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Lesion localization using the scroll bar on tomosynthesis: Why doesn't it always work?

      Highlights

      • The scroll bar predicts the location of the lesion on the true lateral view.
      • Lesion location relative to the nipple on the scroll bar defines true location.
      • Additional slices on the compression side are added to include the entire breast.
      • The scroll bar reflects the thickest portion of the breast not thinner portions.
      • Rolling of the breast on the orthogonal view can change apparent lesion location.

      Abstract

      The scroll bar on digital breast tomosynthesis (DBT) is an important tool that facilitates localization of lesions on the orthogonal view. While this works well most of the time, occasionally the location of the lesion as directed by the scroll bar is seemingly inaccurate. There are five important reasons why the scroll bar indicator may suggest a contradictory lesion location. Understanding specific scenarios when this may occur will aid the reader in reconciling these differences.

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