 Publications on this topic are rare. Most reports address the results of palliative re-irradiation of NSCLC Ebara 2007, Jackson 1987, Montebello 1993, Tada 2005. The ones available on re-irradiation with curative intent used outdated techniques Okamoto 2002, Wu 2003. Only one recent publication has analyzed the results of 37 NSCLC patients of whom 9 were re-irradiated with at least 50 Gy using helical tomotherapy Kruser in press. 