Figure 5. Emphasis of tumors by accentuating their contours.

Four projections of the same scene with tumors not emphasized (left, (A) and (C)) and emphasized (right, (B) and (D)) in two different projections (anterior-posterior, top, (A) and (B) and posterior-anterior, bottom, (C) and (D)). Emphasized tumors can be perceived better, even if they are lying behind vessels and territory borders (arrow marks).