1. Objective To evaluate the value of 18 F-deoxyglucose (FDG) positron emission tomography (PET) in detecting the primary focus of metastatic cancer with an unknown primary.
   目的探讨18F-脱氧葡萄糖(FDG)正电子发射型体层摄影术(PET)全身显像在原发灶不明转移癌中的作用。
2. Objective To evaluate 18 F deoxyglucose positron emission tomography (FDG PET) in the detection of suspicious recurrence in head and neck cancers , as compared with CT/MRI imaging.
   目的探讨18F脱氧葡萄糖(FDG)正电子发射型体层摄影术(PET)在头颈部癌瘤复发的临床价值。

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