Electrons can be very useful in the treatment of superficial tumors less than 6 cm deep. Electrons are, however, underutilized to a large extent. Until now, controlling dose distribution was problematic, and shaping the beam required handmade electron cutout devices (apertures) made from cerrobend, a federally regulated substance containing lead. .decimal has solved both these problems with BolusECTâ„¢ (electron bolus) and our Mold Room Replacement Program (copper electron cutouts).  Learn how .decimal can make electron therapy the “go-to” treatment option at your clinic for superficial tumors. Our Materials