Figure 15. Leaflet valve. Surgitek reverse-adjustable double-lumen implant (placed 1985). Beveled back patch outside implant shell is shown here (thick arrow) with two gel fill points (short arrows), one for each silicone gel-filled lumen. Toward the center of the back patch is the 3-mm white dot and slit (long arrow) marking the entry point to the short Quin-Seal leaflet valve leading to the inner lumen. (The slit is not discernible on this photograph.) The MR imaging appearance of this implant is illustrated in Figures 58 and 59.