Virtual non-contrast of the second-generation dual-source CT:the capability to display the adipose tissue of gastric serosa

VernacularTitle:第二代双源 CT 虚拟平扫对胃癌浆膜面脂肪显示能力的评估
Author: Li YANG ; Gaofeng SHI ; Runze WU ; Yang LI ; Xiaojia CAI
Publication Type:Journal Article
Keywords: computed tomography; dual energy; virtual non-contrast; gastric cancer
From: Journal of Practical Radiology 2014;(6):947-950
CountryChina
Language:Chinese
Abstract: Objective To evaluate the capability of virtual non-contrast (VNC)of the second-generation dual-source CT (DSCT), and to display the adipose tissue of gastric serosa.Methods 48 patients with gastric cancer undergoing preoperative DSCT and sur-gery were enrolled.The true non-contrast (TNC)values and VNC values of perigastric adipose tissue were measured and compared with conventional non-contrast scanning and VNC of arterial phase and venous phase.The VNC values of perigastric adipose tissue were compared between serosal involvement group and non-serosal involvement group.Results There was statistical difference be-tween TNC values and VNC values of perigastric adipose tissue (P <0.05),the absolute differences were under 13 HU.The differ-ence of VNC values between serosal involvement group and non-serosal involvement group was significant (P <0.05).Conclusion VNC of the second-generation DSCT can clearly display the adipose tissue of gastric serosa.It has certain capability in judging sero-sal involvement.VNC has the proficiency to replace conventional non-contrast scanning.