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. Author manuscript; available in PMC: 2008 Nov 25.
Published in final edited form as: J Nucl Med. 2008 Oct;49(10):1620–1627. doi: 10.2967/jnumed.108.052076

Figure 4.

Figure 4

Bland-Altman analysis of reproducibility of k2 for tumors (efflux rate constant). (A) Replicate measures of k2 are plotted against each other. Solid symbols represent data acquired on Advance scanner; open symbols represent data acquired on Discovery RX scanner. (B) Absolute differences between replicate k2 measurements are plotted as function of their mean and show clear proportionality. (C) After log transformation, dsd for k2 was calculated as 0.259. Dashed lines denote 95% CIs on either side of mean (1.96 × dsd).