The patient receives an injection of a radio tracer that's taken up by rapidly proliferating tumor cells, but not by normal cells, and this is the key difference from mammography.
这位病人注射了放射性跟踪剂， 繁殖旺盛的肿瘤细胞会迅速吸收这种放射性跟踪剂， 正常细胞则不会。 这里显示造影片的巨大区别。