X-ray filter

X-ray filter

An X-ray filter is a device that is used in X-ray machines to reduce radiation inhomogeneity. It is used to separate scattered X-rays from the main beam.

The basic principle of an X-ray filter is that it allows only a certain amount of X-ray energy to pass through, while the rest of the energy is scattered or absorbed. This improves the quality of the resulting images and reduces background noise.

X-ray filters can be made from various materials, such as gold, silver, titanium and other metals. They can have different shapes and sizes, depending on the type of X-ray machine and its characteristics.

The use of an X-ray filter allows you to improve the quality of the resulting X-ray images. It can also be used to improve image sensitivity and contrast, as well as reduce background noise and increase exposure time.

In general, the X-ray filter is an important element in the operation of X-ray installations. It improves image quality and increases the efficiency of X-ray equipment.

**X-ray filters** are special devices used in X-ray devices to reduce inhomogeneities in their radiation. These filters help separate wanted radiation from other types of radiation, such as scattered light, shadows and interference. They are used to improve the quality of X-ray images, allowing more accurate diagnosis of diseases and surgical procedures.

An X-ray filter (X-ray film) is a plate with a small grain size (granularity) containing a phosphor (fluorite).

X-ray film has several gradations of grain size (g/m2): 400; 200, 150; and other smaller ones. The electrodes, located at a certain height above the film, are made of lithium and cesium, which, when interacting with a stream of electrons, creates a light image, which is then transferred to paper. There are general purpose X-ray films, contrast films and special films that can change the shade or combine a color image with a monochrome one. X-ray films are used only after they have been fixed before the first layer of emulsion with a special fixer. **Types of X-ray filter:**

- **Flat X-ray filters:** The most common types are metal sheets of high purity aluminum or beryllium bronze coated with a thin layer of aluminum. Transparency decreases with increasing X-ray energy. In the X-ray spectrum, filters are divided as follows: high-frequency, mid-frequency and low-frequency. With prolonged use, thin transparent filters are subject to wear. Regeneration of filters depends on the physical properties and mode of wear. The service life of reusable filters varies: from 0.1 year to several years. *The best material for medical X-ray projection cameras is 0.7 mm thick aluminum.* Service life reaches 4-