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ablation range
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  消融范围
     Methods Three hundred and five lesions of 239 patients with HCC were examined by both conventional ultrasound and real-time CEUS (SonoVue, MI<0.2) before radiofrequency ablation (RFA). Differences between conventional ultrasound and CEUS were compared and their influence on ablation range design and selection of treatment protocol was analyzed.
     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SonoVue),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。
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     Results One hundred ninety lesions (60.9%) were larger and 125 lesions showed a more irregular shape during the arterial phase of CEUS than in conventional ultrasound (P<0.01). Ablation range was enlarged in 163 lesions after CEUS.
     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;
短句来源
     Objective To evaluate the clinical value of contrast enhanced ultrasound(CEUS) for patients with hepatocellular carcinoma in identifying the ablation range and designing the treatment protocol before radiofrequency ablation(RFA) treatment and to compare the efficacy of RFA after CEUS with the efficacy of RFA after fundamental ultrasonography(US) without contrast.
     目的探讨射频消融(RFA)治疗前超声造影(CEUS)对制定消融范围及治疗策略的应用价值,并与RFA前未应用CEUS的治疗组比较疗效。
短句来源
     Conclusion CEUS is more accurate in identifying the size, shape and invasive range of HCC before RFA, therefore shows clinical importance in ablation range design and selection of treatment protocol.
     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。
短句来源
     Majority of complications are associated with expanding of ablation range resulting in the injury of normal tissues.
     大多数并发症的发生与消融范围过大,损伤了周围正常组织有关。
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  “ablation range”译为未确定词的双语例句
     The ablation range of laser ablation was being found.
     分析了鼻咽喉组织激光损伤二维尺度与光剂量间的关系,获取了激光消融的阈值范围。
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     Objective To investigate the ablation range of Cool-tip radiofrequency generator and its thermal effect on liver cells, intrahepatic artery, vein and biliary duct.
     目的研究射频热凝家兔肝组织的热效应范围,并观察肝细胞、肝内动脉、静脉及胆管组织的损伤情况。
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  相似匹配句对
     range from
     范围65.5-
短句来源
     The ablation range of laser ablation was being found.
     分析了鼻咽喉组织激光损伤二维尺度与光剂量间的关系,获取了激光消融的阈值范围。
短句来源
     The ablation depth was range of 78~187 μm.
     切削总量为78~187μm。
短句来源
     In the temperature range from ?
     40℃~60℃的工作温度范围内,本文研制的 AOCT 满足国际标准 IEC60044?
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     The testing of ablation rate
     透烧率的测定
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  ablation range
As opposed to generation in the ablation range, laser generation of ultrasound in the thermoelastic range does not damage the surface of the material.
      


In order to explore the method and feasibility or radiofrequency ablation of wide accessory pathway,six patients(male 4,female 2,mean age 35 2±6 5 years old)with left wide accessory pathway diagnosed by electrophysiologic study were ablated through right anterior oblique objection 30° The ideal target sites were carefully mapped along mitral annulum in left ventriculum Radiofrequency energy of 25 watts was delivered for l minute at every ideal target site until the pathway was blocked successfully The results...

In order to explore the method and feasibility or radiofrequency ablation of wide accessory pathway,six patients(male 4,female 2,mean age 35 2±6 5 years old)with left wide accessory pathway diagnosed by electrophysiologic study were ablated through right anterior oblique objection 30° The ideal target sites were carefully mapped along mitral annulum in left ventriculum Radiofrequency energy of 25 watts was delivered for l minute at every ideal target site until the pathway was blocked successfully The results showed the wide accessory pathway in 6 patients were ablated completely with mean ablation range 2 2±0 8 cm(1 6~2 9cm),mean ablation target sites 5 6±2 3(5~9)and mean ablation time 1 3±1 2 hours(1 1~3 1 hours) This suggests full understanding the eletrophysiologic characteristics of wide accessory pathway,careful mapping and ablating in a relatively large range may help increase the success rate of this type of ablation

