative capabilities.
- To discuss its applications in vascular imaging.
Main Methods:
- Utilizes specialized pulse sequences for directional flow sensitivity.
- Employs cardiac synchronization methods, including retrospective interpolation.
- Rapid interleaving of sequences minimizes motion artifacts.
Main Results:
- Generates images reflecting flow velocity and magnitude.
- Enables qualitative assessment of flow presence, direction, and magnitude.
- Provides quantitative estimates of flow velocity, volume, and displaced volumes.
Conclusions:
- Phase contrast cine MRI is valuable for diagnosing aortic dissections.
- It aids in studying flow in large and small vessels (e.g., pulmonary, carotid arteries).
- The technique is useful for evaluating complex anatomical variants and future quantitative applications are anticipated.