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Fig. 5B —Cardiac motion artifacts in 67-year-old man with history of throat cancer and multiple pulmonary nodules. Nodule in lingula was detected by all three observers in transverse and coronal displays. Same CT scan as A reformatted into 5-mm-thick coronal sections depicts motion artifacts along cardiac contour (black arrows). Nodule in lingula (white arrows) shows lobulated appearance due to transmitted motion artifacts. Note second nodule in upper lobe (open arrow) and anterior pleural junction line (arrowheads).