Compression in mammography primarily achieves which outcome?

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Compression flattens the breast to reduce its thickness. This geometric change matters because with less tissue for the X-ray to traverse, the image achieves better sharpness and contrast: overlapping structures are separated more clearly, making small findings like calcifications or subtle masses easier to detect. A thinner, more uniform breast also lowers scatter and allows the radiographer to use an appropriate exposure that provides adequate image quality while reducing the radiation dose to the patient. The goal is not to change the breast’s physical properties like weight or temperature, nor to alter the tissue’s actual density; these aren’t influenced by compression.