Establishment of Real Human Head Conductivity Model with Ventricular Structure used in TMS Simulation Study

For accurate simulation studies on distribution of electromagnetic field induced by Trancranial Magnetic Stimulation, a real human head conductivity model with deep cerebral structure was reconstructed from MRI raw data, by using of MIMICS and ANSYS. This model reflects geometric structural information of Scalp, Skull, Cerebrospinal Fluid (CSF), Gray Matter, White Matter, Cerebellum, Ventricle and Eye-balls. The ventricular structure has relatively higher conductivity, whose effect on induced field could not be neglected. This paper mainly introduces the method to establish the ventricle part of the entire head model, which is used for ANSYS low-frequency magnetic simulation, while the way to generate other parts is similar and accomplished. On the platform of-fered here, study on specific individual subject would be easy and practicable. Deep structures will be produced vectorial in the future work.