One drawback: a nonradioactive dye must be administered through the child's rectum before a CAT scan can be performed.
在做CAT射线之前,必须用一种非射性染料给孩肠染色。
One drawback: a nonradioactive dye must be administered through the child's rectum before a CAT scan can be performed.
在做CAT射线之前,必须用一种非射性染料给孩肠染色。
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