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. 2012 Jan 20;28(6):1315–1327. doi: 10.1007/s10554-012-0016-6

Fig. 4.

Fig. 4

Frame-based comparison between 3D QCA and OCT. Correlations in assessing short diameter (a), long diameter (b), and area (c). Bland–Altman plots show the differences of the measurements in short diameter (a′), long diameter (b′), and area (c′). There is an increasing bias towards larger discrepancy in long diameter and area at larger vessels. n = 541 in 40 vessels