Medical X-ray Machine has Five Functions

Medical x-ray machine is also called the x-ray instrument. X-ray machine used in clinical radiology has five functions:
Penetration of medical x-ray machine
Penetration of the X-rays through the material without being absorbed. The function of the medical x-ray penetration generally visible through the material. Visible because of its longer wavelength photons energy is very small, when hitting the object is reflected, most of the absorbed substances, not through the object; X-ray is not, pharynx and its wave length, energy large, according to the material, only part of the material absorbed through the atomic gap through demonstrated a strong ability to penetrate. X-ray penetration capacity of substances and x-ray instrument photon energy, the shorter the wavelength of X-rays, the greater the photon energy, the stronger penetration. Penetration of X-rays with matter density is related to the density of the material, X-ray absorption through the less; density, absorb less through. The difference in absorption of this nature can distinguish different densities of bone, muscle, fat and other soft tissue areas. This is the X-light perspective and photography physical basis.
Medical x-ray electromechanical away from the role of
Material by the irradiation of medical x-ray machine, so that the atomic electrons from the atomic orbitals, this effect is called ionization. In the photoelectric effect and scattering process, the photoelectron and the recoil electron from its atomic process called ionization, the photoelectron or the recoil electron in the road and other atomic collision, hit in the atomic escape e-called secondary ionization. In the solid and liquid. Positive and negative ions after the ionization will soon be complex, difficult to collect. But forget the gas collected from the charge is very easy to use ionization charge determination of X-ray exposure: X-ray measuring instruments precisely made according to this principle. Due to ionization, so that gas can conduct electricity; of certain substances can react chemically; organic body can induce a variety of biological effects. Ionization is the basis of X-ray damage and treatment.
Fluorescence role of medical x-ray machine
X-ray wavelength is very short, so it is not visible. Exposure to certain compounds such as phosphorus, platinum cyanide, barium, zinc sulfide cadmium, calcium tungstate, etc., due to ionization or excitation of atoms in the excited state, the atoms return to ground state, due to the level transition of the valence electrons radiation to visible light or ultraviolet light, which is fluorescent. The x-ray machine so that the role of the substances fluorescence called fluorescence role. The fluorescence intensity of X is proportional to the amount of light. This role is the basis of X-rays applied to the perspective. Use of this fluorescence role in the X-ray diagnostic work can be made of the screen, intensifying screens, and image enhancement in the input screen and so on. Screen used as a perspective to observe the X-ray intensifying screens used for photography through the images of human tissue to enhance the film photosensitive.
Thermal effect of medical x-ray machine
X-ray absorbed by the material can be transformed into heat energy, so that the object temperature, which is the thermal effect.
Medical x-ray machine interference, diffraction, reflection, refraction
These effects with visible light. X-ray microscope, the wavelength determination and material structural analysis has been applied.

Article : From Perlong medical (http://www.pl999.net/)
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