High Fidelity Head/Shoulders Mesh:
Made up of 2 mm x 2 mm x 2.5 mm (vertical direction) FDTD cells, 17 tissue types and an
overall mesh size of 309 x 177 x 161 cells. Additional space may be added around the mesh
for insertion of phone handset or other electronic devices. The mesh size as
provided is about 8 million cell mesh and requires approximately 256 MBytes of RAM for
XFDTD calculation.
The High Fidelity Body Mesh:
Made up of 5 mm cubical FDTD mesh cells, 23 different tissue types, and an
overall mesh size of 136 x 87 x 397 cells. Again, some additional space around the
body may be added using the XFDTD 5.0 mesh merge function. This mesh as provided
is about 4 million cells and requires roughly 128 MBytes of RAM for XFDTD calculations.
Both High Fidelity meshes include the capability to automatically adjust the permittivity
and conductivity of the tissues for any specified frequency between 1 MHz and 20 GHz.
This saves the user the tedious effort to typing in these parameters for each tissue type
in the mesh as the desired frequency of interest changes. These high fidelity meshes provide
significantly more accurate detail for internal body structures.
They have application when internal EM fields are important, for example with implanted
medical devices. In order to protect the intellectual property of both Hershey Medical Center
and Remcom Inc., the high fidelity meshes are provided in an encrypted format so that they
can be used only with XFDTD 5.0. The user may modify the meshes and save the modified
meshes with XFDTD 5.0, but the modified meshes will then be usable only by XFDTD 5.0.
A special license is provided with each mesh purchase that allows the mesh to be utilized by
XFDTD 5.0. Also it should be understood that these meshes may not be used by organizations which may
be competing with The NMR group at Hershey Medical Center for funding or prior publication of research
results.
