Potter-Bucky Diaphragm

Potter-Bucky Diaphragm

Write a short note on the Potter-Bucky diaphragm.
Answer.

Potter-Bucky diaphragm

Potter-Bucky diaphragm is also known as the moving grid.

• It was discovered by Hollis E Potter in 1920.
• Potter-Bucky diaphragm is a moving grid which prevents scattered radiation from reaching to the film, and secures better contrast and definition.
• In this the grid is moved sideways across the film during exposure. This leads to blurring out of the shadows of grid strips, thus they are not visible on the film.
• Image of the radiopaque grid lines on the film can be deleted by mechanically moving the grid in a direction of 90° to the grid lines (but not the object) during exposure. This results in evening (blurring) out the radiolucent lines and resulting in a more uniform exposure.

“Steps to explain the function of the Potter-Bucky diaphragm: Grid movement vs filtration: Q&A guide”

• Potter-Bucky diaphragm eliminates most of the scatter while allowing most of the primary radiation through.
• Lead sheets cast a shadow on the image, and this is removed by moving the grid at the time of exposure.
• In older days, the shape of the diaphragm was curved, but nowadays the shape of the diaphragm is flat.

“Understanding the role of the Potter-Bucky diaphragm in radiography: Q&A explained”

“Importance of studying the Potter-Bucky diaphragm for better imaging outcomes: Questions explained”

Potter-Bucky diaphragm Advantages

• Removes the scattered radiation and decreases fog, as well as increases contrast.
• It eliminates white lead lines efficiently.

“Common challenges in using the Potter-Bucky diaphragm effectively: FAQs provided”

Potter-Bucky diaphragm Disadvantages

• It increases exposure time due to slow movement.
• It increases patient dosage.
• It can cause failure.
• It is costly.