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CT对比剂
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CT对比剂
Encyclopedia
医学
CT对比剂
释
CT contrast medium
CT对比剂
在人体正常组织间缺乏天然对比,或病灶与正常组织之间密度相同或相近,或病灶太小而难以在CT平扫检查中清晰显示时,人为将某种物质引入体内,以达到增加人体不同组织之间、病灶与正常组织之间的密度差异,充分展示组织结构及病灶特征的目的,这种所引入的物质即称为对比剂,又称造影剂。
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involution principle
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