Medical device company !%Michelson Diagnostics%! plans to expand its new US subsidiary, Michelson Diagnostics Inc., to increase the availability of its skin cancer imaging products. The company has recruited Karen Miller Gillis as vice president of sales and marketing and general manager of the Boston-based US subsidiary. Michelson anticipates that its VivoSight OCT scanner, which uses four laser beams to improve image resolution, will provide dermatologists with new information about what happens below the surface of the skin of patients who receive treatment for nonmelanoma skin cancer.