Which person introduced a method of moving the grid to avoid shadows in radiography in 1915?

Which person introduced a method of moving the grid to avoid shadows in radiography in 1915?

• A. Gustav Peter Bucky
• B. William Crookes
• C. Clarence Dally
• D. Hollis Elmer Potter

Answer: (B)

Moving the grid during exposure eliminates grid-line shadows by averaging out the grid’s appearance across the image. This idea became practical with the Potter–Bucky diaphragm, a moving-grid system developed around 1915. Hollis Elmer Potter is the figure most associated with introducing the moving-grid method, which was later refined into the widely used device. Gustav Bucky contributed the grid design that reduces scatter, and together they produced the moving-grid concept. The other names listed are linked to earlier radiography advances but not this specific technique.

Moving the grid during exposure eliminates grid-line shadows by averaging out the grid’s appearance across the image. This idea became practical with the Potter–Bucky diaphragm, a moving-grid system developed around 1915. Hollis Elmer Potter is the figure most associated with introducing the moving-grid method, which was later refined into the widely used device. Gustav Bucky contributed the grid design that reduces scatter, and together they produced the moving-grid concept. The other names listed are linked to earlier radiography advances but not this specific technique.