V. Image Acquisition Errors

Question 1

Histogram Analysis Error

Answer 1

Errors occur due to:
1. Incorrect anatomical menu selection.
2. Presence of unexpected materials (e.g., metal implants)
3. Large exposure errors causing plate saturation.

Question 2

Scatter Control

Answer 2

1. Beam limiting devices and proper exposure settings reduce scatter.
2. Optimal exposure – overexposure produces more scatter
3. Background scatter levels range from 40 mR/day to 80 mR/day.