Xiaojing went to the hospital for X-ray because of lumbar problems. However, last week, she found that she had been pregnant for 2 weeks. Xiaojing was happy and tangled. She remembered that the X-ray radiation on the Internet would cause cancer and might cause fetal deformity. Thinking of this, Xiaojing didn’t know what to do. Can’t the baby in her stomach stay?
X-ray examination is widely used in clinical diagnosis. Compared with CT, ultrasound and other inspection methods, X-ray has the advantages of high value, short diagnosis time, low price and simple operation. The X-ray can not penetrate the human body at different wavelengths.
some people are very afraid of all kinds of X-ray related examinations, and they are afraid that radiation will damage their bodies. However, it needs to be clear that medical X-ray examination and computed tomography are currently widely used in the early diagnosis of cancer and bone fracture.
an expert group of the National Research Council of the United States said in a report on June 29, 2005 that although most medical X-ray exposure to human body may cause cancer, the risk of cancer is not large.
the latest report found that the radiation dose equivalent to about 1000 X-ray mSv would lead to cancer in 1 out of 100 people, while the average radiation dose of simple chest X-ray exposure was only 0.01msv, which was far from enough to cause cancer.
the International Commission on Radiological Protection (ICRP) Publication No. 90 summarizes and reviews the newly published experimental data of animals exposed to radiation before birth and the re evaluation data of biological effects of radiation on human embryos and fetuses. It is considered that the main organs and tissues of the fetus will not show any clinical functional damage when the absorbed dose is less than about 100 mGy.
in other words, if a woman receives more than 10 rads of X-ray radiation in the first two weeks of pregnancy, the embryo may be killed. But if the fetus can survive, radiation does not cause damage to the fetus. The deformities induced by radiation mainly occurred in the main organ formation stage. The radiation risk of organogenesis and early fetus is the highest, the second trimester of pregnancy is slightly less, and the late pregnancy is the least.
Moreover, only once X-ray examination, the dose of ionizing radiation is rarely greater than 50 mGy, and there are no reports of fetal malformation, growth restriction or abortion caused by radiation dose lower than 50 mGy, which can prove that a single X-ray examination has less damage to the fetus.
therefore, for a fetus with a dose less than 100 mGy, radiation exposure can not be regarded as a legitimate reason for termination of pregnancy, and children can be retained.
children are sensitive to X-rays, and ionizing radiation will produce corresponding potential risks to children. Therefore, scientific and reasonable chest X-ray examination should be used in clinical practice, which can strengthen the protection of children and effectively avoid radiation injury.
in children’s chest examination, motion blur is often caused by children’s uncooperative, crying and twisting, which will affect the diagnosis. Traditional X-ray machine is easy to cause image blur due to long exposure time, but Dr has great advantages. For example, Philips DR can reach up to 900mA, and the exposure time of children’s chest can be shortened to 0.007s. At the same time, the computer will automatically conduct digital processing at the same time of exposure. After 4 seconds, the image will be displayed on the monitor, and the radiographer can immediately judge whether the image meets the diagnostic requirements. It is not only fast and cheap, but also has low radiation dose, which is suitable for children’s X-ray examination.
at present, X-ray examination has become a common auxiliary technology in hospital diagnosis, and it is also a necessary item for many citizens’ annual physical examination. What should we pay attention to when doing this examination?
before performing this examination for the patient, we should understand the patient’s condition in detail, and if there is no need to do X-ray examination, we should try not to do it; for those pregnant women, as well as younger children, we should try not to use X-ray examination of abdomen and pelvis; if it is necessary to carry out the examination, we should protect the examinee with shielding protection The effect is good, especially pay attention to the protection of gonad, active bone marrow, breast and other positions of patients.
conclusion: from the discovery of X-ray to the present, X-ray examination has fully played its role in the medical field, showing its advantages, and has been recognized by the majority of medical personnel and patients. The application of radiation technology has its particularity. If we don’t pay attention to protection, it may cause radiation damage to human.
therefore, we should pay attention to the protection of the examinees and reduce all unnecessary exposure, which can prevent or reduce the potential harm of X-ray examination to the public and their descendants, and improve the effect of X-ray diagnosis.
reference:  Chi Haitao, Liu Hongtao, fan Haiming, et al. Common misunderstandings and protective measures in the understanding of X-ray [J]. China radiation health, 2005.  Li Jiejun. Views on radiation protection misunderstanding in medical X-ray diagnosis and treatment [J]. China radiation health, 2015  Mou Li, Peng Yan, Ma qiongying. Application selection of chest X-ray and CT examination in children [J]. Chinese Journal of pulmonary diseases, 2018