The ct is an examination tool that can diagnose a wide range of diseases by displaying ct values based on the tissues and organs of the body and the location of the lesion. 1. brain ct examination: through ct examination to check whether there is cerebral infarction, cerebral hemorrhage and brain tumor and other diseases. 2. Cranial ct examination: traumatic patients can receive cranial ct examination, which can observe whether there are obvious cerebral contusion, skull fracture and epidural hematoma, as well as subdural hematoma and subarachnoid hemorrhage and other symptoms. 3. lung ct examination: can check out tuberculosis, pneumonia, lung tumor and mediastinal primary tumor and other diseases. 4. Abdominal ct examination: it can check whether there are substantial organ lesions, such as primary tumors and metastases in the liver, gallbladder, spleen, pancreas and kidneys. 5. Vascular ct examination: it can check whether there is smog disease, aneurysm and arteriovenous malformation. In addition, ct examination requires higher requirements for instruments, so it is recommended that patients must go to regular hospitals to receive examination.