Clinical Application of Al18F-NOTA-FAPI-04 PET/CT or PET/MRI Imaging in Malignant Tumor,Cardiovascular or Immune Disease

This study is evaluating how well a PET/CT or PET/MRI scan using a new imaging tracer (Al18F-NOTA-FAPI-04 — which targets a protein called FAP found in cancer tissue and areas of inflammation) can detect tumors, cardiovascular disease, and immune conditions. Researchers are comparing it to standard CT and ultrasound results to see if it provides additional useful information. **You may be eligible if...** - You are 18 or older - You have had a routine health check within the past 3 months (at minimum a chest X-ray or CT and abdominal ultrasound) with no major diseases detected, and are considered healthy **You may NOT be eligible if...** - You have had frequent radiation exposure recently (CT/PET scan within the past 1–3 months, depending on type) - You are pregnant or breastfeeding - You have conditions that make radiation exposure inadvisable Talk to your doctor to see if this trial is right for you.