A recent edition of Nature News featured the successful application of a carbon nanotube (CNT)-based X-ray source to medical imaging. A group led by Professor O. Zhou (University of North Carolina in Chapel Hill, USA) has developed a micro 3D CT system. The main idea behind such very rapid scanning is simply electronic switching of 3D arrayed CNT X-ray sources, rather than mechanical motion. For more information, see the article, "Nanotubes sharpen X-ray vision", Zeeya Merali, Nature News, doi:10.1038/news.2009.744 The original research papers were published in April 2009 ("A dynamic micro-CT scanner based on a carbon nanotube field emission X-ray source", G Cao et al Phys. Med. Biol. 54, 2323 (2009))
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