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Fig. 1 —66-year-old man with adenocarcinoma of the lung. Solitary
nodule measuring 15 mm in diameter is present in right middle lobe. Dynamic MR
images obtained before and after IV injection of gadopentetate dimeglumine
show rapid and relatively heterogeneous enhancement that continues to late
phase. Maximum enhancement ratio, 68%; time at maximum enhancement ratio, 2
minutes; slope, 34%/min; washout ratio, 4% (prior). Subsequent panels (left to
right) show dynamic MR images obtained at times noted. Last panel shows
placement of region of interest (ROI).
