People are afraid of "radiation".
Maybe it’s because the atomic bomb was too lethal in World War II , or there are too many legends of terrible creatures around the Chernobyl Nuclear Power Plant in Ukraine.
In short, people have a psychological shadow on all "radiated" things. I always feel that after being "radiated", I may develop mutations or even deformities.
Commonly used medical examinations:
In our country, pregnant women are regarded as a "special group" and there are countless taboos handed down in daily life, not to mention being exposed to radiation during X-rays and CT scans.
is actually understandable. We are inherently afraid of
There is also a rumor among the people: If you take X-rays, it is best not to have children within three months.
So, do you really have to wait three months before you can get pregnant after being exposed to X-rays?
Will taking X-rays during pregnancy really affect the fetus? If you find out you are pregnant after taking X-rays or CT, do you really want to go? Do you want to have an abortion?
The answer is: Fake!
. Talking about radiation damage without the "dose" is a hooliganism.
Everyone is familiar with the saying, "To talk about toxicity without dose is just a hooligan." In fact, talking about radiation damage without dose is also a hooligan.
Regarding this point, many studies have confirmed that there is a threshold value for the adverse effects of X-rays on all mammals, including humans, babies, and even embryos!
Simply put, it is: and Not just exposure to radiation is harmful. Whether it is an adult or a fetus, the radiation received must reach a certain level to cause damage.
. What is the minimum dose of radiation that affects the fetus?
Regarding this question, the answer is very definite. Relevant guidelines issued by the American College of Obstetrics and Gynecology (ACOG) in 2017 pointed out that the impact and risk of X-ray radiation on the fetus mainly depends on two factors: (1) gestational age; (2) radiation dose.
That is, different gestational ages will correspond to different safe doses of radiation.
So, what is this dose? What is the minimum dose?
This data is also clear: (1) 0-2 weeks of pregnancy, the threshold of teratogenic dose is: 50-100mSV (hosif), the main effect is Fetal death; (2) 2-8 weeks of gestation, the threshold of teratogenic dose is: 200mSV (hosif), the main impact is congenital malformations; (3) 8-15 weeks of gestation, the threshold of teratogenic dose is: 60- 310mSV (Houseful), the main impact is intelligence and malformation; (4) 16-25 weeks of pregnancy, the threshold of teratogenic dose is: 250-280mSV (Houseful), the main impact is intelligence.
So, you can see that for all gestational ages, the minimum impact dose threshold is: 50mSV (Houseifer).
In other words: As long as the radiation dose does not exceed 50mSV (Hosv), there will be no damage.
. What is the radiation dose of X-rays and CTs in hospitals? How does it compare with the value of 50mSV?
Although the radiation dose values of X-rays and CTs in different hospitals will change slightly under different circumstances, the changes are very small. Under normal circumstances: an ordinary chest X-ray: 0.02mSV, a knee X-ray: 0.005mSV, an ordinary dental X-ray: 0.01mSV, a head CT: 2mSV, a chest CT: 8mSV
It is obvious that the radiation dose of these examinations, Compared with the 50mSV mentioned earlier, it is much lower.
To reach 50mSV, 2,500 chest X-rays must be taken continuously. Even chest CT, which has the greatest radiation, must be taken 6 times in a row. Who would do this?
is relieved to see this! ! Of course I can have a child!
Finally, we need to remind you that the use of radioactive iodine isotope treatment is contraindicated during pregnancy.
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