Analysis and Outlook on the Use of ^99m Tc-FAPI SPECT/CT in the Diagnosis of Primary and Metastatic Lesions of Cholangiocarcinoma

^99mTc-FAPI SPECT/CT holds significant potential as a valuable tool for the diagnosis and staging of cholangiocarcinoma, serving as an effective complement to existing imaging methods. Despite challenges such as lower spatial resolution and the need for standardized protocols, the modality offers economic and logistical advantages. Further well-designed, large-scale studies are required to validate these findings and support broader clinical adoption.