实时组织弹性成像在评价肝肿瘤中的应用价值

Objective To explore the imaging features of liver tumors with real-time tissue elastography.Methods Eighty-five liver lesions in 67 cases were scanned with conventional ultrasonography and elastography using HI-Vision900 system and then assessed with grade scores.Results on ultrasound were compared with those on pathology.Results Majority of lesions with grade a-b on elastography were identified as benign on pathology, while most of masses with grade c-e on elastography were confirmed as malignant on pathology.The sensitivity, specificity and accuracy were 93.5%, 87.0% and 91.8% for elastography to detect malignant lesions,74.2% ,73.4% and 74.1% for conventional ultrasound.The Kappa value of two doctors on elastography in group Ⅰ (the depth of the lesion ≤10cm) was significantly higher than group Ⅱ (the depth of the lesion ＞10cm).Conclusions Real-time tissue elastography of liver tumors provides a new convenient,non-invasive diagnostic methods,contribute to identify the benign and malignant live tumors.     

实时组织弹性成像在评价肝肿瘤中的应用价值

Objective To explore the imaging features of liver tumors with real-time tissue elastography.Methods Eighty-five liver lesions in 67 cases were scanned with conventional ultrasonography and elastography using HI-Vision900 system and then assessed with grade scores.Results on ultrasound were compared with those on pathology.Results Majority of lesions with grade a-b on elastography were identified as benign on pathology, while most of masses with grade c-e on elastography were confirmed as malignant on pathology.The sensitivity, specificity and accuracy were 93.5%, 87.0% and 91.8% for elastography to detect malignant lesions,74.2% ,73.4% and 74.1% for conventional ultrasound.The Kappa value of two doctors on elastography in group Ⅰ (the depth of the lesion ≤10cm) was significantly higher than group Ⅱ (the depth of the lesion ＞10cm).Conclusions Real-time tissue elastography of liver tumors provides a new convenient,non-invasive diagnostic methods,contribute to identify the benign and malignant live tumors.     

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.     

The use of contrast-enhanced ultrasonography in the selection of patients with hepatocellular carcinoma for radio frequency ablation therapy.

OBJECTIVE: The purpose of this study was to evaluate the use of contrast-enhanced ultrasonography (CEUS) in selecting patients with hepatocellular carcinoma (HCC) for radio frequency ablation (RFA). METHODS: One hundred seventy-nine patients with HCC were divided into 2 groups before receiving RFA: a CEUS group and a control group. The patients were concatenated and alternately apportioned into these 2 groups. In the CEUS group, 92 patients underwent pre-RFA CEUS using the contrast agent sulfur hexafluoride and enhanced computed tomography or magnetic resonance imaging before RFA for selecting suitable cases for RFA, and in the control group, conventional ultrasonography and enhanced computed tomography or magnetic resonance imaging were performed in 87 patients for selecting patients. RESULTS: In the CEUS group, 9 patients (9.8%) were excluded for RFA therapy by CEUS. The other 83 patients (90.2%), with a total of 114 lesions, were treated by RFA. In the control group, 5 patients (5.7%) were excluded for RFA. The other 82 patients (94.3%), with a total of 107 lesions, were treated by RFA. During the follow-up period of 18 to 50 months, the primary technique effectiveness rates in the CEUS and control groups were 94.7% and 87.9%, respectively (P = .1182). The local tumor progression rate, the new HCC rate, and the repeated RFA rate of the CEUS group were significantly lower than those of the control group (P = .033, .004, and .001, respectively). CONCLUSIONS: Pre-RFA CEUS provides important information for selecting suitable patients for RFA. The use of CEUS in selecting patients with HCC can decrease post-RFA local tumor progression and improve the efficacy of RFA therapy.     

超声造影对肝脏恶性肿瘤射频治疗的疗效评估

目的探讨实时超声造影在肝脏恶性肿瘤射频治疗疗效评估的临床应用价值。方法对149例肝脏恶性肿瘤患者(168个病灶)在射频消融治疗后进行Sonovue实时超声造影检查,并与增强CT检查比较。结果 168个病灶中实时超声造影检查显示37个病灶有残留,增强CT检查显示39个病灶有残留。结论超声造影是评价肝恶性肿瘤射频消融治疗疗效的一种可靠方法。     

