How many times is chest ct equivalent to chest digital photography dr?

The above comments are really false. It is really that CT can't do more harm, including the correct explanations and suggestions for the harm. The false part is all parts including numbers. At present, the CT radiation of an adult's chest is about 200 to 350mGY, and the better the machine, the lower the radiation. The human body does not fully absorb radiation, and every part has an absorption coefficient. For example, the absorption coefficient of the chest is 0.0 17, which means that the radiation that a CT does harm to the human body is about 200-350 * 0.017 = 3.4-5.1msv, and the radiation that the human body gets from the sun and nature (technical term: background) every year, so don't treat CT as terrible. Don't worry about radiation when you should do it. Of course, it is wrong to take radiation seriously. For example, the absorption coefficient of gonad is 0.2, which is extremely fragile. Any dose of radiation will cause physiological damage and increase the risk of illness. However, although the research of Radiological Society of North America shows that the risk of adult patients with annual radiation dose below 65,438+000 msv has not been greatly improved, the risk of illness increases linearly after exceeding 65,438+000 msv, but is 65,438.