Which statement best describes a bucky grid?

Which statement best describes a bucky grid?

• A. It does not move during exposure
• B. It moves during exposure to reduce grid lines
• C. It is never used with chest radiography
• D. It is used to increase scatter

Answer: (B)

A bucky grid is used to improve image contrast by reducing scattered radiation, and the way it achieves this is through movement during exposure. It consists of alternating lead strips with radiolucent interspaces mounted in a frame under the patient. The important feature is that the grid moves slightly while the exposure is happening. This motion blurs the visible pattern of the lead strips, so grid lines don’t appear on the final image. If the grid stayed still, those lines would create a noticeable artifact. The grid still serves to absorb scatter, which is why it’s used in radiography, including chest radiography, to keep contrast high.

A bucky grid is used to improve image contrast by reducing scattered radiation, and the way it achieves this is through movement during exposure. It consists of alternating lead strips with radiolucent interspaces mounted in a frame under the patient. The important feature is that the grid moves slightly while the exposure is happening. This motion blurs the visible pattern of the lead strips, so grid lines don’t appear on the final image. If the grid stayed still, those lines would create a noticeable artifact. The grid still serves to absorb scatter, which is why it’s used in radiography, including chest radiography, to keep contrast high.