[Thallium-201 myocardial scintigraphy]

Area of Science:

• Nuclear Medicine
• Cardiology
• Diagnostic Imaging

Background:

• Coronary heart disease (CHD) remains a significant health concern.
• Accurate diagnosis of myocardial lesions is crucial for effective patient management.
• Evaluating diagnostic tools for CHD is essential for improving patient outcomes.

Purpose of the Study:

• To assess the diagnostic efficacy of Thallium-199 chloride (199Tl-chloride) scintigraphy in patients with suspected coronary pathology.
• To compare the performance of 199Tl-chloride with established methods, such as Thallium-201 chloride (201Tl-chloride).
• To determine the utility of 199Tl-chloride for identifying chronic CHD and acute myocardial infarction.

Main Methods:

• Myocardial scintigraphy was performed on 59 patients using 199Tl-chloride.
• Patients were diagnosed with chronic CHD (36), acute myocardial infarction (7), or had no signs of coronary pathology (16 controls).
• Results were analyzed based on clinicoinstrumental investigations.

Main Results:

• Scintigraphy with 199Tl-chloride demonstrated a 92% sensitivity in detecting coronary heart disease.
• The diagnostic performance of 199Tl-chloride was found to be non-inferior to that of 201Tl-chloride.
• The study identified 199Tl-chloride as a valuable tool for diagnosing myocardial lesions.

Conclusions:

• 199Tl-chloride scintigraphy is a highly sensitive method for diagnosing coronary heart disease.
• This radionuclide is effective in detecting cicatricial and necrotic myocardial lesions.
• 199Tl-chloride can be recommended as a reliable diagnostic agent for various cardiac conditions, comparable to 201Tl-chloride.