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Figure 4b. Dual-section spiral CT scans show a typical minimally calcific lesion (arrow) at (a) baseline and (b) 3-year follow-up. In b, the lesion’s area has doubled and its TCS has increased from 1 to 2. To enable identification of the minimally calcific lesions, automatic highlighting of the calcification was used, which gave a gray coloration to the calcification.