Most standard x-ray systems are made up of the same main components, an x-ray tube, a .
high voltage power supply, and a control panel. Working together these components are .
common to all standard systems. In this report I will be introducing you to the primary .
exposure factors of the control panel. .
In order to take an xray on any type of machine, you will need to know the three .
principle controls to a standard x-ray system, these include the mA control, the kvp.
control, and a timer. Lets start with the kvp control or kilovoltage peak. This is used.
to control the quality by setting the penetrating power of the beam. The higher the voltage .
setting, the greater the speed of the electrons traveling across the tube from the filament to .
the target, and the greater the energy of the x-ray beam. The higher the kvp, the higher the .
quality of the x-ray beam. .
The second factor is the milliamperage or mA. This controls the rate at which .
the electrons are emitted. The higher the mA setting, the higher the temperature of the .
filament and the higher the number of electrons emitted. In other words, the higher.
the mA, the more heat and the higher the amount of radiation. By varying the MA on the .
machine we can control the quantity of x-rays produced.
.
The last exposure factor I will describe is Time. Time is also used to control .
the quantity or the amount of radiation produced. By using this setting you will control the.
rate at which he radiation is emitted from the tube. The length of the exposure time affects .
the quantity of radiation. .
The combination, or multiplication of mA and time factors will produce milliamperes.
per second or mAs. The term mAs stands for milliampere-seconds. It is the product of the .
mA through the x-ray tube and the time the tube was energized. For example, on any given.
x-ray machine, operated at a certain kvp, the radiation output rate is proportional to the mA.
and the total radiation output for an exposure is proportional to the mAs.
