If you need to have a CT scan, the radiation is about the same as taking a flight.
In fact, CT scanning, like MRI, is widely used in clinical medical examinations and has its advantages and application value. In terms of CT scanning of the cranium, most of the cross-sectional scanning (also known as axial scanning), the main indications are brain tumor, cerebrovascular accident, craniocerebral trauma, intracranial inflammation, congenital craniocerebral malformations, postoperative and radiotherapy review, as well as some of the substantive brain lesions, etc.
The CT scanning of the cranium has been widely used in clinical medical examinations, like MRI examinations, as well as its advantages and application value.
So does the radiation from CT examinations have a significant impact on the human body? In the early days when CT equipment was first introduced, it was operated entirely according to the manufacturer's instructions, and at that time the radiation dose for a single examination amounted to 15.8 millisieverts. Nowadays, the radiation dose for one examination has been reduced to 0.1 to 0.2 millisieverts, that is to say, the minimum amount of radiation, which is already about 1/150th of the original amount. Ordinary people exposed to the air, a year's radiation reaches 3 to 5 millisieverts, now do a checkup, the radiation dose is only 0.1 millisieverts, which is not too much different from the radiation of a long trip by plane, it will not have an effect on the body. The lower radiation dose will have an impact on the final imaging, for the doctor may not be so "good-looking" film, but will not affect the final diagnosis.
Experts said, we do not need to CT may cause cancer of the claim of panic or fear, sick, really need to do CT examination, but also must be done, only then can accurately and quickly diagnose the disease, conducive to the early treatment of symptoms, early recovery of health. Some patients who are afraid of CT examination will not be able to diagnose the disease accurately, and there is no way to carry out scientific treatment, and the only one who will suffer is themselves. As long as we adhere to the scientific and rational use of CT examination, there is absolutely no need to panic.