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Figure 2. Two hepatic metastases. (a) 2.5 mm axial slices displayed as acquired directly from the multislice CT scanner. (b) 1.0 cm axial slices produced by summating four 2.5 mm axial slice acquisitions, as sent to PACS. The smaller metastasis, lying just posterior to the middle hepatic vein (arrow), is much more clearly seen on the thin section (a), although it is still visible on the summated thicker section (b).

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