After radiotherapy, a comprehensive examination can be done to find out the condition of the tumor, such as CT, MRI, PET-CT, and tumor markers. Usually 1 month after the radiotherapy session, a comprehensive examination will be performed to understand the tumor and assess the condition. A physical examination may be done to find out if there are any enlarged superficial lymph nodes. CT, MRI or PET-CT, blood routine, liver and kidney function, tumor markers, etc. will be improved to assess the efficacy of treatment and understand the condition from imaging and hematology. If from the imaging, it is found that the tumor shrinks or disappears, or the tumor markers are lower than before, it means that the radiotherapy is more effective. On the contrary, the effect is poor, and the treatment program needs to be changed in time if necessary. All tests should be performed under the supervision of a doctor.