肝血管平滑肌脂肪瘤的超声造影表现

Objective To investigate the features of hepatic angiomyolipoma(AML) on contrast enhanced ultrasound (CEUS). Methods Ten pathologically proved AML lesions in 9 patients were evaluated by using baseline ultrasound and CEUS. CEUS was performed with contrast pulse sequencing technique and the contrast agent of SonoVue. Results On baseline ultrasound, 7 lesions exhibited mixed echoic,which was obvious hyperechoic combined with partly of hypoechoie; 3 lesions exhitited obvious hypereehoic. On color Doppler flow imaging artery signals were detected in all lesions. And the lesions had plenty or slightly plenty of artery supply,with resistive index about 0.53 4±0.10 (0.48~0.62). On CEUS, in the arterial phase, 9 lesions exhibited hyper-enhanced. In the portal phase, 5 lesions exhibited iso-enhancement,1 lesion was slightly hyper-enhancement and 3 lesions was hypo-enhancement. In the late phase 6 lesions were iso-enhancement and 3 lesions were hypo-enhancement. One lesion was all hypo-enhancement in all three phases. Conclusions There are some characteristic manifestations of hepatic AML in CEUS, which are helpful for the diagnosis of hepatic AML in a way,but we still need more experiences.     

肝血管平滑肌脂肪瘤的超声造影表现

Objective To investigate the features of hepatic angiomyolipoma(AML) on contrast enhanced ultrasound (CEUS). Methods Ten pathologically proved AML lesions in 9 patients were evaluated by using baseline ultrasound and CEUS. CEUS was performed with contrast pulse sequencing technique and the contrast agent of SonoVue. Results On baseline ultrasound, 7 lesions exhibited mixed echoic,which was obvious hyperechoic combined with partly of hypoechoie; 3 lesions exhitited obvious hypereehoic. On color Doppler flow imaging artery signals were detected in all lesions. And the lesions had plenty or slightly plenty of artery supply,with resistive index about 0.53 4±0.10 (0.48~0.62). On CEUS, in the arterial phase, 9 lesions exhibited hyper-enhanced. In the portal phase, 5 lesions exhibited iso-enhancement,1 lesion was slightly hyper-enhancement and 3 lesions was hypo-enhancement. In the late phase 6 lesions were iso-enhancement and 3 lesions were hypo-enhancement. One lesion was all hypo-enhancement in all three phases. Conclusions There are some characteristic manifestations of hepatic AML in CEUS, which are helpful for the diagnosis of hepatic AML in a way,but we still need more experiences.     

肝细胞性肝癌超声造影参数成像临床应用研究

目的 对肝细胞性肝癌(hepatocellular carcinoma,HCC)进行超声造影(contrast-enhanced ultrasound,CEUS)定量分析并进行动态血管模型(dynamic vascular patterns,DVP)参数成像的构建.方法 随机抽取30例接受CEUS检查并经临床或病理确诊的HCC患者,利用SonoLiver CAP定量软件对其进行定量分析;以HCC与周围肝实质的增强水平差值为参数进行DVP参数成像构建.结果 HCC的上升时间、达峰时间、平均渡越时间分别为(16.72±11.07)s、(29.92±14.13)s、(115.03±90.91)s,快于周围肝实质[分别为(26.59±9.60)s、(41.67±12.59)s、(159.26±1 23.74)s],差异均有统计学意义(均P<0.05);HCC的灌注指数为(90.41±102.49)%,高于周围肝实质的(54.10±24.99)%,差异有统计学意义(P=0.044).HCC的DVP曲线和DVP分布图可分为三种类型:消退型、未消退型及负向型,这三种类型在DVP曲线分别占76.7%(23/30)、20.0%(6/30)及3.3%(1/30),在DVP分布图分别占66.7%(20/30)、30.0%(9/30)及3.3%(1/30).结论 超声造影参数成像可直观反映HCC与周围肝实质血流灌注的差异.     

肝血管平滑肌脂肪瘤的超声造影表现

目的 探讨肝血管平滑肌脂肪瘤(angiomyolipoma,AML)的超声造影表现.方法 回顾性分析9例经病理确诊的肝AML患者共10个病灶的常规超声和超声造影表现.超声造影采用SonoVue和对比脉冲序列成像技术.结果 常规超声7个病灶呈现混合回声,即明显高回声伴片状低回声;3个病灶呈明显高回声.彩色多普勒超声检查所有病灶均测得动脉血供,且血供丰富或较丰富或稀少,阻力指数平均0.53±0.10(0.48～0.62).超声造影显示9个病灶动脉期均呈高增强;门脉期5个为等增强,1个为高增强,3个为低增强;延迟期6个为等增强,3个为低增强.1个病灶三期均为低增强.结论 超声造影上肝AML的增强表现具有一定特征性,可用于提示诊断,但仍需积累更多经验.     

