An antenna design for hepatic microwave ablation is simulated in a dielectric emulating liver tissue to determine antenna performance, SAR distribution, and thermal response.

A lowpass birdcage coil designed to operate at 64 MHz is simulated to show B fields in both unloaded and loaded conditions. When loaded with a heterogeneous human head model, the temperature rise caused by exposure to the fields of the coil is computed using XFdtd’s biological thermal sensor.

The performance of a basic cellular telephone worn on the hip of a human male is studied for varying positions of the wearer.

Signal propagation of a WiFi transmitter is evaluated in an aircraft interior, with and without passengers present.

This paper investigates the accuracy of the finite-difference time-domain (FDTD) method for separately estimating coil conductor and radiative loss contributions.

The simulation procedure allows the coil designer to get quick feedback on the performance of the device, without the time or cost of producing numerous prototypes. The further ability to simulate the structure in practical use, such as the coil around a body part, permits the designer to optimize the device under loaded conditions and ensure that the regulated limits such as SAR are within thresholds. In this article, a SAR analysis for an MRI system is presented using XFdtd.

This presentation describes the simulation of a hearing instrument (HI) device. The design was simulated in the presence of a homogeneous SAM phantom and an anatomically correct, heterogeneous head model. The simulation results illustrate the differences between the head models and highlight the more acceptable results for improved device safety.

This article from the April 2018 edition of Nature's Scientific Reports uses XFdtd to model a novel RF coil array for {1H}-13C MR metabolic measurements of the human calf muscle.