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. Author manuscript; available in PMC: 2016 Oct 28.
Published in final edited form as: Circ Cardiovasc Imaging. 2016 Oct;9(10):e005131. doi: 10.1161/CIRCIMAGING.116.005131

Figure 4. Scan-rescan Reproducibility for 18F-Fluoride PET quantification in the aortic valve with consequent sample size estimates.

Figure 4

Bland Altman plots of scan-rescan reproducibility for TBRMDSmean measurements using the original image analysis and acquisition methods (left) and then using final method (right). Percentage error for the final method is less than ±10%. Graph (below) shows the sample size estimates needed to detect differences in means which range from 10%to 30% of the initial scan point estimate. The plot illustrates the sample size required to detect differences in means ranging from 10% to 30% with figures shown for 80, 90 and 95% power. In all cases this assumes that the common standard deviation is 18.75%.