Myocardial perfusion assessed by digital subtraction angiography

Area of Science:

• Cardiology
• Medical Imaging
• Diagnostic Techniques

Background:

• Ischemic heart disease poses a significant global health challenge.
• Accurate assessment of myocardial perfusion is crucial for diagnosis and treatment planning.
• Digital subtraction angiography (DSA) offers a potential method for evaluating regional myocardial blood flow.

Purpose of the Study:

• To evaluate the utility of digital subtraction angiography (DSA) in assessing myocardial perfusion in patients with ischemic heart disease.
• To differentiate perfusion patterns between normal controls and patients with myocardial infarction.
• To correlate DSA findings with the extent and characteristics of myocardial infarction.

Main Methods:

• 45 patients with ischemic heart disease and 5 normal controls underwent DSA.
• Contrast medium (76% Urografin) was injected intravenously via a 5F catheter.
• Myocardial images were analyzed to generate time-density curves for regional perfusion assessment.

Main Results:

• Normal controls showed peak density during systole with a diastolic decrease.
• Myocardial infarction cases exhibited a loss of the typical wave pattern.
• Small infarcts (26 cases) often showed a slowly increasing pattern (85% of cases).
• Large infarcts (19 cases) frequently presented a plateau pattern (79% of cases).

Conclusions:

• DSA provides a quantitative method for assessing myocardial perfusion in ischemic heart disease.
• Observed perfusion patterns correlate with the size of infarcted areas.
• DSA facilitates diagnosis of infarct extent and prognosis of myocardial viability.