What grid ratios are used in mammography?

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Multiple Choice

What grid ratios are used in mammography?

Grids work to clean up scatter and improve image contrast, and the grid ratio tells you how strong that cleanup is. In mammography, you want enough scatter control to reveal subtle details like microcalcifications, but you also need to keep the radiation dose reasonable for the breast. That balance favors lower-to-moderate grid ratios, typically 3:1 or 5:1. These ratios provide meaningful scatter reduction without demanding the high exposures that higher ratios (like 6:1 or 8:1) would require, which is especially important given the small, compressed breast used in mammography. A 2:1 grid would offer less scatter rejection, while 6:1 or 8:1 are not commonly used because they significantly increase dose and can compromise image quality for these exams.

Grids work to clean up scatter and improve image contrast, and the grid ratio tells you how strong that cleanup is. In mammography, you want enough scatter control to reveal subtle details like microcalcifications, but you also need to keep the radiation dose reasonable for the breast. That balance favors lower-to-moderate grid ratios, typically 3:1 or 5:1. These ratios provide meaningful scatter reduction without demanding the high exposures that higher ratios (like 6:1 or 8:1) would require, which is especially important given the small, compressed breast used in mammography. A 2:1 grid would offer less scatter rejection, while 6:1 or 8:1 are not commonly used because they significantly increase dose and can compromise image quality for these exams.

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