“CT contrast medium”的概念、定义、翻译、参考文献-科学参考

单词	CT contrast medium
释义	CT contrast medium Encyclopedia 医学CT对比剂释 CT contrast mediumCT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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