Will there be any radiation residue after X-ray scanning of items?

There will be no radiation residue when items undergo X-ray scanning.

X-ray scanning will not cause radioactive contamination. After the scanning is completed, no radioactive materials will remain on the luggage, and the scanned food will not cause harm to human health. In addition, some fresh packaged foods are sterilized by radiation such as gamma rays to help keep the food fresh without any residue.

X-ray security inspection equipment is a common security inspection equipment used to detect prohibited items in luggage and packages. It emits X-rays to scan the items, and then uses a computer to analyze the image to determine whether it is safe. The amount of radiation emitted by X-ray security inspection equipment is very small, and its impact on the human body is almost negligible. Just like when we bask in the sun, although we will receive a certain amount of radiation, it will not have much impact on our health.

Applications of X-rays

X-rays are used in medical diagnosis, mainly based on the penetration, photosensitivity and fluorescence effects of X-rays. Because X-rays are absorbed to varying degrees when passing through the human body. For example, if the amount of X-rays absorbed by bones is greater than that absorbed by muscles, then the amount of X-rays passing through the human body will be different. This will carry information about the density distribution of various parts of the human body. Information, there is a big difference in the intensity of fluorescence or photosensitivity caused on the fluorescent screen or photographic film, and shadows of different densities are displayed on the fluorescent screen or photographic film.

Because X-rays have strong penetrating power, in addition to being used in medicine, X-rays are also used in industry for industrial flaw detection. X-rays can excite fluorescence, ionize gases, and sensitize photosensitive latex. Therefore, X-rays can be detected with ionization meters, scintillation counters, and photosensitive latex sheets.

Reference for the above content: Baidu Encyclopedia—X-ray