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Fig. 2 —Transverse CT scans in 63-year-old man. Upper row shows CT images
(collimation, 0.6 mm; slice thickness, 3 mm; reconstruction increment, 3 mm)
of same slice position at different reconstruction intervals, from 50% on left
to 70% on right, of the R-R interval in 5% steps. Lower row shows CT images of
consecutive slice position at same reconstruction intervals. Two calcified
plaques located in proximal left anterior descending artery are clearly
detectable using 60%, 65%, and 70% reconstruction intervals, resulting in
total Agatston score of 53, 50, and 50, respectively. Mild smearing artifacts
are seen in 55% reconstruction (total Agatston score, 42), whereas 50%
reconstruction results in a distinct underestimation of Agatston score (19)
due to severe smearing artifacts.
