Digimouse is a popular mouse atlas (Dogdas2007). FEM mesh Version 1 was created by Qianqian Fang using iso2mesh (Fang2009) version 1.0 and CGAL (CGAL2009). The mesh data were saved in matlab/octave .mat format. The low-resolution mesh, (1L), has 42301 nodes, 210161 tetrahedral elements, 149158 triangular surface elements and 21 tissue segmentations.