RF lesion creation and measurement
After the RF application, the lesions were cut out and cross-sectioned
at the center of the surface lesion, and macro images were taken. The
maximum lesion width, surface width, and lesion depth were measured in
each lesion (Figure 3) by the image analysis software ImageJ (NIH Image,
Bethesda, MD). The average values measured by two persons were adopted
to ensure objectivity.