Traditional Culture Encyclopedia - Photography and portraiture - What other uses do discarded X-rays and CT films have?
What other uses do discarded X-rays and CT films have?
X-ray film is a photographic film designed for X-ray photography. It can be roughly divided into direct photography (intensifying screen type and non-intensifying screen type) and indirect photography.
X-rays are mainly divided into medical X-rays and industrial X-rays according to their uses. Medical x-rays use light blue film base to prevent halo. When in use, you can also add a fluorescent sensitizing screen to stimulate fluorescence shooting, and the effect is better. Industrial X-rays need particles, low fog, Gao Fancha, high density and high resolution.
In addition, there are radiation measuring films for measuring radiation dose, and in a broad sense, they also include films for X-ray photographic reproduction. Usually, both sides of the film base are coated with emulsion for direct photography to improve the sensitivity and contrast.
X-rays generally have the following characteristics:
1, high resolution, improving the ability to identify defects;
2. High sensitivity to X-rays, especially medical X-rays, is required to minimize X-ray radiation and prevent human body from being harmed;
3, convenient use and simple processing;
4. The film should be evenly coated without stains, so as not to be confused with trapped images.
X-ray film must be coated with high-sensitivity Gao Fancha blind color emulsion on both sides of the film base, so as to improve the utilization rate of X-rays and enhance the image contrast.
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