题目内容
乳腺癌半野切线源皮距照射定位时,内切野的中心放在
2021-12-11
A.预置的内切线的铅丝
B.预置的外切线的铅丝
C.预置的内切线铅丝外1cm
D.体中线偏患侧1cm
E.预置的内切线铅丝内1cm
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