Can I do CT during pregnancy and lactation?

At present, X -rays, CT, etc. have become conventional inspections.In everyone’s cognition, there is no particularly big problem for normal people to do a check. However, if it is a pregnant woman, then CT and other examinations are a "demon", which is far from how far it can be.Even if you are sick, you need to do a chest X -ray and other examinations.After receiving a ray examination, some women find that they are pregnant, or they have to accept X -ray camera due to disease reasons during pregnancy. In this case, the friends around her and even many doctors told her that being ill during pregnancy will cause fetal malformations.It is recommended to take early fetal.At this time, pregnant women themselves will be very tangled and sad. After all, no one wants to have an unhealthy child, even if there is a tenth tentilament probability, it will destroy a lifetime, so they can only accept the advice of abortion, and the body and mind will suffer.Double blow.In addition, there are many articles on the Internet to remind that X-rays and CT are made, and it is best to get pregnant after 3-6 months; and it cannot be taken during breastfeeding.EssenceSo, is there a scientific basis for these rumors?The following is a detailed answer to you, mainly based on the 2016 American Obstetrics and Gynecologist Society (ACOG).

First of all, let’s take a look at the dose unit of ionizing radiation.

During the diagnostic needs during pregnancy, the radioactive diagnostic measures that may be accepted are X -rays, ultrasound examination, nuclear magnetic resonance, and CT scan.Among them, X -ray films are the most common and most likely to cause the tangles of pregnant women and their families. Everyone generally has a consensus: believes that X -ray irradiation will hurt the fetus and even cause abnormal tires.Abortion.Indeed, high -dose ion rays, such as the X line, can cause many serious damage to the fetus, such as miscarriage, fetal growth disorders, cerebellar deformities, intellectual development disorders, and increase the risk of malignant tumors in children.However, not speaking doses is only "hooligan".Just like it is known that the plane crashed, the probability of survival is almost 0, and the accident in the car is sparse, and it is rarely killed directly.In this way, the risk of taking a plane is extremely great, and then the plane should be banned.In fact, compared to the chance of occurrence, the chance of aircraft crashes is very small, so in fact, airplanes are the safest transportation in the world.

In the same way, for radioactive examinations, according to the clinical guidance of the American Radiation Society, the American Obstetrics and Gynecology, and the US Food and Drug Administration, most diagnostic radioactive examinations will not cause fetal damage.The American Radiation Society clearly pointed out that the illumination dose of a single -diagnostic X -ray examination could not reach the dose that could cause embryo or fetal damage at all.

Data show that the X -ray camera accepted by the fetus will not have a healthy impact on the fetus if the dose is lower than 50mgy (5000mrad).The fetus can only occur with health problems that are more than 100mgy (10000mrad), and it is most sensitive to 8-25 weeks of pregnancy.The dose of 100mg will not be used in the usual diagnostic X -ray camera. If it is a tadpole enema examination, the small intestine CT imaging, or radioactive therapy (radiotherapy), it is possible to reach such a high dose.

According to data from the US Radiation Association and the Obstetrics and Gynecology Association, pregnant women receive the irradiated dose in the abdomen when they accept a single chest X-ray camera 0.02-0.07mrad.According to what just said, it is higher than 50mgy and higher than 5000mrad to cause fetal damage.The amount of irradiation of a single-abdomen X-ray flat tide fetus is 100mrad. The lactating target of the breast molybdenum target checks the amount of irradiated in the fetus 7-20mrad.During the above examinations, there will be protective measures such as lead plates, lead apron and other protective parts such as the abdomen of pregnant women, which will reduce the irradiation dose of the fetus. Therefore, these tests will not cause damage to the fetus.Risk increases can also be ignored.Don’t worry about teratogenic or harmful to the fetus, but choose to refuse or abortion.

The amount of irradiation of the fetal vein photographic fetus may be greater than 1000mrad, and the pelvic CT scan the fetus can be reached as high as 1500mrad.The cause of the disease, or the trauma does need to be done.

Summary: 1. X -ray irradiation below 5000m RAD will not cause fetal injury and will not cause malformation.Therefore, a single X -ray examination for pregnant women is harmless, whether it is teeth, skulls, limbs, chests, or abdomen.Do not abandon diagnostic radiological examinations because they are afraid of risks such as tears. Of course, if there are other alternative examinations, such as ultrasound or nuclear magnetic resonance, it should be selected first.

2. If a pregnant woman needs to be irradiated multiple times, the total radiation dose of the fetus may be calculated to measure their safety.

3. For radioactive contrast agents, such as venous pelvis angiography, chest or abdomen enhancement CT, vascular angiography CT, small intestine angiography, etc., pregnant women should try to avoid it.Only by ensuring that the benefits of use are far greater than possible damage to the fetus.

4. After finishing X-ray, CT, etc., you need to wait for March to June to consider pregnancy. This is not scientific.

5. After finishing X -ray, CT, etc., breastfeeding needs to be suspended for 24 hours. This is not scientific.In addition, it is traditional to stop breastfeeding for 24 hours after the use of iodine in the vascular use of iodine, but the recent guide proposes that even if the iodine -made agent is used, breastfeeding does not need to be stopped.

Of course, pregnant women must not be unscrupulous because they are harmless to the fetus because they do diagnostic radiation examinations. They do not tell the doctor when they are medical, because they are not only a problem with the photography, but also the problem of medication. It is also necessary to consider the impact on the fetus.In addition, I have made several films to check that I should remember it in order to calculate the total amount of irradiation and avoid unnecessary inspections.

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