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Calcium score in a 57-year old male with a zero calcium score at 3.0 mm slice reconstructions (not shown). Calcium in the left anterior descending artery exceeding the threshold value of 130 HU (arrowheads) is shown in two adjacent slices (a, b) and is larger in size than image noise shown in the ascending aorta on the same slice level (white arrows). A more detailed view is shown in c, d. The Agatston score of the lesion with 0.5 mm reconstructions was 13
