The molecular imaging technology of nuclear medicine is widely used in the diagnosis of tumors
neurological diseases
cardiovascular diseases and other diseases due to its non-invasiveness and high sensitivity. Fibroblast Activation Protein (FAP) is a type Ⅱ serine protease that is highly expressed in 90% of malignant solid tumors. A variety of FAP inhibitors (FAPI) have been developed to target FAP
most of which have nanomolar levels of FAP affinity as well as high FAP selectivity for positron emission tomography(PET)/computed tomography(CT) imaging of tumors. In addition to this
FAP is also highly expressed in activated fibroblasts
and some scholars have explored the value of FAPI PET/CT in non-tumor diseases. In this paper
we reviewed the progress of FAP-targeted molecular imaging probes and research in oncologic and non-oncologic diseases.