What effect does increasing the source-to-film distance (long PID) have on the image?
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Correct answer: Less magnification, sharper image
A longer PID reduces beam divergence, producing sharper images with less magnification. It also helps reduce patient exposure.
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More X-ray Equipment and Positioning questions
- The paralleling technique requires the receptor to be placed:
- 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?
- What happens if the vertical angulation is too steep when taking a periapical radiograph?
- Which technique generally produces the most accurate and least distorted periapical images?