PHO-TONS OF FUN
Wavelength is the distance covered by one complete
Sine wave
kVp is varied depending on anatomy thickness and can be measured with
Calipers
What kind of current is necessary for correct operation of the x-ray tube
Direct
Material that absorbs x-ray energy and emits part of that energy as visible light
Scintillator
Elongation and foreshortening are examples of
Shape distortion
Photons
At diagnostic levels most x-rays produced are from what interaction
Bremsstrahlung
How does electromagnetic radiation travel
In waves along a straight path
The kilovoltage settings on radiographic equipment must be tested annually and mustbe accurate to within
+/- 4 kV
The distance between the center of one pixel and the center pf am adjacent pixel
Pixel pitch
Which factor will increase x-ray beam quantity at the image receptor without increasing heat units produced by the tube
The larger the actual focal spot the greater the heat capacity. The smaller the focal spot the greater the radiographic image sharpness is known as
What is located in the x -ray circut between high voltage transformer and the x-ray tube
Rectifier
Device that receives the remnant beam, converts it into light, and then increases the brightness of that light is the
Image intensifier
A compensating filter is used to
even out widely differing tissue densities
What are two other names for coherent effect
Thompson Scatter and Classical
What happens to the current when the x-ray machine is turned on?
A small amount is sent to the filament warm it and get it ready for higher current
A variable transformer that is used to select kVp for the x-ray circuit
Autotransformer
Device that uses maximum heat storage ability of the tube to deliver mAs
Falling load generator
A high Signal to Noise Ratio provides an image with
High spatial resolution
What is the latin word for photon and what does it mean
Phôs means light
Two terms one produced by characteristic x-rays and the other by bremsstrahlung x-rays.
Discrete x-ray spectrum and Continuous x-ray spectrum
What is the amount of electricity provided to the x-ray department
60 HZ AC
The part of a detector element that stores electrical charges
Capacitor
The fixed spatial resolution characteristics of direct digital systems is determined by the (please say full terms)
Thin Film Transistor and the Detector Element size