What is the purpose of a patient instruction to hold still during spine radiography?

What is the purpose of a patient instruction to hold still during spine radiography?

• A. To allow more time to reposition.
• B. To minimize motion blur and ensure sharp vertebral outlines.
• C. To reduce patient anxiety.
• D. To increase exposure.

Answer: (B)

Holding still during spine radiography prevents motion blur. Even slight movement during the exposure can smear the sharp edges of the vertebral bodies, making margins unclear. Clear, crisp outlines are essential to accurately assess alignment, detect fractures, and identify degenerative changes. The main goal is diagnostic image quality, not to gain time for repositioning, reduce anxiety, or change exposure dose. Sometimes a brief breath-hold is used as well to minimize motion from respiration, but the primary purpose remains preventing blur to preserve sharp vertebral outlines.

Holding still during spine radiography prevents motion blur. Even slight movement during the exposure can smear the sharp edges of the vertebral bodies, making margins unclear. Clear, crisp outlines are essential to accurately assess alignment, detect fractures, and identify degenerative changes. The main goal is diagnostic image quality, not to gain time for repositioning, reduce anxiety, or change exposure dose. Sometimes a brief breath-hold is used as well to minimize motion from respiration, but the primary purpose remains preventing blur to preserve sharp vertebral outlines.