This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Acute coronary syndrome, Subject name: Medicine
Which of the following is the best test for ble myocardium after MI? 
Select and explain. 
A. Thallium scan, B. MUGA scan, C. MDCT, D. Stress Echocardiography
A: Thallium scan
Answer: A: Thallium scan 
Explanation: A thallium scan is a class I indication for Risk assessment, prognosis, and assessment of therapy after STE acute myocardial infarction and can be used to determine the following : 1. Rest or exercise RV/LV function 2. Presence/extent of stress-induced ischemia 3. Detection of infarct size and residual ble myocardium 4. Diagnosis, prognosis, and assessment of therapy in patients with unstable angina/NSTEMI