Aspects of the technology described herein relate to systems and techniques for finite element analysis of alternating electric fields such as tumor treating fields. A system may be configured to receive medical data of the patient, generate segmented medical data by performing segmentation using the medical data of the patient, generate a model for a transducer array configuration and the generated segmented medical data, wherein the transducer array configuration is configured to produce alternating electric fields, and determine one or more metrics of the alternating electric fields for each of the one or more transducer array configurations. The system may further compare the metrics to reference values and/or metrics of another transducer array configuration and/or determine and/or recommend a transducer array configuration based on the metrics.