Texture Features and PDL1 in CT-PET 18 FDG

Search correlation between texture features in CT-PET 18 FDG and overexpression of PDL1 in non-small cell lung carcinomas during the inital staging. The hypothesis is that overexpression of PDL1is correlated with at least one texture feature among those selected. 84 CT-PET 18 FDG at the initial staging of a non small cell lung carcinoma (adenocarcinoma or squamous cell carcinoma), whose the biopsed site was the primitive site or the drainage lymphadenopathy, without previous treatment, were recruited and analyzed by a software allowing to estimate texture features.