The charged particle from an atom that is used to create an x-ray.
What is an Electron
100
A halo effect (penumbra) is caused by the x-ray beam not hitting this
What is the focal spot (must be pinpoint)
100
The two end products of taking x-rays
What is 1% x-ray, 99% heat
100
What restricts the size of the promary bean (the light box)
What is the collimator
100
The term used to describe the amount of energy used to heat the filament in order to obtain electrons
What is mA, Milliamperage
200
Can x-rays penetrate materials that absorb or reflect light
Yes
200
What is the degree of blackness on a radiograph
What is density, affected by kVp
200
The pattern that x-rays travel in (direction)
What is straight line
200
The distance between the bucky tray and the x-ray tube
What is 36in
200
What term describes the amount of radiation all technicians shoule try to achieve
What is ALARA (As low as reasonably achieveable)
300
Where the electrons used in x-rays come from
What is tungsten filament
300
What is the density difference between two objects
What is contrast, affected by kVp and mAs
300
Do short or long wavelengths penetrate farther and have more energy
What is short wavelength
300
How can you prevent anode failure via filament evaporation
Correct use of the pedal, pre-expose button
300
What is the allowed amount of radiation per year technicians are allowed to recieve
What is 0.05Sv/ year
400
Describe the difference between slow, medium and fast screen film
Slow longer time, more detail, medium in the middle, high, fast time, less details
400
What is responsible for accelerating electrons (speed) between anode and cathode, relates to the penetration power of the x-ray and is influenced by the charge difference between the anode and the cathode
What is kilovoltage kV
400
What is used by veterinary professionals to monitor their radiation exposure
What is a dosimetry badge (dosimeters), provided by hospital, monitored by outside company monthly and the report given to every individual so they can monitor their exposure
400
What is the responsibility of the step up transformer
Increasing the voltage (power) to the machine to increase kV and produce an x-ray
400
List the PPE used by technicians when taking a radiograph
What is apron, thyroid shield, and gloves
500
What is responsible for increasing the radiation used in order to use less
What is intensifying screen
500
What part of the x-ray mchine reduces scatter radiation, have a high and low version, and often interfear with radiograph quality so mAs and kVp must be altered to compensate
What is Grid
500
Describe the heel effect
Variation in intensity of the primary bean, stronger towards the cathode side, the less the angel the more intense the effect
500
Why are rotating anodes better than stationary anodes
They do not over heat. There is less scatter radiation due to pitting.