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Author Question: When positioning the 4th digit into an oblique position, which way should the digit be rolled? ... (Read 85 times)

tth

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on: Jul 17, 2018
When positioning the 4th digit into an oblique position, which way should the digit be rolled?
 
 medially
  supination
  pronation
  laterally

Question 2

Which oblique projection would be preferred to best image the zygapophyseal joints in the lumbar spine?
 
 lateral
  AP oblique
  AP
  PA oblique


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apple

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

laterally

Rationale: When positioning a specific digit, position the part closest to the image receptor and keep the part parallel to the image receptor allowing the central ray to intersect perpendicular to the part. For the 4th digit, from the pronated hand position, roll the hand away from midline or laterally to keep the digit closer to the image receptor.

Answer to Question 2

AP oblique

Rationale: AP oblique projections will utilize the RPO/LPO positions, which would keep the spine closest to the image receptor reducing magnification.


tth

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Reply 2 on: Jul 17, 2018
Gracias!

mohan

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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