X-ray Production Part 2 Flashcards
controls heating of the filament
mA (milliamperage):
: controls the time in which x-rays are produced
Exposure time
controls the acceleration of electrons from cathode to anode
•kV (kilovoltage):
: Flow of electrons through an electrical conductor.
◦Electricity
:Amount of electrons flowing through a conductor per second. Measured in amperes (A).
◦Current
:Path of electrical current
◦Circuit
:Difference in electrical potential energy between two points in an electric circuit. Measured in volts (V).
◦Voltage (Potential difference)
T?F: 1.During each half-cycle (1/120 of a second), anode is positive and attracts the electrons from the cathode (x-radiation is produced).
True
T/F: 2.During each alternate half-cycle (1/120 of a second), anode is negative, therefore, no attraction for electrons exists and no x-radiation is produced(inverse voltage).
True
What are the 4 benefits of Constant potential and direct current?
- Shorter exposure times
- More consistent beam intensity
- Higher mean energy of beam
- Decreased radiation dose
______ radiation
◦AKA Breaking radiation
◦Electron to nucleus interaction
◦Thef ast- moving electrons either slow down or stop when they come close to the nucleus of the atoms and part of their energy is transferred as X-rays.
1.Bremsstrahlung radiation
_____ radiation
- Electron to electron interaction
- A few electrons interact with tungsten target orbital electrons imparting energy to ionize the tungsten target
- When electrons displace inner shell electrons characteristic radiation is produced
- Characteristic radiation
Bremsstrahlung radiation increases with _____ kV
Increased kV
If there is more deviation in Bremsstrahlung radiation, is there more or less x-ray?
More x-rays
Rectification is used to make ____ current to _____ current
AC to DC
