How many degrees should a to be angled for an AP axial projection of the clavicle on an average patient?

Citation, DOI & article data

Citation:

Murphy, A. Clavicle (AP cephalic view). Reference article, Radiopaedia.org. (accessed on 08 Sep 2022) https://doi.org/10.53347/rID-46498

The clavicle AP cephalic angulation view is a standard projection part of the clavicle series and is often used in conjunction with the AP clavicle view.

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This projection straightens out the clavicle and projects most of it above the scapula and second and third rib. It can help to determine angulation of fractures and dislocation 1. 

  • patient is preferably erect
  • midcoronal plane of the patient is parallel to the image receptor, in other words, the patient's back is against the image receptor
  • the clavicle of the affected side is at the center of the image receptor
  • affected arm is in a neutral position
  • anteroposterior projection
  • centering point
    • just below mid clavicle  
    • angled cephalic 15-30° 
  • collimation
    • superior to the skin margins
    • inferior to include mid scapula 
    • lateral to include the skin margin
    • medial to include the sternoclavicular joint
  • orientation  
    • landscape
  • detector size
    • 18 cm x 24 cm
  • exposure
    • 60-70 kVp
    • 10-18 mAs
  • SID
    • 100 cm
  • grid
    • yes (this can vary departmentally)
  • the clavicle is 'flattened out' projecting above the shoulder girdle
  • a slight overlap of the humeral head within the glenoid

Remember to move your detector to compensate for the cephalic angulation. This projection can often better demonstrate subtle clavicle fractures, if you can't see anything on the AP projection, this should be your next point of call. 

References

How many degrees should the tube be angled for an AP projection of the clavicle?

For an AP axial clavicle projection, the central ray is angled 15- 30 degrees caudal.

What CR angulation should be used for an AP axial projection of the clavicle on an asthenic patient quizlet?

35. How much CR angulation is required for an asthenic patient for an AP axial projection of the clavicle? No CR angulation should be used for this projection.

How much should the CR be angled for an AP axial projection of the clavicle on an asthenic patient?

Chapter 6.

How many degrees is the body rotated for the AP oblique projection of the shoulder joint?

The AP oblique Grashey view is obtained with the patient rotated 35-45 degrees and his or her back (scapular body) up against the imaging detector.