the lesion detection rates in nasopharynx were 100%(22/22), 91.0%(20/22) and 91.0%(20/22) with COSEM/AC, COSEM/NC and FBP, respectively;

• COSEM/AC、COSEM/NC和FBP对鼻咽部恶性病灶的检出率分别为100%25(22/22)、91.；0%25(20/22)和91