[68Ga] NOTA-SGC8 in the Staging of Bladder Cancer

The goal of this clinical trial is to test the imaging and diagnostic ability of \[68Ga\]-NOTA-SGC8 PET/MR in bladder cancer patients with different stages. The main questions it aims to answer are: * Tumor specific lighting ability of \[68Ga\]-NOTA-SGC8 in bladder cancer patients with different stages. * The safety of \[68Ga\]-NOTA-SGC8. Participants will be irrigated with \[68Ga\]-NOTA-SGC8 into the bladder for tumor imaging under PET/MR. The imaging performance of \[68Ga\]-NOTA-SGC8 on different stages of bladder tumors will be systematically evaluated by combining with pathological sections of patients. Urine accumulation and radioactivity distribution of \[68Ga\]-NOTA-SGC8 will be measured. The adverse events will be recorded.