Fig 1. Boundary conditions and the geometry of the present study with different shapes of the tumor.

Since all of the tumors are not necessarily spherical, different shapes of the solid tumors are considered in this study. In all oblate, prolate, and spherical shapes, the volume of the tumors are constant. MWA coaxial antenna is placed at the center of the tumor. Thermal and electrical boundary conditions are applied to the wall of the tissue.