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Example coronal images as function of imaging time from mCT Flow and Vision scanners. Images show 9.89-mm-diameter (A) and 4.95-mm-diameter (B) spheres. Arrows show embedded spheres in lung; all 6 embedded spheres in cylinder at bottom are same size as those in lung. Physical spheres visible in Vision and mCT Flow images are not identical because of difference in coronal slice where embedded spheres were placed.