超声造影对肝癌微波消融治疗适应症选择的应用评价

目的评价超声造影对制定肝癌微波消融治疗方案的价值。方法 116例患者,共130个肝癌病灶,微波消融治疗前行常规灰阶超声和超声造影检查。结果 51个病灶(39.2%,51/130)CEUS检查后,病灶的最大径线较常规灰阶超声的测值增大;除了原130个病灶外,CEUS检查后另发现9个常规灰阶超声未能显示的新病灶,这些病灶均经病理或其他影像技术证实;共33个病灶(25.3%,33/130)可清晰地显示滋养血管。根据微波消融治疗入选标准,共111例患者,123个病灶接受超声引导下微波消融治疗。结论在微波消融治疗前,超声造影可以帮助了解患者肝癌病灶的性质、大小、数目和滋养血管等情况,有助于微波治疗适应症的选择和治疗方案的制定。     

超声造影对肝转移癌射频消融的应用价值

目的 探讨超声造影(CEUS)在射频消融(RFA)治疗肝转移癌中的应用价值.方法 141例经临床及病理确诊并拟行RFA的肝转移癌患者,其中102例行CEUS检查,86例被确定符合RFA适应证(A组)为研究对象;同期RFA前未行CEUS检查的39例定为对照组(B组).根据造影灌注特征及病灶数目、大小、形态、浸润范围、位置、与周围结构关系等确定RFA适应证并制定方案进行治疗;B组根据常规超声及CT或MR诊断结果治疗.结果 102例CEUS后计16例确定为非RFA适应证,其中3例10个灶经6～10个疗程化疗后显示病灶内或周边无强化征象,考虑无活性;13例造影后显示病灶浸润范围大于8 cm或多于7个灶或紧邻膈顶、第二肝门等部位并分界不清等.A组中36例(41.9%)病灶增多1～3个(计58灶),大小约8～15 mm,其中79.4%(46/58个灶)仅在实质期显示,共计86例209个灶行RFA治疗;造影后49.7%(75/151灶)显示较原病灶范围增大,其中69.3%(52/75灶)在动脉期增强范围增大,30.7%(23/75灶)在廓清时弱回声范围增大,增大范围均被消融治疗.经1～3个月增强CT随访,肿瘤灭活率A组为94.7%(198/209),B组为87.6%(99/113);2～17个月局部复发A组为7.1%(15/209),B组为14.1%(16/113);A组37.2%(32/86例)出现新生转移灶,B组为43.5%(17/39例);两组灭活率及复发率差异均有统计学意义.结论 超声造影可为射频治疗肝转移癌适应证的选择和治疗范围的确定提供参考依据,从而有效提高疗效并降低复发率,是RFA治疗肝转移癌重要的辅助方法.     

超声造影对射频消融阻断肝癌血供的评价及应用价值

目的探讨超声造影（CEUS）评价经皮射频消融（RFA）阻断肝癌血供的效果以及指导RFA治疗的应用价值。方法选择2006年1月至2007年6月北京大学肿瘤医院就诊的71例肝癌患者共75个病灶,均为富血供肝癌,均因不宜行动脉栓塞化疗术（TACE）或TACE疗效不佳拟行RFA。所有患者均经超声引导下穿刺活检病理证实。71例患者随机分为经皮消融阻断荷瘤血管（PAA）＋褂1A组与单纯RFA组2组。PAA＋RFA组38例患者共39个病灶,首先行CEuS确认肿瘤荷瘤血管及浸润范围,并在彩色多普勒超声引导下进行PAA;即刻行CEUS评估肿瘤区域灌注及荷瘤血管阻断程度,并指导沿肿瘤外周区域及血供区域行肿瘤整体消融。单纯RFA组33例患者共36个病灶,于常规超声引导下进行消融,按计算方案及定位模式治疗,先消融肿瘤深部或临近其他脏器区域。治疗后1、3、6个月对2组患者行增强CT评价疗效。应用t检验比较2组患者消融病灶个数差异,应用矿检验比较2组患者治疗后1、6个月肿瘤病灶灭活率差异。结果PAA＋RFA组患者PAA后即刻CEUS显示31个病灶（79．5％,31／39）瘤内灌注缺失范围超过70％,其中13个病灶（33．3％,13／39）显示肿瘤整体灌注缺失呈边界清晰规整的“日全食”征;8个病灶（20．5％,8／39）灌注缺失范围达40％～70％。PAA＋RFA组38例患者共39个病灶PAA前彩色多普勒超声检查示42支主荷瘤血管良好显示;PAA后即刻彩色多普勒血流成像显示35支（83．3％,35／42）荷瘤血管被阻断,3支（7．1％,3／42）血管血流信号明显减少。PAA＋RFA组每个肿瘤平均消融（3．18±1．42）个球灶,较单纯RFA组每个肿瘤平均消融（4．32±1．56）个球灶少,且差异有统计学意义（t=-2．524,P=0．015）。治疗后1个月PAA＋RFA组肿瘤病灶灭活率为92．3％（36／39）,高于单纯RFA组的66．7％（24／35）,且差异有统计学意义（x^2=8．264,P=0．001）。结论CEUS证实PAA可成功阻断或减少荷瘤血供,增大射频凝固坏死区,有效降低富血供大肿瘤RFA复发率;重视CEUS指导PAA下RFA治疗,可减少消融病灶数目,有较高的应用价值。     

