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Author Question: Beam restriction is also known as: a compensating filter the anode heel effect collimation ... (Read 23 times)

burton19126

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on: Jul 17, 2018
Beam restriction is also known as:
 
 a compensating filter
  the anode heel effect
  collimation
  alteration of image receptor

Question 2

Which portion of the orbit is best visualized with a PA projection?
 
 entire orbital base
  superior orbital margin
  inferior orbital margin
  lateral orbital margin


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ladyjames123

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

collimation

Rationale: The terms collimation and beam restriction can be interchanged. Collimators are the most common type of beam restriction.

Answer to Question 2

superior orbital margin

Rationale: The SOM is the portion of the orbit closest to the image receptor and therefore will have the least amount of magnification and greatest detail. In addition, with a PA projection, the petrous pyramids will fill the orbits, therefore only the SOM is clearly seen.


burton19126

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Reply #2 on: Jul 17, 2018
Thank you :)


ladyjames123

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Reply #3 on: Jul 17, 2018
Happy to help you


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