[Comparison between PET/CT and MRI in diagnosing lymph node metastasis and N staging of nasopharyngeal carcinoma].

Abstract

PET/CT is superior to MRI in diagnosing lymph node metastasis and N staging of nasopharyngeal carcinoma. The false-positive and false-negative assessment based on PET-CT scan findings may be caused by: (1) inflammatory hyperplastic node; (2) node with large areas of necrosis; (3) node in diameter less than spatial resolution limitation of PET.