What is the purpose of magnification views in mammography?

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Magnification views are used to enlarge a suspicious area so its features, such as calcifications or lesion margins, can be assessed more clearly. When screening or diagnostic images show suspicious microcalcifications or an indistinct mass, magnification projections zoom in on that region, increasing detail and reducing tissue overlap. The technique achieves this by adjusting geometry and using a small focal spot so the small area is magnified on the image, allowing finer characterization of calcification shape and distribution and of lesion borders. This improved detail helps distinguish benign patterns from those that warrant biopsy or closer follow-up. It is not intended to capture the entire breast in one shot, and it’s not primarily used to evaluate the opposite breast or to reduce overall radiation dose.