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. 2014 Jul 2;9(7):e101580. doi: 10.1371/journal.pone.0101580

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© 2014 Taina et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Bland-Altman plots show the reproducibility of 40 left atrium and 40 left atrial appendage volume measurements for the same observer and different observers in two-chamber view and the transversal view. The X-axis shows the mean of two volume measurements and the y-axis shows a difference between respective measurements. The middle line corresponds to the mean difference and the outer lines correspond to the 95% confidence interval. Filled squares (▪) indicate cardiac computed tomography images with excellent image quality; filled circles (•) indicate good image quality; empty circles (), moderate image quality; and empty squares (□), poor image quality. Volume size and image quality had no significant influence on interobserver or intra-observer measurements in either orientation.

Inline graphic — Bland-Altman plots show the reproducibility of 40 left atrium and 40 left atrial appendage volume measurements for the same observer and different observers in two-chamber view and the transversal view. The X-axis shows the mean of two volume measurements and the y-axis shows a difference between respective measurements. The middle line corresponds to the mean difference and the outer lines correspond to the 95% confidence interval. Filled squares (▪) indicate cardiac computed tomography images with excellent image quality; filled circles (•) indicate good image quality; empty circles (), moderate image quality; and empty squares (□), poor image quality. Volume size and image quality had no significant influence on interobserver or intra-observer measurements in either orientation.