(High score) Can the harm of CT radiation to human body be detected? What tests have you passed?

The harm of CT to human body is mainly caused by X-rays, mainly external irradiation. A large dose (above 1Gy) once or for a short time will cause acute radiation sickness, which can be divided into three categories: brain radiation sickness, intestinal radiation sickness and bone marrow radiation sickness. You have a CT scan of pelvis and lumbar spine, and there will be no damage. According to "Basic Requirements for Radiation Protection of Medical Exposure" (GBZ 179-2006), the dose guidance level of X-ray CT examination for adult subjects is 35mGy for lumbar spine and 25mGy for abdomen, which will not harm you. If you really want to check chemistry, you can check blood routine. If the damage is visible, white blood cells and/or platelets will decrease. ( 1Gy= 1000mGy。 )