Skip to main content
. 2018 Jul 12;91(1090):20170686. doi: 10.1259/bjr.20170686

Figure 4.

Figure 4.

Normal appearance of Essure birth control device on 2D-TVUS (a, b) and 3D-TVUS (c, d). (a) Axial ultrasound image of the uterus showing both inserts in the cornual regions. This acquisition avoids the risk of duplicate imaging of the same insert that can happen if the probe is turned 180 degrees during the examination. (b) An oblique transverse image of the uterus showing the linear axis of the insert in the interstitial portion of the fallopian tube, crossing the right SUTJ. The linear axis is not coiled. The proximal end of the insert is in contact with the endometrium. The insert is not seen beyond the SUTJ. The serosal boundary is delineated by the dotted line. (c) Volume contrast 3D reconstructed image in the coronal plane demonstrating a uterus with two inserts in perfect position (1 + 2 + 3). The medial end of the left insert is in the uterine cavity. The medial end of the right insert is in contact with the endometrium. (d) Coronal reconstruction from a 3D ultrasound acquisition, showing a uterus with two inserts in perfect position (1 + 2 + 3). 2D, two-dimensional; 3D, three-dimensional; SUTJ, serosal-uterotubaljunction; TVU, trans-vaginal-ultrasound.