In mammography positioning, the principle of mobile versus fixed tissue is used to image the maximum tissue. Which option represents the correct combination?

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Maximizing tissue visualization relies on how tissue moves under compression. Tissue near the skin is more mobile, while tissue along the chest wall is relatively fixed. Using the oblique MLO view takes advantage of that mobility and angle to bring more tissue, especially the medial portion near the sternum, into the field of view. The MLO projection broadens the view to include the medial breast and tail of Spence, allowing the mobile tissue to spread and be imaged more completely. Other positions don’t exploit this combination as effectively, so they tend to capture less tissue overall. That’s why placing the medial breast in the MLO view yields the maximum imaged tissue.