期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于T_2加权图像的纹理分析:不同转移部位间肾癌纹理特征的对比 被引量:11
1
作者 白旭 王海屹 +4 位作者 叶慧义 许伟 张晓晶 黄庆波 刘震昊 《放射学实践》 北大核心 2018年第8期794-799,共6页
目的:利用磁共振T_2加权图像纹理分析方法,探讨发生不同部位转移(肺、骨、区域淋巴结)的肾透明细胞癌(ccRCC)影像特征的差异。方法:回顾性分析25例经影像及病理证实发生单一部位转移的ccRCC患者的MRI资料,其中发生肺转移7例,发生骨转移9... 目的:利用磁共振T_2加权图像纹理分析方法,探讨发生不同部位转移(肺、骨、区域淋巴结)的肾透明细胞癌(ccRCC)影像特征的差异。方法:回顾性分析25例经影像及病理证实发生单一部位转移的ccRCC患者的MRI资料,其中发生肺转移7例,发生骨转移9例,发生区域淋巴结转移9例。所有患者行肾脏3.0T MR扫描,利用软件工具在T_2加权图像上逐层对病灶进行ROI勾画并融合为感兴趣容积(VOI),获得93个纹理特征参数。使用非参数检验对3组ccRCC原发灶的特征参数进行统计学分析,确定有统计学差异的特征参数并进行ROC曲线分析。结果:基于T_2加权图像生成的93个肿瘤特征参数中,共有12个参数在3组间的差异具有统计学意义(P<0.05)。将3组病例分别划分为二分类变量后,有和无区域淋巴结转移组之间未发现有统计学差异的参数;而肺转移与非肺转移组之间有统计学差异的参数有19个,其中病灶表面积的ROC曲线下面积(AUC)最大,为0.881±0.080(95%CI为0.689~0.975);骨转移与非骨转移组之间有统计学差异的参数有14个,其中灰度不均匀性的AUC最大,为0.875±0.070(95%CI为0.682~0.972)。结论:发生不同部位转移(肺、骨、区域淋巴结)的ccRCC原发灶的影像组学特征存在差异,纹理分析或可作为一种预测ccRCC转移部位的有效诊断方法。 展开更多
关键词 肾癌 转移部位 磁共振成像 T2加权成像 纹理分析
下载PDF
Effect of resection following downstaging of unresectable hepatocelluar carcinoma by transcatheter arterial chemoembolization 被引量:19
2
作者 Shi Xian-jie Jin Xin +5 位作者 Wang Mao-qiang Wei Li-xin ye hui-yi Liang Yu-rong Luo Ying Dong Jia-hong 《Chinese Medical Journal》 SCIE CAS CSCD 2012年第2期197-202,共6页
Background This retrospective study was undertaken to analyze the outcome of hepatic resection in fifty-two patients with unresectable hepatocellular carcinoma (HCC) between January 2004 and December 2008.Methods Am... Background This retrospective study was undertaken to analyze the outcome of hepatic resection in fifty-two patients with unresectable hepatocellular carcinoma (HCC) between January 2004 and December 2008.Methods Among these fifty-two patients,the mean diameter of the tumor was 7.9 cm (4.4-15.5 cm,median 8.5 cm) prior to the first transcatheter arterial chemoembolization (TACE).After 1-6 times of TACE (median 2),the median tumor diameter was reduced to 4.2 cm (0-8.4 cm) prior to resection.The duration between the last TACE treatment and sequential resection varied from one to six months (median 2.7 months).Serum α-fetoprotein (AFP) levels were abnormal in thirty-eight out of the fifty-two patients.In AFP producing HCCs,AFP levels returned to normal (≤400 μg/L) in twenty-five out of thirty-eight patients.Hepatic segmentectomy,multiple hepatic segmentectomy or partial hepatic resection were performed in forty-five patients,two underwent extended left hemihepatectomy,and one underwent right posterior branch portal vein thrombectomy.One patient received a right hemihepatectomy and three had left hemihepatectomies.Results Complete tumor radiological response (CR) occurred in five patients (9.6%).There were three cases of perioperative mortality in the fifty-two patients (5.8%).One patient underwent salvaged orthotopic liver transplantation,and twenty-one patients observed tumor recurrence within two years.The 1-,3- and 5-year survival rates of the fifty-two patients were 77.0% (n=40),55.0% (n=29),and 52.0% (n=28),respectively.The median survival time after surgery was 49 months (95% confidence interval 7.5-52.7 months).Conclusions TACE treatment provides a better chance for HCC resection in patients initially diagnosed with unresectable HCC.Furthermore,liver resection should be performed once the tumor is downstaged to be compatible for successful resection 展开更多
关键词 hepatocellular carcinoma tumor downstaging transcatheter arterial chemoembolization HEPATECTOMY
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部