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Author Question: All of the following are beam limiting devices except: filtration aperture diaphragms PBL ... (Read 67 times)

chads108

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on: Jul 17, 2018
All of the following are beam limiting devices except:
 
 filtration
  aperture diaphragms
  PBL
  extension cones

Question 2

The plantodorsal axial calcaneus should demonstrate the:
 
 calcaneus and calcaneocuboid joint
  calcaneus and tibiotalar joint
  calcaneus and subtalar joint
  calcaneus and tibiofibular joint


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Hikerman221

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

filtration

Rationale: Beam restriction is the single most important factor to minimize patient dose. Manual collimation, PBL, extension cones, and aperture diaphragms are all means to restrict the primary beam.

Answer to Question 2

calcaneus and subtalar joint

Rationale: The plantodorsal axial should demonstrate the entire calcaneus well with even density, but also show penetration of the subtalar or talocalcaneal joint.


chads108

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Reply 2 on: Jul 17, 2018
Great answer, keep it coming :)

kusterl

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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