胃癌双源CT虚拟平扫与常规平扫的比较分析

来源 :2013中华医学会影像技术分会第21次全国学术大会暨国际影像技术论坛 | 被引量 : 0次 | 上传用户:kobe_lilei
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目的:研究探索第二代双源CT(SOMATOM Definition Flash CT)虚拟平扫技术在进展期胃癌中的应用价值,比较虚拟平扫与常规平扫在显示进展期胃癌病变中的差异.方法:77例进展期胃癌患者采用常规平扫、双能量模式双期增强扫描,利用虚拟平扫"Liver VNC"后处理软件分别得到动脉期、静脉期两组虚拟平扫图像,并与常规图像分析对照,比较动脉期虚拟平扫、静脉期虚拟平扫、与常规平扫图像的病灶平均CT值、噪声(SD)、信噪比(SNR)以及图像质量的差异.
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