BURLINGTON, Mass., Jan. 20 -- The National Institutes of Health (NIH) Warren Grant Magnuson Clinical Center in Bethesda, Md., has installed a Perspecta Spatial 3D imaging system, developed by Actuality Systems Inc., for research in pinpointing tumor locations during radiofrequency tumor ablation, or RF ablation, in the liver. RF ablation is a minimally invasive treatment for cancer that is used as an alternative to surgery; the image-guided technique kills cancer cells by heating and destroying them. CAPTIONTITLE: The Perspecta Spatial 3D imaging system. 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