A 3D model of AC electrical conductivity of the head (or other body part) can be generated by obtaining both CT and MRI images of the head, and combining the CT and MRI images into a composite model that specifies a conductivity at each voxel of the composite model. Voxels in the composite model that correspond to bone (e.g., the skull) are derived from the CT image, and voxels that correspond to the brain (e.g., white matter, gray matter, etc.) are derived from the MRI image. In some embodiments, the 3D model of conductivity is used to determine the positions for the electrodes in TTFields (Tumor Treating Fields) treatment.
Creating Accurate Computational Head Models of Patients Using Datasets Combining MRI and CT Images