肝癌射频消融术后超声造影引导下无水乙醇治疗肝癌的临床价值

目的：研究与常规超声引导相比较,超声造影(CEUS)引导下无水乙醇治疗射频消融术(RFA)后残存的肝癌有无优越性。方法：61例原发性肝癌的患者RFA术后行无水乙醇注射进行补充治疗,根据引导方式不同分为治疗组和对照组,治疗组运用超声造影引导方式,对照组采用常规超声引导方式,术后1个月对治疗病灶进行超声造影及增强CT的评价。结果：治疗组30个病灶,28个病灶达到完全灭活,2个病灶存有残存活性区达到部分灭活。对照组31个病灶,22个病灶达到完全灭活,9个病灶达到部分灭活。两者有统计学差异,(P＜0.05)。结论：运用超声造影引导可以有效的提高肝癌RFA术后无水乙醇治疗肝癌的疗效。     

实时超声造影在肝癌射频消融治疗前的应用研究

目的　探讨肝癌射频消融（RFA）前实时超声造影对确定消融范围和选择治疗方案的应用价值。方法　对RFA前239例肝癌患者315个病灶进行常规超声和低机械指数（MI〈0．2）实时超声造影检查（造影剂为Sono　Vue），比较分析肝癌常规超声与超声造影的图像差异及其对确定消融范围和选择治疗方案的影响。结果　192个病灶（60．9％）超声造影后肿瘤大小测值较造影前明显增大（P〈0．01），其中163个病灶设计消融范围较超声造影前明显扩大，29例因肿瘤≥6cm而改为手术切除；125个病灶（39．7％）超声造影后肿瘤形态更加不规则（P〈0．01），其中16例因显示形态不规则的肿瘤邻近重要结构而改为手术切除。结论　与常规超声比较，RFA前超声造影可以更清晰、更准确地显示肝癌的大小、形态和浸润范围，为确定消融范围和选择治疗方案提供可靠的依据。     

实时超声造影与增强螺旋CT检出恶性肿瘤肝转移灶的临床研究

目的 比较常规超声、超声造影及增强CT对恶性肿瘤肝转移灶的检出能力。方法 应用超声造影剂SonoVue及反向脉冲谐波造影成像技术，对73例已确诊为恶性肿瘤并疑有肝转移的患者进行超声造影检查，与常规超声及增强CT结果进行比较。结果 常规超声在67例患者中检出176个转移灶，6例未显示病灶的患者超声造影后检出肝内转移灶，46例患者（63、0％）超声造影较常规超声多检出119个转移灶（P〈0、01），89、9％的新检出病灶〈2cm，最小者0．3cm。13例患者超声造影较增强CT多检出44个亚厘米转移灶（P〈0．01），2例患者增强CT较超声造影多检出3个转移灶。结论 超声造影能够明显提高恶性肿瘤肝内小转移灶的检出能力，对亚厘米转移灶的检出优于增强CT，超声造影对恶性肿瘤临床分期及治疗方案的选择有较高的应用价值。     

实时影像虚拟导航系统在肝癌微创治疗中的初步应用

目的 应用实时影像融合虚拟导航技术对常规超声显示不佳的肝癌病灶行经皮肿瘤微创治疗,明确此影像技术的安全性、可行性及临床应用价值.方法 15例患者共22个肝癌病灶接受虚拟导航引导下经皮消融术,并于术后1月内经增强CT/MR评定消融效果.结果 20个病灶完全消融,2个病灶有局部残留.未出现与治疗相关的并发症.结论 实时影像虚拟导航系统能精确定位病灶,引导穿刺和监控治疗,特别对常规超声不显示的肝癌病灶,虚拟导航技术更显示出优越性.     

实时影像虚拟导航系统在肝癌微创治疗中的初步应用

目的 应用实时影像融合虚拟导航技术对常规超声显示不佳的肝癌病灶行经皮肿瘤微创治疗,明确此影像技术的安全性、可行性及临床应用价值.方法 15例患者共22个肝癌病灶接受虚拟导航引导下经皮消融术,并于术后1月内经增强CT/MR评定消融效果.结果 20个病灶完全消融,2个病灶有局部残留.未出现与治疗相关的并发症.结论 实时影像虚拟导航系统能精确定位病灶,引导穿刺和监控治疗,特别对常规超声不显示的肝癌病灶,虚拟导航技术更显示出优越性.