Write down the main functions of line filter, line screen, photographic bed and stereo photographic frame.

The function of 1.X-ray filter is to make X-rays become a rigid beam with relatively uniform energy distribution, reduce the X-ray radiation dose of the examinee, optimize the energy spectrum of X-rays, absorb low-energy X-rays and reduce scattered rays.

2. The X-ray shielding device, also called beam limiter, is installed in the window of the X-ray tube assembly to control the X-ray to display an appropriate irradiation field, which is used to shield unnecessary original emission lines and minimize the irradiation area of patients.

3. The X-ray photographic bed can be used with various types of digital X-ray machines to support patients, so that the irradiated parts of their bodies can be positioned or moved, and ordinary photography and line filtering photography of various parts of the human body can be carried out, and it can also be used with photo frames to carry out chest photography.

4. The stereo bracket can ensure that the values of the two cameras are equal, and at the same time, it can be adjusted with the change of the lens to obtain a suitable 3D effect.