目的探讨核磁共振影像对先天性胆管扩张症的术前定位价值。
Objective To evaluate the preoperative localization value of MRI and MRCP for congenital biliary dilatation.
参加者佩戴核磁共振影像仪，用以显示参与此活动的大脑影像。
Participants were hooked up to a functional magnetic resonance imaging machine, which produces an image that shows which parts of the brain are working during a given activity.
为了找出答案，研究人员检查了宇航员在飞行前后的脑部核磁共振影像。
To find out, researchers examined MRI's of astronauts' brains taken before and after flight.
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