What this Trial Is About

Researchers are evaluating the usefulness of two imaging techniques, 18F-AlF-FAPI PET/CT and 18F-FDG PET/CT, for diagnosing and staging orbital tumors. The study focuses on comparing how well these scans detect primary and metastatic lesions in patients with suspected or newly diagnosed orbital neoplasms. The goal is to assess the accuracy of these imaging methods for better diagnosis. Participants undergo both 18F-AlF-FAPI PET/CT and 18F-FDG PET/CT scans around the same time as part of their initial evaluation. The amount of tumor detected is measured using the maximum standard uptake value (SUVmax). Researchers visually interpret the scans to count the number of metastatic lesions detected by each technique. They then calculate and compare sensitivity, specificity, and overall accuracy of both imaging methods. During the study, participants are monitored until the study completion, averaging about 6 months. Researchers collect and analyze data on diagnostic accuracy throughout this period. The study involves informed consent and follows ethical guidelines to protect participant rights and safety.

Evaluating the Usefulness of 18F-AlF-FAPI PET/ CT in Orbital Neoplasms