How much harm will taking 40 x-rays at a time do to the human body?

Take a chest X-ray. When radiation irradiation is carried out in the inspection area, the irradiation rate is about 160 millisieverts (unit for measuring radiation)/hour, which is about 0.045 millisieverts/second. Take chest rib fracture as an example, it takes about 0.5 seconds to take a chest X-ray, so the patient has to bear about 0.023 millisieverts of radiation. According to the standards formulated by the International Commission on Radiological Protection, the total radiation risk is 0.0 165/ sievert, that is to say, the probability of cancer will increase by 0.0 1 65 for each dose of radiation received by the human body (1sievert = 1000 millisieverts). Therefore, 40 x-rays at a time will cause 0.92 millisieverts of radiation to human body, increasing the cancer risk by 0.0000 15 18.