单项选择题
A.碘131标记MIBG B.锝99标记奥曲肽 C.碳11标记的羟基因麻黄素 D.氟18标记的RGD
A.大于50% B.大于60% C.大于70% D.大于80%
A.18F-FDG B.99mTc-ECD C.11C-AC D.125I