X-ray Equipment and Positioning · CDA

Which step helps ensure correct image geometry when using the paralleling technique?

  1. Using a short, round PID cone
  2. Placing the receptor firmly against the teeth
  3. Aligning the PID perpendicular to receptor
  4. Angling the receptor at 45 degrees
Show answer and explanation

Correct answer: Aligning the PID perpendicular to receptor

The PID must be perpendicular to the receptor to achieve accurate image geometry. This reduces distortion and improves clarity.

Difficulty: Medium Question 15 of 20

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