What harm does the security machine do to people?

Many people have to fly frequently because of their work needs. Once you fly, you naturally need frequent security checks, which makes many people worry about whether the radiation will be too large and cause harm to your body. In fact, you don't have to worry about this at all, because the security doors at airports and subways do little harm to the human body, even pregnant women don't have to worry too much, and passing the security check will not affect their children.

The security X-ray machine only allows people who fail to check things to pass through the security gate. The relevant personnel only need to accept the customs officers sliding on their bodies with metal detectors, put their luggage into the cargo scanning X-ray machine, and take back their luggage and leave after the inspection.

Such a set of safety measures has recently been considered to be exposed to leaked radiation, which affects human health.

Professor Jiang, director of the nuclear medicine department of Sun Yat-sen Memorial Hospital of Sun Yat-sen University and vice president of the nuclear medicine physician branch of the Chinese Medical Association, believes that worry is understandable, but it is completely unnecessary.

He said that the subway security inspection machine is the same as the security inspection equipment at the entrances and exits of railway stations, airports and important departments, including security doors, hand-held metal detectors and object inspection X-ray machines, which only belong to metal detectors rather than X-ray machines. X-ray machine used for machine inspection of objects uses X-rays to pass through the objects to obtain X-rays, which are displayed on the computer screen through computer processing to identify images and evaluate the safety of the objects.

The radiation at the entrance and exit of the X-ray machine is slightly larger, but it is still safe. Many people are worried that although the X-ray machine only detects the baggage of the plane, it is not closed, and there will inevitably be radiation leakage. Recently, some media reported that the X-ray machine for on-site inspection of articles found that the radiation data obtained from the machine were similar to those measured in the natural environment at a distance of 5 ~ 10 cm from the machine surface. The values measured at the baggage entrance and exit of the machine are slightly higher, about 10cm. Therefore, there is basically no radiation leakage on the side of the X-ray machine, and the farther away from the security inspection machine, the smaller the radiation leakage.

At the same time, he also said that according to China's "Basic Standards for Ionizing Radiation Protection and Radiation Source Safety", a person standing at the entrance and exit of the security inspection machine is about 10cm, and it will reach this amount without moving for 52 days.

Moreover, whether radiation has any influence on human body mainly depends on the amount of radiation she receives at a time, the total amount and time of radiation received, and everyone's physical quality. Therefore, even if the radiation of the security inspection machine has an impact on the human body, it only has an impact on the staff who work long hours, and has little impact on people passing by.