PET (Positron Emission Tomography) tracer with FSHR (Follicle-stimulating Hormone Receptor) targeting as well as preparation method and application thereof

The invention relates to a PET (Positron Emission Tomography) tracer which is obtained by polypeptide which is marked by positron imaging nuclide and has FSHR (Follicle-stimulating Hormone Receptor) targeting as well as a preparation method of the PET tracer. The invention also discloses application of the PET tracer in the field of tumor living body monitoring. With the adoption of the PET tracer, the blank in the field of FSHR targeting positron tracers and the technical problem of carrying out horizontal living body monitoring on FSHR are solved, and therefore, the PET tracer is particularly suitable for diagnosis and curative effect monitoring on tumors with high expression of the FSHR.