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Fig. 2.12. If the image receptor is not raised sufficiently high, the breast will droop onto it, resulting in less imaged superoposterior tissue.
Fig. 2.13. Poor posture makes the breast easier to position. (A) An erect patient raising her shoulders, which tightens the skin. (B) The same patient relaxing her shoulder, so that the skin loosens and her breast naturally falls forward.
Fig. 2.14. To help visualize the medial tissue, the technologist lifts the opposite breast onto the image receptor.
Fig. 2.15. Because the upper axillary skinfold (A-arrow) overlapped the glandular tissue in the upper outer quadrant, the technologist pulled it back (B) before performing the CC view. Since its position was high, it was clearly visible on the MLO view.

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Fig. 2.16. The CC view (A). On the CC-view mammogram (B), a knuckle of pectoral muscle often overlaps the posterome-dial breast tissue (open arrow). In about 30 percent of patients, the tissue beneath the medial cleavage will also be revealed (solid arrow).

Fig. 2.17. When the pectoral muscle is visible on the CC view (A), it may imitate a cancer. Three different CC views (B, C and D) on the same patient show changing convexity and shapes, consistent with pectoral muscle rather than a true mass density.

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