Fig. 1From: Appearance of the levator ani muscle subdivisions on 3D transperineal ultrasoundMidsagittal (A and B) and coronal (C and D) plane, without and with segmentation. In B, the C shape of the iliococcygeal muscle (ICM) (blue) surrounding the puborectal muscle (PRM) (green); in D, the round shape of the external sphincter (brown). The red line in B shows the position of the coronal plane and in D, the position of the midsagittal plane (A and B). The ultrasound probe position with respect to the images is indicated by the arrowsBack to article page