How to carry out x-ray machine room protection monitoring

Medical X-ray on the human body in the end there is no harm? □ correspondent Shanren intern Bei Bei reporter yu yu recently, guangzhou, shenzhen radiation protection experts at the same time called for children's annual physical examination, chest X-ray a should be called off as soon as possible. From this, has been quite mysterious radioactive examination instantly become the focus of attention. Many readers have called to write to this reporter to ask: X-ray is harmful to the human body? X-rays will cause cancer after a few times? In response to these questions, the reporter interviewed Associate Professor Guo Liang, director of the Department of Imaging Medicine of the First Affiliated Hospital of SUU. The staff of the "X-ray storage device" just into the SUU hospital imaging building, the reporter found that the staff here in the chest with a "small tube". It turns out that this small tube called "radiation measurement tube", is specifically used to measure the amount of X-ray ingested by professional staff every day, it will be taken down every once in a while, to measure the staff ingested X-ray dose is not excessive. Director Guo told the reporter that the results are usually within the normal range. Professionals like him who have worked for many years are "qualified" for every measurement. Guo Liang said that in modern medicine, X-rays can be said to be prevalent, showing its importance everywhere. Like CT, nuclear magnetic **** vibration, interventional radiology and other people are no stranger to the radioactive examination, constantly used in clinical medicine, greatly improving the diagnosis of diseases. Their daily work is through the X-rays this pair of penetrating "eyes" to check the patient's body of all kinds of abnormalities. Taking a film is equal to watching an hour of television when the reporter asked with a puzzled face, frequent acceptance of medicine in the X-ray examination will make the possibility of cancer increased, Guo Liang first listed such a set of data. He said, a filming of the body's X-ray dose ingested by the equivalent of watching 1 hour of television ingested; and chest X-ray dose equivalent to 1.5 times the filming; if you want to talk about the harm that is to do a chest X-ray damage is equal to smoking 3 cigarettes. If it is said that receiving medical X-rays is prone to cancer, then aren't medical professionals like them who have been working for years and years surrounded by such equipment and technology the first victims? The values obtained from the "radiometric tubes" that they wear every day at work are generally within the normal range. In other words, the claim that "a few X-rays will cause cancer" lacks scientific basis and cannot be substantiated. CT once a week will not affect the health of everyone knows that X-rays on biological cells have a certain role in killing and destroying, excessive exposure to X-rays will affect physiological functions, resulting in chromosomal abnormalities, leading to the occurrence of cancer. However, a moderate amount of exposure will not affect human health. The dose of X-rays used by medical personnel for fluoroscopy and photography is very small and is limited to a safe dose. In particular, an occasional chest X-ray, a gastrointestinal examination, a bone X-ray or an angiogram will not cause adverse reactions. Moreover, the X-ray dose used for filming is not completely absorbed by human beings, most of it is penetrated from the human body, and only a very small part of it is absorbed by the human body, if we want to say a specific value, that is, what is really absorbed by the human body is only a few ten-thousandths of the dose used, or even less than that. And now, such as the First Affiliated Hospital of SUU and other major hospitals in Suzhou, the use of radiological examination equipment has been replaced by digital film (CR) and direct digital imaging (DR), the amount of radiation than the original and reduced a lot, accounting for only 1/7 of the original, so exactly, the normal human body to do a CT once a week is absolutely not affect the health of the. Director Guo emphasized that medical X-rays for people to check and treat, never affect the health of people, so the public do not have to have any concerns. Chest X-ray canceled the main reason for the physical examination of elementary school students to cancel the chest X-ray project, Guo Liang believes that the chest X-ray using a large dose of radiation is an aspect, but I'm afraid that the main reason is still because the chest X-ray relative to the low resolution of the film, from the beginning to the end of the diagnosis is only by a physician, the diagnosis of accuracy can only be based on the level of this physician's personal level, resulting in a relatively high rate of error, and also not like filming! And unlike radiographs, it is not possible to keep the data, which is good for follow-up. Who should not do X-ray examination Guo Liang also pointed out that, although the body has discomfort is difficult to determine the cause of the disease, you can do X-ray examination to reassure themselves. But everything has two sides, radiological examination is no exception, some people do X-ray examination should be slightly more careful, for example, pregnant women in the third month of pregnancy should not do X-ray examination, because this stage of the fetus is not yet formed, pregnant women, if too much to receive X-rays, it is easy to cause fetal mental retardation or microcephaly, resulting in the incidence of cancer after birth increased. In fact, X-rays are ubiquitous in our daily life. There are X-rays in TVs, computers, cell phones, microwave ovens, and even the sunlight and moon rays that nature has bestowed on mankind. And some objects in daily life X-ray hazards can not be ignored, for example, do not let small children too close to the microwave oven is working at home; selection of building materials should be carefully selected, such as the larger radiation granite should be used with caution; usually do not watch TV or use the computer for long periods of time, if the work required to do as much as possible to work for one or two hours to give themselves a break for ten minutes.