AIM:To evaluate the usefulness of real-time virtual sonography(RVS)in biliary and pancreatic diseases.METHODS:This study included 15 patients with biliary and pancreatic diseases.RVS can be used to observe an ultrasou...AIM:To evaluate the usefulness of real-time virtual sonography(RVS)in biliary and pancreatic diseases.METHODS:This study included 15 patients with biliary and pancreatic diseases.RVS can be used to observe an ultrasound image in real time by merging the ultrasound image with a multiplanar reconstruction computed tomography(CT)image,using pre-scanned CT volume data.The ultrasound used was EUB-8500with a convex probe EUP-C514.The RVS images were evaluated based on 3 levels,namely,excellent,good and poor,by the displacement in position.RESULTS:By combining the objectivity of CT with free scanning using RVS,it was possible to easily interpret the relationship between lesions and the surrounding organs as well as the position of vascular structures.The resulting evaluation levels of the RVS images were12 excellent(pancreatic cancer,bile duct cancer,cholecystolithiasis and cholangiocellular carcinoma)and 3 good(pancreatic cancer and gallbladder cancer).Compared with conventional B-mode ultrasonography and CT,RVS images achieved a rate of 80%superior visualization and 20%better visualization.CONCLUSION:RVS has potential usefulness in objective visualization and diagnosis in the field of biliary and pancreatic diseases.展开更多
目的:探讨实时弹性成像(real-time elastography,RTE)联合超声造影(contrast-enhanced ultrasound,CEUS)对甲状腺影像报告和数据系统(Thyroid Imaging Reporting and Data System,TI-RADS)4类结节良恶性的研究诊断价值。方法:选取二维...目的:探讨实时弹性成像(real-time elastography,RTE)联合超声造影(contrast-enhanced ultrasound,CEUS)对甲状腺影像报告和数据系统(Thyroid Imaging Reporting and Data System,TI-RADS)4类结节良恶性的研究诊断价值。方法:选取二维超声诊断为甲状腺TI-RADS 4类结节的102例患者共115个结节,依次行RTE及CEUS检查,以手术后病理学检查结果为金标准,分别绘制两种方法单独及联用的受试者工作特征(receiver operating characteristic,ROC)曲线,比较曲线下面积(area under curve,AUC),评价两种方法单独和联用对甲状腺TI-RADS 4类结节的诊断价值,并分析漏诊及误诊原因。结果:115个甲状腺TI-RADS 4类结节中,病理学诊断恶性58个,良性57个。RTE诊断甲状腺癌的灵敏度、特异度及准确率为82.75%、84.21%及83.48%。CEUS诊断甲状腺癌的灵敏度、特异度及准确率为86.21%、89.47%及87.83%。联合RTE与CEUS诊断甲状腺癌的灵敏度、特异度及准确率为82.75%、96.49%及89.57%。RTE、CEUS及两者联用的AUC分别为0.835、0.878及0.896,各诊断方法之间差异无统计学意义(P>0.05)。结论:RTE、CEUS及两者联用对TI-RADS 4类结节均有较高的诊断价值,需综合分析。展开更多
文摘AIM:To evaluate the usefulness of real-time virtual sonography(RVS)in biliary and pancreatic diseases.METHODS:This study included 15 patients with biliary and pancreatic diseases.RVS can be used to observe an ultrasound image in real time by merging the ultrasound image with a multiplanar reconstruction computed tomography(CT)image,using pre-scanned CT volume data.The ultrasound used was EUB-8500with a convex probe EUP-C514.The RVS images were evaluated based on 3 levels,namely,excellent,good and poor,by the displacement in position.RESULTS:By combining the objectivity of CT with free scanning using RVS,it was possible to easily interpret the relationship between lesions and the surrounding organs as well as the position of vascular structures.The resulting evaluation levels of the RVS images were12 excellent(pancreatic cancer,bile duct cancer,cholecystolithiasis and cholangiocellular carcinoma)and 3 good(pancreatic cancer and gallbladder cancer).Compared with conventional B-mode ultrasonography and CT,RVS images achieved a rate of 80%superior visualization and 20%better visualization.CONCLUSION:RVS has potential usefulness in objective visualization and diagnosis in the field of biliary and pancreatic diseases.