Lra 211 week3 Questions and Correct
Answers
What does differential absorption refer too? Ans: X-ray photon
that absorbed, photo electrically and those that penetrates the
body are transmitted
What process is known as attenuation? Ans: reduction in the
energy or number of photons in the primary x-ray beam after it
interacts with anatomic tissue
Which are the two distinct process that occur during attenuation
and diagnostic range Ans: Absorption and scatter
What is ionization in the context of x-ray interactions? Ans: the
ability to remove (eject) electrons
Which factors affect the amount of x-ray beam attenuation Ans:
Thickness of anatomical, part the tissues atomic number, tissue
density energy of them.
What is the interaction between x-ray photons and image receptors
forms the latent or invisible image? Ans: True
Differential absorption are differences between x-ray futons that
absorb photo electrically both that scatter no monster transmitted
Ans: False
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Approximately what percentage x-rays reduce 4 to 5 cm of tissue
thickness Ans: 50%
What determines the absorption characteristic of an anatomical
part? Ans: The thickness of the body, the atomic number of the
tissue density
Tissue composed of high atomic number such as bone Ans:
Attenuate the xray beam more than lower atomic number tissue
What does exit radiation or exit Remnant radiation consists of
Ans: Both Transmitted or scatter radiation
What term describes unwanted exposure on the image caused by
scattered radiation Ans: fog
Higher penetrating xray have Ans: Shorter wavelength, high
frequency
Skeletal bones are differentiated from air filled lungs due to their
differences in their Ans: Absorption and transmission
Higher atomic number tissue like bone attenuate the cray beam
more than the lower atomic number Ans: True
Clearer areas on radiographic image are produce by incoming xray
photons that are transmitted Ans: False
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