期刊文献+

宝石能谱 CT 成像碘含量测定法在肝细胞癌患者经动脉化疗栓塞术后随访中的应用 被引量:19

Value of quantitative iodine-based material decomposition images with gemstone spectral CT imaging in the follow-up of patients with hepatocellular carcinoma after TACE treatment
原文传递
导出
摘要 目的:量化评估宝石能谱CT成像碘含量测定法在肝细胞癌( HCC)患者经动脉化疗栓塞术( TACE)治疗后随访中的应用价值。方法对32例TACE治疗后的HCC患者行宝石能谱CT双期增强扫描。在碘基图上分别测量和比较残留肿瘤组织、凝固性坏死区和正常肝脏组织在静脉期和动脉期的碘浓度,计算不同时相的碘浓度差值( ICD)以及不同时相肿瘤组织或凝固性坏死区与正常肝脏组织的碘浓度对比度( LNR)。采用受试者工作特征曲线( ROC)分析ICD和LNR诊断肿瘤残留的效能。结果32例HCC患者中,测量的感兴趣区样本包括残留肿瘤组织28个,凝固性坏死区24个,病灶同层肝脏组织42个。在动脉期,凝固性坏死区的中位碘浓度为0.088μg/mm3,明显高于肿瘤组织(0.064μg/mm3,P=0.022)和肝脏组织(0.048μg/mm3,P=0.005),但肿瘤组织与肝脏组织的碘浓度差异无统计学意义( P=0.454)。在静脉期,肝脏组织的中位碘浓度为0.181μg/mm3,明显高于凝固性坏死区(0.140μg/mm3,P=0.042),但肝脏组织与肿瘤组织、肿瘤组织与凝固性坏死区的碘浓度差异均无统计学意义(均P>0.05)。凝固性坏死区的中位ICD为0.006μg/mm3,明显小于肿瘤组织(0.201μg/mm3,P<0.001)和肝脏组织(0.117μg/mm3,P<0.001),但肝脏组织与肿瘤组织的ICD差异无统计学意义( P=0.829)。在动脉期,凝固性坏死区的中位LNR为1.805,与肿瘤组织(1.310)的差异无统计学意义(P=0.389)。在静脉期,肿瘤组织和凝固性坏死区的中位LNR分别为0.647和0.713,差异无统计学意义( P=0.660)。 ROC分析结果显示,ICD诊断凝固坏死区与残留肿瘤组织的曲线下面积为0.804,诊断效能较高。结论通过宝石能谱CT的碘基图量化评估碘含量变化,可以提高CT在HCC患者TACE治疗后的随访价 Objective To investigate the value of quantitative iodine-based material decomposition images with gemstone spectral CT imaging in the follow-up of patients with hepatocellular carcinoma ( HCC) after transcatheter arterial chemoebolization ( TACE ) . Methods Consecutive 32 HCC patients with previous TACE treatment were included in this study.For the follow-up, arterial phase ( AP) and venous phase ( VP) dual-phase CT scans were performed with a single-source dual-energy CT scanner ( Discovery CT 750HD, GE Healthcare).Iodine concentrations were derived from iodine-based material-decomposition images in the liver parenchyma, tumors and coagulation necrosis ( CN ) areas.The iodine concentration difference (ICD) between the arterial-phase (AP) and venal-phase (VP) were quantitatively evaluated in different tissues.The lesion-to-normal parenchyma iodine concentration ratio ( LNR) was calculated.ROC analysis was performed for the qualitative evaluation, and the area under ROC ( Az ) was calculated to represent the diagnostic ability of ICD and LNR.Results In all the 32 HCC patients, the region of interesting ( ROI ) for iodine concentrations included liver parenchyma ( n =42 ) , tumors ( n =28 ) and coagulation necrosis ( n =24).During the AP the iodine concentration of CNs ( median value 0.088μg/mm3 ) appeared significantly higher than that of the tumors ( 0.064 μg/mm3 , P =0.022 ) and liver parenchyma (0.048μg/mm3 ,P=0.005) .But it showed no significant difference between liver parenchyma and tumors (P=0.454).During the VP the iodine concentration in hepatic parenchyma (median value 0.181 μg/mm3) was significantly higher than that in CNs (0.140 μg/mm3,P=0.042).There was no significant difference between liver parenchyma and tumors, CNs and tumors (both P〉0.05).The median value of ICD in CNs was 0.006 μg/mm3 , significantly lower than that of the HCC (0.201 μg/mm3 , P〈0.001) and hepatic parenchyma (0.117
出处 《中华肿瘤杂志》 CAS CSCD 北大核心 2015年第3期208-212,共5页 Chinese Journal of Oncology
关键词 肝细胞 能谱CT 诊断 经动脉化疗栓塞 Carcinoma,heptocellular Spectral computed tomography Diagnosis Transcatheter arterial chemoebolization
  • 相关文献

参考文献10

二级参考文献35

共引文献94

同被引文献165

引证文献19

二级引证文献137

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部