[en] In this work, a model of the behavior of the magnetic field flux density (MFFD) used in clinical treatments with radiofrequency is presented [Jackson, J. D., 1998]. In the literature it is reported that using ultrasonic or radio frequencies it is possible to make molecules resonate with certain frequencies [Joan Vidal-Jove, et al., 2015]. Using virtual modeling software, the simulation of 2 sets of 6 and 8 antennas with a radius of 2 cm and 132.57 MHz each, located on the perimeter of a cylinder with a radius of 10 cm, was performed. The software calculates the MFFD using the finite element method for the approximation of solutions of partial differential equations in a sphere of radius 0.5 cm placed at the isocenter simulating a cancerous tumor with maximum and minimum values for 8 antennas of 1.92 x 10 ^-6 T and 1.36 x 10^-7 T respectively. The distribution of the antennas on the cylinder allows to have a constant MFFD and therefore a resonance frequency that can be compared with that of some cancer cells and thus modify the way they respond to treatments. (author)