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[Single-photon emission computed tomography with 201Tl in the diagnosis of ischemic heart disease]
Insights
Single-photon emission computed tomography (SPECT) offers superior detection of coronary heart disease (CHD) perfusion defects compared to plane scintigraphy. Combining both methods is recommended for enhanced clinical diagnosis of CHD.
Area of Science:
- Cardiology
- Nuclear Medicine
- Diagnostic Imaging
Background:
- Coronary heart disease (CHD) diagnosis relies on accurate imaging techniques.
- Traditional plane scintigraphy has limitations in detecting subtle perfusion defects.
- Single-photon emission computed tomography (SPECT) offers advanced tomographic visualization.
Purpose of the Study:
- To compare the diagnostic efficacy of SPECT versus plane scintigraphy in patients with CHD.
- To evaluate two different SPECT rotation techniques (360 and 180 degrees).
- To assess the utility of these imaging modalities in various CHD presentations, including acute myocardial infarction, angina pectoris, and postinfarction cardiosclerosis.
Main Methods:
- Study included 136 patients with diagnosed CHD and 26 healthy controls.
- All participants underwent both plane scintigraphy and SPECT.
- SPECT imaging utilized gamma-chamber rotation at 360 and 180 degrees for comparison.
Main Results:
- SPECT detected focal perfusion defects in 36/39 acute myocardial infarction patients vs. 30/39 by scintigraphy.
- Perfusion alterations were identified by SPECT in 91.6% of angina pectoris patients, compared to 75% with scintigraphy.
- In postinfarction cardiosclerosis, SPECT revealed defects in 38/42 patients, while scintigraphy detected them in 31/42.
Conclusions:
- SPECT demonstrates higher sensitivity and accuracy in diagnosing perfusion defects across various CHD manifestations.
- The study highlights the significant advantages and importance of SPECT in CHD diagnosis.
- Combined use of SPECT and plane scintigraphy is recommended for comprehensive clinical practice.
Abstract:
One hundred and thirty-six patients with CHD were examined by plane scintigraphy and single-photon emission computer-aided tomography (SPECT). The control group comprised 26 healthy persons. Two SPECT techniques were compared (gamma-chamber rotation at 360 and 180 degrees). In acute myocardial infarction, focal defects of perfusion were detected by SPECT in 36 out of 39 patients, those by plane scintigraphy in 30 patients. In angina pectoris patients, perfusion alterations were detected by SPECT and scintigraphy in 91.6 and 75% of cases, respectively. During tomographic examination of patients with postinfarction cardiosclerosis, the perfusion defects were revealed in 38 out of 42 patients, whereas during plane scintigraphy, such alterations were detected but in 31 patients. The advantages of SPECT and its high importance for diagnosing different patterns of CHD are discussed. It is recommended that SPECT and plane scintigraphy can be used combined in clinical practice.