Why the study?
Does Thallium-201 myocardial scintigraphy at rest improve the detection of previous infarction compared to recent ECG in patients with cardiac disease?
Does Thallium-201 myocardial scintigraphy at rest improve the detection of previous infarction compared to recent ECG in patients with cardiac disease?
Thallium-201 scintigraphy at rest is a highly sensitive method for detecting previous myocardial infarction, outperforming recent ECGs, despite a risk of false positives.
May aid silent MI detection in select patients; cross-sectional data leave clinical adoption open pending validation.
The ability of thallium-201 scintigraphy to detect previous infarction (greater than 6 months ago) was studied in 43 patients with coronary artery disease, 39 with valvular heart disease, and 5 with cardiomyopathy or myocarditis. All patients had undergone selective coronary arteriography and left ventricular angiography. Thallium-201 scintigraphy at rest proved a very sensitive method for detecting previous infarction, also clinically silent. Scintigraphy was more sensitive than a recent ECG. However, scintigraphy can give falsely positive results.
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Gustafson et al. (1981) studied this question.
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