Which PID shape provides the greatest dose reduction to the patient?
Show answer and explanation
Correct answer: Rectangular, open-ended PID
Rectangular PIDs restrict the beam to the shape of the receptor, significantly reducing patient exposure. Open-ended designs also eliminate scatter from pointed, closed cones.
Keep practicing
More Radiation Protection for Patient questions
- Proper collimation limits the X-ray beam to the size of the receptor. What benefit does this provide to the patient?
- Which exposure factor should be adjusted to minimize patient radiation dose while maintaining image quality?
- Why should dental radiographs be prescribed based on individual patient needs rather than routine schedules?
- Which patient group is most sensitive to radiation and requires extra precautions?
- Which technique reduces the likelihood of patient retakes due to positioning or exposure errors?
- When is a lead apron required for patient radiation protection?