Comparison of diagnostic value of PET using 18-fluoro-2-deoxyglucose, CT and MRI in detecting skull base invasion of nasopharyngeal carcinomas

Objective We compared positron emission tomography (PET) using 18-fluoro-2-deoxyglucose (FDG), enhanced computed tomography (CT) and magnetic resonance imaging (MRI) in detecting skull base invasion of nasopharyngeal carcinomas (NPC) and to evaluate the value of these three methods in determining the existence of skull base invasion of nasopharyngeal carcinomas.