GLP1R and multiple endocrine neoplasia type 1: The sensitivity of 68Ga-DOTA-exendin-4 PET/CT combined with MRI (92.3%) is significantly higher than MRI (38.5%), and PET/CT (84.6%) alone, GLP-1R molecular imaging combined with MRI is a feasible method to detect the lesions of MEN-1 patients and guide the surgical treatment.