Shoulder–Receptor/X-ray Head Interference Errors

    Shoulder–Receptor/X-ray Head Interference Errors – The third category of technical errors in panoramic radiography involves shoulder and receptor contact due to short neck and/or thick shoulder anatomy and lack of clearance between the shoulder and the receptor and/or x-ray head. Contact may result in improper machine rotation, patient movement, image artifacts or partial image production.

Figure 139.
Shoulder contact on the patient’s right caused the machine to stop resulting in an incomplete or partial image.
Figure 140.
X-ray head stuck on neck/shoulder stopping rotation and causing repeated exposure of sane area (black band).
Figure 141.
Shoulder contact on the patient’s right side caused the patient to move in response.