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Dental radiology Test | Questions with Answers Verified 100% Correct
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Dental radiology Test | Questions with Answers Verified 100% Correct
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Dental radiology Test | Questions with AnswersVerified 100% Correct
Five Rules for Paralleling tech - ✔✔Film Placement- most cover teeth to be examined
Film Position- parallel to the long axis
Vertical Angulation- CR directed perpend to film
Horizontal Angulation - CR directed thru contact-open
Film Exposure- center x-ray beam to espose film
Molecule - ✔✔2 or more atoms joined by chemical bonds
Ionization - ✔✔losing or gaining an electron
Radiation - ✔✔Emission or propagation of energy though space or matter, waves or particles
Ionizing Radiation - ✔✔Radiation that is capable of producing ions by removing or adding
electrons to an atom.
Velocity - ✔✔Wave speed= speed of light
Wavelength - ✔✔distance b/t crests- energy and penetrating power
Frequency - ✔✔# of wavelenths that pass a given point in a certain amount of time.
Low freq./ Long wavelength = decreased energy
High freq/ short wavelength= increase energy
, X- radiation - ✔✔type of High energy, ionizing electromagnetic radiation
Amperage (mA) - ✔✔# of electrons moving through the cathode filament
Voltage ( kV) - ✔✔meaurment of electrical force that causes electrons to move from (-) to (+)
pole
kVp - ✔✔Controls the current passing from the cathode to the anode
Speed of light - ✔✔186,000 miles/sec
Produced when radiation strikes matter, reduces penetrating power - ✔✔Secondary
Radiation
When radiation is deflected off matter - ✔✔Scatter Radiation
Compton Scatter - ✔✔62%
x-ray photon is deflected form path during passage through matter
IONIZATION occurs
Coherent Scatter - ✔✔8%
x-ray photon that has its path altered by matter
No change in atom occurs, NO ionization
Radiograph with many light and dark areas, but FEW shades of grey is said to have.... -
✔✔High contrast
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