双能量CT与多层螺旋CT评估胃癌分化程度的对比  

Comparison of Dual Energy CT and Multi-Slice Spiral CT in Evaluating the Differentiation of Gastric Cancer

作　　者：吴守红[1] 翟红伟[1] 杨琦 WU shou-hong;ZHAI Hong-wei;YANG qi(Radiology Department of Fujian Provincial Hospital,Fujian Fuzhou 350001)

机构地区：[1]福建省立医院放射科,福建福州350001

出　　处：《中国医疗器械信息》2024年第8期18-21,共4页China Medical Device Information

摘　　要：目的:探讨双能量CT与多层螺旋CT对评估胃癌分化程度的价值。方法:选择2022年1月~2023年1月收治的134例行胃癌手术的患者作为研究病例,手术前CT平扫与双期增强扫描,其中67例采取MSCT平扫(简称MSCT组),67例实施DECT增强扫描(简称DECT组),将手术后病理学检查结果作为金标准,分为低分化组和中高分化组,比较低分化组与中高分化组胃癌MSCT参数、胃癌能谱参数定量、多个参数AUC以及诊断符合率。结果:静脉期CT值、CTv中,低分化胃癌组参数高于中高分化胃癌组,低分化胃癌组的NICa、NICv、γa、γv均高于中高分化胃癌组,DECT静脉期4个参数AUC均大于MSCT,且在DECT参数中,静脉期指标AUC大于动脉期,联合DECT静脉期参数NICv与γv,AUC最大,MSCT诊断符合率(97.01%)高于DECT诊断符合率(68.66%),差异呈现P<0.05。结论:双能量CTNICa、NICv能为术前评估胃癌分化程度提供新的指标,与传统的MSCT比较,其诊断价值更为显著。Objective:To explore the value of dual energy CT and multi-slice spiral CT in evaluating the differentiation degree of gastric cancer.Methods:134 patients with gastric cancer who underwent surgery from January 2022 to January 2023 were selected as study cases.Before surgery,plain CT scan and dual phase enhanced CT scan were performed.Among them,67 patients received plain MSCT scan(referred to as MSCT group)and 67 patients received enhanced DECT scan(referred to as DECT group).Postoperative pathological examination results were used as the gold standard,and they were divided into low differentiation group and medium and high differentiation group.MSCT parameters quantitative analysis of gastric cancer energy spectrum parameters,multiple parameter AUC,and diagnostic accuracy.Results:In the venous phase CT values and CTv,the parameters in the poorly differentiated gastric cancer group were higher than those in the medium to well differentiated gastric cancer group.The NICa,NICvγaγv was higher than that of the medium to high differentiation gastric cancer group,and the AUC of the four parameters in the venous phase of DECT was greater than that of MSCT.In addition,among the DECT parameters,the AUC of the venous phase was greater than that of the arterial phase.The combination of DECT venous phase parameter NICv andγv.The AUC was the highest,and the diagnostic accuracy rate of MSCT(97.01%)was higher than that of DECT(68.66%),with a difference of P<0.05.Conclusion:Dual energy CT NICa and NICv can provide new indicators for preoperative evaluation of gastric cancer differentiation.Compared with traditional MSCT,their diagnostic value is more significant.

关 键 词：双能量CT 多层螺旋CT 胃癌 分化程度 

分 类 号：R445.2[医药卫生—影像医学与核医学]