RADT 1010 Exam

RADT 1010 Exam

27 cards   |   Total Attempts: 182
  

Cards In This Set

Front Back
Order of tissue absorption from least to most:fat, air, metal, bone, water
Airfatwaterbonemetal
What is scatter radiation
Radiation that interacts with an attenuator and has changed in direction and lost energy
Wave Theory Equation
C= frequency * wavelength
Particle Theory Equation
E= frequency * wavelength
As known as quantum theory Bundle of energy = quantum or photon
Inverse Square Law Equation
X-rays travel in straight line
I1/ I2 = d22/ d21
Direct Square Law Equation
MAs1/ mAs2= d21/ d22
3 Interactions In the tube
1. Heat 2. Brems- Further from N less energy lost= low energy beams3. Characteristic- knocks out electron making hole to be filled by outer shell electron
What is attenuation
Reduction in the intensity of the beam as it traverses matter by either absorption or scatter
Attenuation Interactions- In the person
1. Photoelectric Effect- absorption- Incident photon comes and knocks electron out and outer shell electron replaces and causes characteristic radiation
2. Compton Effect- Scatter- knocks out a valence electron and gives off scatter radiation-high energy= low angle
4 components of a generator
1. Mains Supply -power switch -line voltage compensator
2. Primary-kV selector-kV meter-timer
3. High voltage circuit- rectifiers-mA meter-tube
4. Filament Circuit-mA selector-focal spot size selector
3 types of Grids
1. Parallel2. Focused3. Cross Grids
Grid Cut off
1. Off level- uniform2. Off centered- uniform3. Upside down- peripheral4. Lg SID- peripheral5. Sm SID- peripheral6. Parallel- peripheral
2 Types of Filters
1. Inherent- by tube and housing- envelope -port- most-oil
2. Added-compensating -compound
4 Types of Mobiles
1. Mains dependent2. Battery Dependent 3. Hybrid4. Capacitor Discharge
5 Image Enhancement
1. Enhancement - brightness& contrast2. Restoration3. Compression4. Analysis5. Sythesis