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