Figure 1

Illustration of the IRE electrode placed near the heart. A: Sagittal B-mode US image demonstrates that the IRE electrode (arrow) is placed in the periphery of the hypoechoic lesion (arrowheads) in segment 4. The distance from the electrode to the inferior border of the heart (asterisk) is 1.7 cm based on US measurement. B: Sagittal B-mode US image demonstrates that the IRE electrode (arrow) is placed in the periphery of the hypoechoic lesion (arrowheads) in segment 2. The distance from the electrode to the inferior border of the heart (asterisk) is 1.0 cm based on US measurement.