Where should the central ray be directed for AC joints? jugular ...

[sarasara]

Where should the central ray be directed for AC joints?
 
 jugular notch with 40 SID
  1 superior to jugular notch with 72
  jugular notch with 72 SID
  1 superior to jugular notch with 40 SID

Question 2

How is a true lateral humerus determined to be positioned properly?
 
 the humeral epicondylar plane is 45 degrees medially
  the humeral epicondylar plane is perpendicular to the IR
  the humeral epicondylar plane is parallel to the IR
  the humeral epicondylar plane is rotated 45 degrees laterally

[leeeep]

Answer to Question 1

1 superior to jugular notch with 72

Rationale: To include both joints on one image, the CR is directed 1 superior to the jugular notch and the SID must be set at 72.

Answer to Question 2

the humeral epicondylar plane is perpendicular to the IR

Rationale: For the AP nontrauma projection of the humoral, the palm is supinated and the humeral epicondylar plane is adjusted parallel to the image receptor. For the rotational lateral, the palm is internally rotated until the humeral epicondylar plane is perpendicular to the image receptor.

[sarasara]

Thank you

[leeeep]

No problemo