Related Experiment Videos
FDG uptake within regionally stunned myocardium
1Department of Cardiology, Veteran's Administration Medical Center, Minneapolis, MN 55417, USA.
American Journal of Cardiac Imaging
|October 1, 1995
Summary
Myocardial stunning, a post-ischemic dysfunction, can be identified by positron emission tomography. This technique reveals a "flow-metabolism mismatch," predicting which patients benefit from reperfusion therapies.
Area of Science:
- Cardiology
- Nuclear Medicine
- Medical Imaging
Background:
- Myocardial function can be depressed without overt ischemia or infarction.
- Myocardial stunning is defined as persistent contractile depression after ischemia and reperfusion.
Purpose of the Study:
- To review the role of positron emission tomography in identifying myocardial viability.
- To highlight the significance of the time course of fluorine 18-fluorodeoxyglucose uptake in stunned myocardium.
Main Methods:
- Utilizing positron emission tomography to assess myocardial viability.
- Evaluating fluorine 18-fluorodeoxyglucose (FDG) uptake in relation to perfusion.
- Identifying the
- flow-metabolism mismatch
- pattern.
Main Results:
- Enhanced FDG uptake relative to perfusion indicates viability in stunned myocardium.
- The "flow-metabolism mismatch" pattern predicts response to reperfusion therapies.
- The temporal dynamics of FDG uptake are crucial for understanding stunned myocardium.
Conclusions:
- Positron emission tomography is vital for detecting myocardial viability in stunned regions.
- Understanding the time course of FDG uptake enhances the clinical utility of imaging.
- Identifying stunned myocardium aids in selecting patients for reperfusion therapies.