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Blood pool MR contrast agents for cardiovascular imaging
M Saeed1, M F Wendland, C B Higgins
1Department of Radiology, University of California, San Francisco, California 94143, USA. Maythem.Saeed@radiology.ucsf.edu
Journal of Magnetic Resonance Imaging : JMRI
|December 6, 2000
Summary
Blood pool agents offer improved magnetic resonance angiography (MRA) by staying longer in the bloodstream, enhancing accuracy and flexibility. These agents provide detailed cardiovascular imaging and are under clinical evaluation.
Area of Science:
- Cardiovascular Imaging
- Magnetic Resonance Imaging
- Medical Diagnostics
Background:
- Conventional MR contrast agents have limited intravascular residence time due to small molecular size.
- This limitation results in transient vascular enhancement, complicating accurate imaging.
- Blood pool agents offer prolonged intravascular presence and higher relaxivity, overcoming these limitations.
Purpose of the Study:
- To review the applications of MR blood pool agents in cardiovascular imaging.
- To highlight the advantages of blood pool agents over conventional agents for MR angiography.
- To discuss the diagnostic potential and physiological information provided by these agents.
Main Methods:
- Review of existing literature on MR blood pool agents.
- Discussion of agent properties like intravascular residence time and relaxivity.
- Exploration of applications in coronary, peripheral, and pulmonary angiography.
Main Results:
- Blood pool agents provide enhanced flexibility, versatility, and accuracy in MR angiography.
- Imaging timing becomes less critical, allowing for larger anatomic region visualization.
- Agents offer insights into vascular dynamics, myocardial perfusion, and microvascular permeability.
Conclusions:
- Blood pool agents represent a significant advancement in cardiovascular MR imaging.
- They hold diagnostic potential for various angiographic applications.
- Ongoing clinical trials are evaluating their broad clinical utility.