Related Experiment Videos
[Abnormal myocardial blood flow pattern after non-transmural infarction (author's transl)]
Insights
Myocardial perfusion scintigraphy reveals coronary microcirculation issues in patients with angina and normal coronary angiography. This diagnostic tool aids in identifying heart disease when traditional methods show no blockages.
Area of Science:
- Cardiology
- Diagnostic Imaging
- Nuclear Medicine
Background:
- Coronary angiography is standard for diagnosing coronary heart disease.
- Some patients present with angina and myocardial infarction despite normal coronary angiography results.
Observation:
- Three patients with recurrent angina and myocardial infarction showed normal coronary angiography.
- Myocardial perfusion scintigraphy revealed abnormal perfusion patterns in these patients.
Findings:
- Discrepancies between angiography and scintigraphy suggest microcirculation abnormalities, not just major vessel issues.
- Myocardial perfusion scintigraphy is crucial for diagnosing coronary heart disease in patients with normal coronary angiography.
Implications:
- This highlights the importance of assessing coronary microcirculation in specific patient groups.
- Treatment involves platelet-aggregation inhibitors for patients with identified microcirculation abnormalities.
Abstract:
While coronary angiography was within normal limits in three patients with recurrent severe attacks of angina and non-transmural postero-lateral wall myocardial infarction, myocardial perfusion scintigraphy demonstrated an abnormal distribution pattern. In addition to recanalised thrombosis, embolism or spasm, abnormalities in the microcirculation are possible causes of the discrepancy between the coronary arteriogram and the scintigram. Myocardial perfusion scintigraphy is of particular diagnostic significance in this group of patients with coronary heart disease but normal coronary angiography. Treatment in the presence of this finding consists of administration of platelet-aggregation inhibitors.