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. 2018 Dec 12;18:51. doi: 10.1186/s40644-018-0167-3

Fig. 1.

Fig. 1

ROI placement. A 5 cm thick band was placed around the bore isocenter. Readers were instructed to place 3 ROIs in the liver and 3 in the spleen, on a plane passing through the portal vein division. Readers were instructed to place the ROIs as close as possible to the midpoint of the 5 cm band, when possible, trying to avoid vessels and bile ducts