XTR003 PET Radiotracer for the Detection of Viable Myocardium

Inclusion Criteria

• •1. 18-80 years old men and women.
• •2. The diagnosis and assessment of the disease meet any of the following criteria:
• •(a) Patients who meet the diagnostic criteria for NSTEMI are stable and require further imaging. (b) Patients with old myocardial infarction confirmed by medical history or imaging examination and now in the stable stage. (c) Patients diagnosed with total coronary occlusions based on coronary angiography showing anterior flow occlusion segment with TIMI grade 0 or coronary CTA examination showing complete coronary artery occlusion.
• •3. The rest 99mTc-Sestamibi (MIBI) SPECT imaging has been completed in the past month and no imaging technical issues were leading to poor image quality. Image indicated myocardial perfusion defect of ≥ 2 segments or total resting perfusion score (SRS) ≥4.
• •4. The patient has completed glucose-loaded 18F-FDG myocardial metabolic PET imaging in the last month and has not failed to diagnose because of poor image quality due to technical problems with the imaging, except for his own glucose regulation.
• •5. Patients who can communicate properly with the investigators, understand and follow the study requirements, voluntarily participate, and understand and sign the informed consent.