What is the function of the position-indicating device (PID)?
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Correct answer: Direct the X-ray beam toward the receptor
The PID directs the beam accurately toward the receptor. Correct alignment reduces scatter radiation and prevents retakes.
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More X-ray Equipment and Positioning questions
- Which PID shape provides the greatest reduction in patient radiation dose?
- What effect does increasing the source-to-film distance (long PID) have on the image?
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- Which error occurs if the PID is not centered over the receptor?
- What is the correct vertical angulation for bitewing radiographs?
- Which component of the X-ray tube generates electrons through heating?