Learn the basics of X-ray physics. Characteristics of the x-ray beam. Anterior-posterior versus posterior-anterior x-ray projection. X-ray magnification diagram.

Beam Quality describes the shape of the energy spectrum (i.e. the energy distribution of the x-rays) and beam quantity describes the total intensity of the spectrum (i.e. the area under the x-ray spectrum curve).

2016年3月6日 · The x-ray beam is polyenergetic (many energies) and consists of a wide range of energies known as the x-ray emission spectrum. The lowest energies are always approximately 15 to 20 keV, and the highest energies are always equal to the kVp set on the control panel.

X-rays are generated within the tungsten anode and an X-ray beam (5) is directed towards the patient. X-rays are generated via interactions of the accelerated electrons with electrons of tungsten nuclei within the tube anode.

The plot of the x-ray energies is called the x-ray spectrum. In describing the x-ray spectrum multiple terms are used include quality of the x-ray beam and quantity of x-rays in the beam. If two x-ray spectra have different shapes they are said to have different x-ray quality.

X-ray optics is the branch of optics dealing with X-rays, rather than visible light. It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction, X-ray crystallography, X-ray fluorescence, small-angle X-ray scattering, X-ray microscopy, X-ray phase-contrast imaging, and X-ray astronomy.

Radiographic images are created by exposing the patient to an X-ray beam. The X-ray beam is actually composed of millions of individual trays. So what is an x-ray? An x-ray is simply a tiny package of energy that we call a photon. That's why sometimes we refer to it as an x-ray photon. X-ray photons have a lot of energy, but they have no mass.

2020年4月17日 · An X-ray beam is produced through the interaction of highly energetic electrons with matter. This conversion of kinetic energy into electromagnetic energy from the deceleration of these highly energetic electrons after interacting with a metal target generates X-rays.

This tutorial describes how X-rays are produced and how they interact with the body in forming a radiographic image. X-ray safety issues are briefly discussed. A basic knowledge of X-ray physics is complementary to knowledge of X-ray interpretation.

2018年7月22日 · Xrays are formed within a very small area on the target (anode) called a focal spot. The actual size of the largest focal spot is no more than a few millimetres in diameter. From the focal spot, the xray diverge into space, forming the cone-shaped primary xray beam.