In life, many people are resistant to CT scans.
@七总: I think doctors nowadays don't know how to see a doctor without CT.
@橘子妈: Yesterday I took my mother for a check-up, and the doctor said that I would enhance the CT and look more carefully, but my mother had to make a fuss in the hospital and said that it would cause cancer, and in the end I didn't see anything.
@等吖等: It's just that there is radiation! It's all to comfort those who don't understand, otherwise no one will go to the doctor, naïve!
@一缕阳光: Isn't the CT scan a bit overrun? I was even advised to do it for a cough before, which is very inexplicable.
Today, Xiao Jiu will take you to have an in-depth understanding: CT examination, as a kind of examination with radiation, is it really so scary?
1. Why do doctors always recommend CT scans when I go to the hospital?
CT examination has the characteristics of short examination time and high accuracy, and the cause of discomfort can be clarified through examination, and misdiagnosis and missed diagnosis can be avoided. In addition, some patients hide their past history during the doctor's consultation, which is likely to lead to a doctor's error in judgment. Through the examination, you can get an authoritative and rigorous report in a timely manner, which helps the doctor to judge the condition accurately and objectively.
In addition, CT is a very widely used examination, which can be performed on almost any part of the head and toes, except for special organs such as the gastrointestinal tract. Compared with other examinations, CT examination has much greater advantages and is also very convenient to examine, so doctors generally recommend CT examination.
2. Is it credible not to do CT if it is not necessary to increase the risk of cancer?
In recent years, there have been many negative rumors about CT scans on the Internet, saying that the scans are highly radiated and increase the risk of cancer in the body. It has even been said that having an extra CT done once a year increases the risk of cancer by 43%. This makes many people who have undergone examinations into confusion and worry, on the one hand, they are worried that they will delay their treatment if they do not have examinations, and on the other hand, they are worried that they will have cancer due to examinations.
This statement comes from a study in Nature Medicine that collected data from more than 940,000 participants aged < 22 years who underwent CT scans in multi-country cohorts and found a positive association between CT dose accumulation and the risk of all hematologic malignancies. For every 100 mGy radiation dose, the risk of systemic hematologic malignancies increases by 96%, and even if 10~15 mGy is received at a low dose of radiation, the risk of non-Hodgkin lymphoma and mature B-cell tumors is increased.
In the ongoing analysis, it was found that each additional CT scan was associated with a 43% increase in the overall risk of haematological malignancies, and specifically, an additional CT scan was associated with a 42% increase in the risk of lymphoid malignancies and a 48% increase in the risk of bone marrow malignancies. In terms of absolute risk, 1.4 of the 10,000 children who undergo CT scans are expected to have 1.4 cases of cancer after 12 years.
Actually, the purpose of the study was not to stop people from doing CT. Rather, it is to warn pediatricians to be cautious about performing CT examinations in children, and at the same time to optimize the dose of CT examinations to minimize the health risks of children.
For the average person, CT for medical examination, as long as the dose does not exceed 100mGy/year, does not pose a health risk, and there is no need to worry too much about this.
The amount of radiation brought by a CT examination to the body is far lower than the national limit, and 1~2 examinations a year are also within the safe range, so there is no need to worry too much about this, let alone blindly reject the CT examination because of radiation, so as not to delay the time to find the disease.
3. What should I pay attention to during CT examination? Keep these four points in mind
Although it is not a great risk to your health if you do these things at a normal frequency, you can further reduce the damage to your body if you do these things well during the examination.
1. Do a good job of protection
Protective measures should be taken during the inspection, especially for some sensitive parts.
2. Fully cooperate during the inspection
During the process, it is necessary to fully cooperate with the doctor's instructions to avoid repeated examinations that bring greater radiation to the body.
3. Drink plenty of water after the examination
After the examination, you should pay attention to drinking plenty of water, and you can eat more foods rich in vitamin C after returning home, which is good for accelerating the metabolism of radiation.
4. Observation in the rest area
Note that you should not leave immediately after the examination, and you should observe the observation area for about 30 minutes, and inform the doctor in time if you have fever, nausea and other discomforts.
Most of the diagnostic imaging tests that doctors recommend to patients have more advantages than disadvantages, and blind refusal to perform examinations may lead to misdiagnosis, missed diagnosis, and even the cost of life.
Resources:
[1] "How Widespread Are CT Scans? Doctors Finally Tell the Truth". DrX says 2024-02-05
[2] ""Every time CT is done, the risk of cancer increases by 43%" rushed to the hot search! Popular Science China 2024-03-14
[3] "CT scan can cause cancer" is exaggerated! Tencent Medical Dictionary 2022-02-24
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