Why is it important to maintain a consistent patient position when comparing pre- and post-treatment spine radiographs?

Why is it important to maintain a consistent patient position when comparing pre- and post-treatment spine radiographs?

• A. It reduces radiation exposure.
• B. To ensure accurate comparison of vertebral alignment and curvature changes over time.
• C. It improves image sharpness.
• D. It speeds up the exam.

Answer: (B)