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Exam (elaborations)

Rad 101 final exam fall 2020 with the latest update

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  • Rad101
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  • Rad101

Rad 101 final exam fall 2020 with the latest update

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  • October 27, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Rad101
  • Rad101
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BravelRadon
Rad 101 final exam fall 2020 with the
latest update

what is kvp? - correct answer ✔✔kilovolt peak, measure of potential difference of quality and effects of
quantity. penetration/energy. effects quality first then quantity.



what is mAs? - correct answer ✔✔milliampere-second(s), measurement of milliamperage multiplied by
seconds (exposure time), which controls quantity



what is SID? - correct answer ✔✔source image distance, distance between the source of the x-rays and
the image receptor



what are the X-ray tube components? - correct answer ✔✔vacuum, source of electrons (filament),
method to acceleration (voltage), and method to stop the electron (target)



% of X-ray tube is heat, and % is x-rays? - correct answer ✔✔1% is x-ray, 99% becomes heat



what is primary radiation? - correct answer ✔✔is a x-ray beam after it leaves the x-ray or other forms of
radiant energy with little attenuation



what is secondary radiation? - correct answer ✔✔is radiation that hits the IR (remnant radiation)



what is remnant radiation? - correct answer ✔✔is all radiation exiting the patient during exposure and
ultimately striking the receptor



what is scatter radiation? - correct answer ✔✔radiation produces from x-ray photon interactions with
matter in such a way that the resulting photons have continued in a different direction



how do you avoid scatter and when does it show up? - correct answer ✔✔avoid= limiting size and shape
of the primary beam to the area of interest

, shows= during the transit of an x-ray photon through matter which sometimes make the photon collide
with an atom high



(cannot be fully eliminated)



detail - correct answer ✔✔kvp



distortion - correct answer ✔✔misrepresentation of the true size or shape of an object



Magnification - correct answer ✔✔SID and OID



what exits the X-ray tube and what exits the patient ? - correct answer ✔✔primary radiation exits the X-
ray tube, remnant exits the patient



what is photostimuable phosphor - correct answer ✔✔it is in the image receptor when the X-rays hit
that they becomes excited and form an image



radioculent - correct answer ✔✔permitting the passage of x-rays or other forms of radiant energy with
little attenuation (show up black)



radiopaque - correct answer ✔✔not easily penetrable by x-rays or other forms of radiant energy (shows
up white)



attenuation - correct answer ✔✔process by which a beam of radiation is reduced in energy when
passing through tissue or other materials



thermionic emission - correct answer ✔✔when the current through the filament is sufficiently high, the
outer shell electrons of the filament atoms are boiled off and ejected from the filament



what is a filament? - correct answer ✔✔the source of electrons in the X-ray tube (cathode)

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