Three-dimensional Anatomically Realistic Numerical Head Model Construction based on T1-weighted MRIs for Microwave Hemorrhagic Stroke Imaging

A 3-D anatomically realistic numerical brain model construction process based on real magnetic resonance imaging (MRI) images is presented in this paper. This phantom serves as a simulation experimental verification basis for later microwave detection of intracranial hemorrhage. This numerical model is derived from the T1-weighted MRIs of the patients. The MRI case images were processed by separating, labeling, and categorizing each biological brain tissue. Each slice is transformed into uniform grids mapping different brain tissues' dielectric properties. The 3-D finite-difference time-domain (3D-FDTD) numerical phantom verifies the feasibility of the proposed construction method. Compared with earlier models, the construction of this model follows the real human brain tissue structure, giving a more accurate experimental platform for various imaging simulation techniques.