Breast reconstruction or augmentation methods are provided which generally include implanting a mammary prosthesis comprising a shell having a self sealing wall and defining an inflatable cavity, inflating the prosthesis by introducing a fluid into the cavity using a cannula inserted percutaneously into the self sealing wall, imaging the procedure to assist with guiding the needle, and repeating the steps of inflating, imaging and allowing tissue and skin to expand, until a desired aesthetic outcome is achieved.
