Dose kernels describing S-values to each cell nucleus in a 2D layer of cells from activity of Lu-177 or Ac-225 in the source region of the center cell in units of Gy/Bq/s. The source region is either the cell cytoplasm or the extracellular membrane. Cells are either spherical with a 6.749 um radius, or cubic with a 10.875 um length. The kernels made of spherical cells have pixel sizes of 13.5 x 13.5 um (one cell size), while the kernels made of cubic cells have pixel sizes of 10.9 x 10.9 um (also one cell size). Each cell contains a nucleus, nuclear membrane, cytoplasm, and extracellular membrane.