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. 2010 Apr 30;11(3):286–294. doi: 10.3348/kjr.2010.11.3.286

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Copyright © 2010 The Korean Society of Radiology

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 2 — Measurement of left atrial volume using 3D volume threshold-based method of cardiac multidetector CT.

A-C. Axial, sagittal, and coronal views of left atrium. Endocardial contours of left atrium were traced on axial slices. Lowest value of CT attenuation was applied to cover contrast-enhanced whole left atrial cavity within region of interest. Included left atrial volume was confirmed by CT attenuation in three-orthogonal planes.

D. Volume-rendering threshold image of left atrium. Pulmonary vein confluences and atrial appendage were excluded from left atrial volume measurement.