Can I open the IMOD  files (*.mod) in Chimera? Or, Can I make a hand-drawn mask file in Chimera? I could apply several filters and masks in my iso-surface map, however, I don't know how to apply these options in Chimera. Moreover,  the reconstructed tomograms were shown to the inverted iso-surface map unlike IMOD.. Can I re-invert the iso-surface map in Chimera?

Best regards

Si Hoon Park