Figure 1 | Scientific Reports

Figure 1

From: Morphological and functional parameters of left atrial appendage play a greater role in atrial fibrillation relapse after radiofrequency ablation

Figure 1

Quantitative measurement of left atrium and left atrial appendage (LAA). (A–C) In computed tomographic imaging, the coronary positioning line was put across the conjunction of the left atrium with LAA in the cross section (A,B) to obtain the cross section of the orifice of the LAA (C). The major and minor axes of the LAA were measured (C). (D) The perimeter of the LAA orifice was measured. (E,F) The left atrium and LAA imaging was obtained using cardiac function software for measuring the volume of the left atrium and LAA. The LAA depth was measured (F, lower part) from the most distal tip of LAA to the center of the cross section of the LAA orifice. The upper part in F is the left atrium and LAA.

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