肝血管平滑肌脂肪瘤的超声造影表现

Objective To investigate the features of hepatic angiomyolipoma(AML) on contrast enhanced ultrasound (CEUS). Methods Ten pathologically proved AML lesions in 9 patients were evaluated by using baseline ultrasound and CEUS. CEUS was performed with contrast pulse sequencing technique and the contrast agent of SonoVue. Results On baseline ultrasound, 7 lesions exhibited mixed echoic,which was obvious hyperechoic combined with partly of hypoechoie; 3 lesions exhitited obvious hypereehoic. On color Doppler flow imaging artery signals were detected in all lesions. And the lesions had plenty or slightly plenty of artery supply,with resistive index about 0.53 4±0.10 (0.48~0.62). On CEUS, in the arterial phase, 9 lesions exhibited hyper-enhanced. In the portal phase, 5 lesions exhibited iso-enhancement,1 lesion was slightly hyper-enhancement and 3 lesions was hypo-enhancement. In the late phase 6 lesions were iso-enhancement and 3 lesions were hypo-enhancement. One lesion was all hypo-enhancement in all three phases. Conclusions There are some characteristic manifestations of hepatic AML in CEUS, which are helpful for the diagnosis of hepatic AML in a way,but we still need more experiences.     

肝血管平滑肌脂肪瘤的超声造影表现

Objective To investigate the features of hepatic angiomyolipoma(AML) on contrast enhanced ultrasound (CEUS). Methods Ten pathologically proved AML lesions in 9 patients were evaluated by using baseline ultrasound and CEUS. CEUS was performed with contrast pulse sequencing technique and the contrast agent of SonoVue. Results On baseline ultrasound, 7 lesions exhibited mixed echoic,which was obvious hyperechoic combined with partly of hypoechoie; 3 lesions exhitited obvious hypereehoic. On color Doppler flow imaging artery signals were detected in all lesions. And the lesions had plenty or slightly plenty of artery supply,with resistive index about 0.53 4±0.10 (0.48~0.62). On CEUS, in the arterial phase, 9 lesions exhibited hyper-enhanced. In the portal phase, 5 lesions exhibited iso-enhancement,1 lesion was slightly hyper-enhancement and 3 lesions was hypo-enhancement. In the late phase 6 lesions were iso-enhancement and 3 lesions were hypo-enhancement. One lesion was all hypo-enhancement in all three phases. Conclusions There are some characteristic manifestations of hepatic AML in CEUS, which are helpful for the diagnosis of hepatic AML in a way,but we still need more experiences.     

肝硬化基础上低度和高度不典型增生结节的超声造影表现

目的 探讨肝硬化背景下低度与高度不典型增生结节的超声表现.方法 经病理确诊的17个低度和16个高度不典型增生结节接受了二维超声和超声造影检查.采用实时超声造影技术,造影剂为声诺维.结果 低度和高度不典型增生结节的二维超声和超声造影表现差异均无统计学意义(均P>0.05).造影后10个(30.3%)不典型增生结节表现为动脉期高增强,延迟期高或等增强;10个(30.3%)表现为动脉期开始为低增强,动脉晚期为等增强,并持续至延迟期;8个(24.3%)表现为动脉期高增强,延迟期低增强;4个(12.1%)表现为三期等增强;1个(3.0%)表现为动脉期等增强,延迟期低增强.结论 低度和高度不典型增生结节的超声表现相似;不典型增生结节的超声造影表现复杂,其主要超声造影表现与肝硬化结节及肝细胞肝癌不同,超声造影有助于诊断肝硬化背景下的不典型增生结节.     

管式炉蒸氨工艺的探讨

焦化厂常用的蒸氨工艺是用直接蒸汽将原料氨水中的氨蒸出,使处理后的氨水符合生物脱酚装置的要求,同时得到较高浓度的氨汽。由于直接蒸汽蒸氨工艺简单,得到世界各国的广泛采用。但是对于水资源匮乏地区的鸿基焦化,如果采用直接蒸氨工艺蒸氨．需直接蒸汽量10t／h、软水87600t／a,这是很大的水资源消耗。而且蒸汽量的93％成为蒸氨废水,增加了蒸氨废水量,所以还需要扩大锅炉房及生物脱酚装置的规模。采用管式炉循环加热蒸氨废水进行蒸氨,不仅节省水资源而且节省锅炉房的建设投资．降低了生物脱酚装置的生产负荷。     

煤沥青针状焦的现况

介绍了针状焦形成的基本原理、制取方法、市场情况、国内生产和使用现状。对国内生产技术水平进行了分析,并对国内建设项目提出了参考意见。认为现在应该加强宏观调控,加大开发力度,提高产品质量,而不是盲目扩大产量。     

肝血管平滑肌脂肪瘤的超声造影表现

Objective To investigate the features of hepatic angiomyolipoma(AML) on contrast enhanced ultrasound (CEUS). Methods Ten pathologically proved AML lesions in 9 patients were evaluated by using baseline ultrasound and CEUS. CEUS was performed with contrast pulse sequencing technique and the contrast agent of SonoVue. Results On baseline ultrasound, 7 lesions exhibited mixed echoic,which was obvious hyperechoic combined with partly of hypoechoie; 3 lesions exhitited obvious hypereehoic. On color Doppler flow imaging artery signals were detected in all lesions. And the lesions had plenty or slightly plenty of artery supply,with resistive index about 0.53 4±0.10 (0.48~0.62). On CEUS, in the arterial phase, 9 lesions exhibited hyper-enhanced. In the portal phase, 5 lesions exhibited iso-enhancement,1 lesion was slightly hyper-enhancement and 3 lesions was hypo-enhancement. In the late phase 6 lesions were iso-enhancement and 3 lesions were hypo-enhancement. One lesion was all hypo-enhancement in all three phases. Conclusions There are some characteristic manifestations of hepatic AML in CEUS, which are helpful for the diagnosis of hepatic AML in a way,but we still need more experiences.