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Author Question: Which technical settings should be considered for an adult ankle exam? 60 kVp, grid, and small ... (Read 85 times)

sarasara

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on: Jul 17, 2018
Which technical settings should be considered for an adult ankle exam?
 
 60 kVp, grid, and small focal spot
  70 kVp, grid, and small focal spot
  60 kVp, tabletop, and small focal spot
  70 kVp, tabletop, and small focal spot

Question 2

When imaging all 5 toes with the AP projection, where is the central ray directed?
 
 to the base of the 3rd metatarsal
  to the 2nd metatarsophalangeal joint
  to the 2nd tarsometatarsal joint
  to the 1st metatarsophalangeal joint


lindahyatt42

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

60 kVp, tabletop, and small focal spot

Rationale: Parts that measure less than 10 cm will be imaged tabletop and non-grid. Tabletop imaging should use kVp values less than 70 . Small focal spot for extremities is desired to achieve the best detail.

Answer to Question 2

to the 2nd metatarsophalangeal joint

Rationale: When imaging the AP projection of all 5 toes, the central ray is directed to the 2nd metatarsophalangeal joint. Collimation is to include mid metatarsals.


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