Calcium score by disease group, clinical metrics and detection between CT and physical examination. (A) Comparison of the height normalized calcium score (Agatston) across adult DM and JDM disease, W value = 0.644, n.s. (B) Height normalized calcium score (Agatston/cm) against physician measure of disease damage, Spearman: r = 0.80, P < 0.001. (C) Height normalized calcium score (Agatston/cm) against date of diagnosis to date of scan, Spearman: r = 0.69, P = 0.001. (D) Differences in calcinosis detection by body region across the cohort, Kappa = 0.45, Fisher’s Exact: *P < 0.05; Distal legs