Physics of diagnostic X-ray

Physics of diagnostic X-ray


Objectives
1-Definition of x-ray
2-The main parts of X-ray unit with x-ray production.
3- How X-rays absorbed.
4-Biological effects of radiation.
5-Application of X-ray in medicine.


Definition X-Ray

Is form of electromagnetic radiation similar to visible light but with shorter wave length.


The main parts of X-ray unit with X-ray production

1-Source of electron filament or cathode.
2- Evacuated space to speed electrons.
3-High positive potential to accelerate electrons.
4-Target or anode which the electrons hit to produce X-Ray.

X-ray production

X-rays are generated via interactions of the accelerated electrons with electrons of tungsten nuclei within the tube anode.

Characteristic X-ray generation

This is filled by an outer shell electron with a loss of energy emitted as an X-ray photon .


Type X-Ray

There are two types of X-ray generated
characteristic radiation and bremsstrahlung radiation.