What is the purpose of immobilization devices in pediatric radiography?

• A. To calibrate the imaging system
• B. To increase patient discomfort for compliance
• C. To minimize motion and improve sharpness
• D. To adjust exposure factors automatically

Answer: (C)

Immobilization devices in pediatric radiography are used to keep a child still during the exposure. By limiting movement, motion blur is reduced, which directly improves image sharpness and diagnostic quality. Small movements in children can easily degrade a radiograph, so immobilization helps obtain accurate positioning and consistent results, while also reducing the need to repeat exposures. These devices are designed to be safe and comfortable, often working with gentle guidance and parental involvement to improve cooperation. They are not used for calibrating the imaging system or automatically adjusting exposure factors—that's handled by other parts of the equipment and protocols.