68Ga-TCR-FAPI PET/CT Guided Precision Surgery for MTC

Inclusion Criteria: * Age between 18 and 75 years； * Diagnosed with MTC and have surgical indication based on preliminary evaluation; the tumor may be newly diagnosed or previously treated; * Expected survival of at least 12 weeks; * No major organ dysfunction (heart, lung, liver, kidney and other major organ include), acute or life-threatening status of infection; * Be willing and able to understand the research content and provide written informed consent/assent for the trial. Exclusion Criteria: * Have a history of imaging agent allergies; * Does not meet the PET-CT scan sedation requirements, or has contraindications for PET-CT examination; * Be pregnant or breastfeeding, or expecting to conceive or father children within the projected duration of the trial; * No surgical indication (i.e., no measurable disease, unresectable disease, or significant present of distant metastasis), refusing surgery or 68Ga-TCR-FAPI PET/CT-guided surgery.