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Author Question: What positioning error occurred if the teeth superimpose the odontoid process on the AP open mouth? ... (Read 126 times)

K@

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on: Jul 17, 2018
What positioning error occurred if the teeth superimpose the odontoid process on the AP open mouth?
 
 the chin was too extended
  the head was rotated
  the chin was too flexed
  the patient's mouth wasn't fully opened

Question 2

Increased collimation results in:
 
 patient dose increasing
  scatter radiation increasing
  all of these answers apply
  radiographic contrast increasing


Laurenleakan

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Reply #1 on: Jul 17, 2018
Answer to Question 1

the chin was too flexed

Rationale: If the teeth superimpose the odontoid process, the chin needs to be extended more to align with the base of the skull

Answer to Question 2

radiographic contrast increasing

Rationale: Increased collimation of the primary beam results in: an increase in radiographic contrast, decreased radiographic density, decreased patient dose, and decrease in scatter radiation.


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