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Figure 4 Measurements of the left inferior pulmonary vein (LIPV) with multislice computed tomography in two directions (left and middle panels) using multiplanar reformatting, and with intracardiac echocardiography (right panel). (Left panel) Measurements in the anterior-posterior direction in the transversal orthogonal plane. The green line is placed parallel to the LIPV, and depicts the coronal plane, which is used to measure the ostium in the superior-inferior direction (middle panel). (Right panel) Measurement of the LIPV (upper panel) and of a common ostium of the left pulmonary veins (lower panel) using intracardiac echocardiography. AP = anterior-posterior; SI = superior-inferior; other abbreviations as in Figure 1.
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