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Contrast agents in acute myocardial infarction
A Hemmingsson1, T Bjerner, A Ericsson
1Department of Oncology, Radiology and Clinical Immunology, Section of Radiology, University Hospital, SE-751 85 Uppsala, Sweden. anders.hemmingsson@radiol.uu.se
Magma (New York, N.Y.)
|June 8, 2001
Summary
This study evaluated contrast agents for visualizing heart attack damage. A double contrast technique using Dy-DTPA-BMA and Gd-DTPA-BMA provided superior infarct visualization in experimental myocardial infarction models.
Area of Science:
- Cardiovascular Research
- Medical Imaging
- Experimental Pathology
Background:
- Assessing acute myocardial infarction requires valid experimental designs focusing on flow, perfusion, and re-flow.
- Microdialysis can quantify contrast agent concentration in experimental studies.
Purpose of the Study:
- To evaluate extracellular and blood pool contrast agents for visualizing the area at risk in coronary artery occlusions.
- To determine the most effective contrast agent strategy for infarct visualization.
Main Methods:
- Assessment of various extracellular and blood pool contrast agents.
- Utilizing a double contrast technique combining Dy-DTPA-BMA with Gd-DTPA-BMA.
- Measuring contrast agent concentration via microdialysis.
Main Results:
- The double contrast technique (Dy-DTPA-BMA + Gd-DTPA-BMA) demonstrated superior visualization of myocardial infarction.
- Extracellular and blood pool agents were assessed for their utility in defining the area at risk.
- Blood pool agents like NC100/150 show promise for myocardial perfusion imaging.
Conclusions:
- A combined Dy-DTPA-BMA and Gd-DTPA-BMA approach offers superior infarct visualization in experimental models.
- Contrast-enhanced imaging is crucial for valid experimental designs in acute myocardial infarction research.
- Further investigation into blood pool agents for perfusion imaging is warranted.