Having said that, it is likely that many people will associate this kind of equipment with radiation. We firmly believe that as we all know, radiation is particularly harmful to the body itself. Most people think that if such examinations are carried out frequently, it is very easy to cause radiation damage to the body and increase the probability of illness. This view is very wrong.
For example, radiation can be divided into non-hydrolytic radiation and ionizing radiation. To put it bluntly, non-hydrolytic radiation has no power engineering function, and computer mobile phones will not cause much harm to the body.
However, the radiation of power engineering is relatively high, which will also cause somatic cells in the body to get sick, which is very serious and prone to cancer risk. For example, the radiation of image diagnosis examination in hospital outpatient department, that is, power engineering, is different, and the radiation of power engineering formed by different examination new projects is also different, so this problem also needs to be viewed objectively.
X-ray, B-ultrasound, CT, nuclear magnetic resonance, which radiation is greater? 0 1 X-ray examination
X-ray examination mainly uses X-rays to penetrate the patient's body and produce images, most of which are plan views.
According to the investigation and analysis, it is found that the amount of X-ray radiation used each time is about 0.02~0. 1mSv. If we don't have X-ray examination in our daily life, our radiation is similar. 2.0~3.0mSv will not cause much harm to the body.
The benefits of this kind of inspection are also very many. In the case of inspection, it is relatively more convenient and the price is very cheap. X-ray takes several perspectives to identify the interference of shading mechanism and mutual accumulation and concealment, and the inspection results are not significant.
02, CT examination
CT inspection is mainly based on X-ray penetrating steam, and there is a very obvious difference between hydrogen and X-ray inspection.
Three-row spiral CT examination used in clinical medicine is to divide the area that patients must examine into countless volumes. This kind of examination is more accurate, and some early ailments can be found immediately.
During this examination, the radiation dose is 10 times higher than that of X-ray, and the radiation dose caused by general chest CT examination is about 2~55mSv. The radiation dose of low-dose spiral CT examination of breast is about 0.2~0.5mSv, which is within the range that everyone can bear and will not cause too much harm to the body.
03.b ultrasound examination
For example, B-ultrasound mainly uses the reflecting surface of sound wave frequency. According to the harm of different echoes to instruments and equipment, there is no radiation when doing B-ultrasound. For some pregnant mothers during pregnancy, this kind of examination can also be carried out.
This kind of examination can observe the activity and function of internal organs, and is not limited by its three-dimensional imaging level. It is also recognized as the first choice for biliary system diseases.
04. Magnetic vibration inspection.
Binomial magnetic vibration inspection mainly refers to the principle of radio wave imaging, and this small box mainly refers to the basic principle of hydrogen. The key is to give the body an electromagnetic field. In this electromagnetic field, the hydrogen nucleus will gradually exercise regularly, and it will look like it after being solved by the computer. Moreover, this magnetic vibration has no radiation and is not easy to cause too much harm to the body.
This kind of examination results are clear, and the content of image information can be established for each part, which is more beneficial for doctors to master.