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正电子发射断层成像仪
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正电子发射断层成像仪
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positron emission tomography
正电子发射断层成像仪
对注入病人体内的正电子药物发生正负电子湮灭过程产生的一对0.511兆电子伏的γ光子进行采集断层成像,并且提供三维图像的一种医用核显像设备。
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