The Value of 68Ga-FAPI PET/CT in Preoperative Evaluation of Thyroid Cancer with Lymph Node Metastases

This study is testing whether a special type of PET/CT scan using a tracer called 68Ga-FAPI can better detect how far thyroid cancer has spread to nearby lymph nodes before surgery. The goal is to help surgeons plan more precise operations. **You may be eligible if...** - You have been diagnosed with thyroid cancer that has spread to lymph nodes (confirmed by biopsy or imaging) - You are between 16 and 80 years old - You are willing to follow all study procedures **You may NOT be eligible if...** - You have serious heart, lung, bone marrow, liver, or kidney problems - You have a bowel perforation or complete intestinal blockage - You are pregnant, possibly pregnant, or breastfeeding - You are unable or unwilling to follow the study procedures Talk to your doctor to see if this trial is right for you.