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Author Question: The central ray for the PA/AP oblique projections for the c-spine is directed to: C5 and MCP C5 ... (Read 92 times)

go.lag

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on: Jul 17, 2018
The central ray for the PA/AP oblique projections for the c-spine is directed to:
 
 C5 and MCP
  C5 and MSP
  C5 and midway between the MSP and lateral margin
  the C3 and midway between MSP and lateral margin

Question 2

Where is the central ray for the lateral skull projection directed?
 
 level of the EAM
  midway between the outer canthus and EAM
  superior to the level of the EAM
  posterior to the EAM


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otokexnaru

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

C5 and midway between the MSP and lateral margin

Rationale: The CR for the AP/PA oblique projections of the c-spine is directed to the level of C5 and between the margins of the MSP and the lateral margin on the upside of the patient.

Answer to Question 2

superior to the level of the EAM

Rationale: The central ray is directed 1-2 inches superior to the EAM (external auditory meatus) in order to include the vertex of the skull. The lateral skull must include the frontal bone, vertex, and occipital bone.


go.lag

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

T4T

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Reply 3 on: Yesterday
Excellent

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