From PCB to Simulation: a workflow instruction fordesigning birdcage models from production data

摘要

Introduction: Field simulations of birdcage coils in MRI permit the analysis of magnetic excitation fields and of safety relevant Specific Absorption Rate (SAR) distributions in human tissue [1]. The development of birdcage coils requires an in-depth analysis of the excitation fields to ensure safe usage of the MR system. However, the possibility to transfer simulation results to the real world dependends on the quality of the underlying model. With continuously increasing computing power, more precise models can be simulated. A workflow is described for the development and evaluation of birdcage coils at 1.5 T. Using Printed Circuit Board (PCB) data, a one-to-one mapping of the coil's geometry into the simulation software is achieved. This assures that the simulated coil corresponds to the one built. Due to the flexible workflow, new design variations can be rapidly integrated and evaluated.