将 6例具有宽旁道电生理特点的心动过速患者 (均为左侧旁路 )在右前斜位 30°于二尖瓣环心室侧细标靶点 ,每一理想靶点 2 5 W试消融 1min,直至完全阻断旁路。结果 :6例患者成功消融旁路 ,消融范围 1.6~2 .9cm,平均为 (2 .2± 0 .8) cm,消融靶点数 5~ 9次 ,平均为 (5 .6± 2 .3)次 ,消融时间为 1.1~ 3.1小时 ,平均为(1.3± 1.2 )小时。认为增强对宽旁道电生理特征的认识 ,耐心细致标测靶点 ,在较大范围消融 ,可提高宽旁道消融的成功率。

Objective To investigate the ablation range of Cool-tip radiofrequency generator and its thermal effect on liver cells, intrahepatic artery, vein and biliary duct. Methods Forty healthy New Zealand rabbits were divided into an experimental group and a control group. The rabbits of the experimental group were treated with one session of radio-frequency delivered by Cool-tip radio-frequency generator and killed at 1,5,10,15 days after the treatment. Histologic manifestations of the liver cells, intrahepatic...

Objective To investigate the ablation range of Cool-tip radiofrequency generator and its thermal effect on liver cells, intrahepatic artery, vein and biliary duct. Methods Forty healthy New Zealand rabbits were divided into an experimental group and a control group. The rabbits of the experimental group were treated with one session of radio-frequency delivered by Cool-tip radio-frequency generator and killed at 1,5,10,15 days after the treatment. Histologic manifestations of the liver cells, intrahepatic artery, vein and biliary duct were characterized under light microscope. Apoptosis detected by TUNEL served as the index of thermosensitivity. GPT,T-BIL,D-BIL level were also tested before and after the treatment. Results The ablation radius of the Cool-tip radio-frequency lesion generator was 2.5 cm. There were lesions of different degrees in liver cells, intrahepatic artery, vein and biliary duct.The apoptosis index of hepatocytes and biliary epithelial cells within 2 cm to the edge of coagulated region in the experimental group was higher than those in the control group(P<0.01). As well, the poptosis index of hepatocytes was also higher than that of biliary epithelial cells(P<0.01). Conclusion The tolerance to radio-frequency ablation of various tissues from high to low was as bile duct>artery>vein>liver cells. The thermosensitivity of the normal rabbit hepatocyte was higher than that of biliary epithelial cells to radiofrequency ablation. Apoptosis was correlated to the thermal effect induced by RFA.

目的研究射频热凝家兔肝组织的热效应范围,并观察肝细胞、肝内动脉、静脉及胆管组织的损伤情况。方法将40只家兔随机分为2组(实验组与对照组,每组20只),均分别剖腹暴露肝脏,于实验组家兔肝膈面插入射频针并给予射频热凝处理,对照组家兔手术操作与实验组相同,但不给予射频热凝处理。2组家兔分别于术后1,5,10,15d各处死5只,取肝脏不同部位进行常规切片染色,观察肝细胞、动脉、静脉及胆管组织的损伤情况。采用TUNEL法检测肝细胞、胆管上皮细胞的凋亡率,并测定家兔术前、术后血清GPT、T-BIL及D-BIL水平。结果通过组织学观察,发现该射频热凝治疗仪(单电极)对家兔肝组织的最大热效应损伤半径为2.5cm,在坏死区域内可见肝细胞、血管及胆管等均有程度不一的损伤。距凝固坏死区外边缘2.0cm范围内的肝细胞、胆管上皮细胞的凋亡指数均高于对照组相应部位细胞,差异有统计学意义(P<0.01);另外还发现实验组家兔肝细胞的凋亡指数也高于同区域胆管上皮细胞凋亡指数(P<0.01)。结论对射频热效应耐受性由高至低排列依次为:胆管>动脉>静脉>肝细胞,正常家兔肝细胞对射频热效应的敏感性大于胆管上皮细胞,细胞凋亡可能与射频热效应相关,即...

目的研究射频热凝家兔肝组织的热效应范围,并观察肝细胞、肝内动脉、静脉及胆管组织的损伤情况。方法将40只家兔随机分为2组(实验组与对照组,每组20只),均分别剖腹暴露肝脏,于实验组家兔肝膈面插入射频针并给予射频热凝处理,对照组家兔手术操作与实验组相同,但不给予射频热凝处理。2组家兔分别于术后1,5,10,15d各处死5只,取肝脏不同部位进行常规切片染色,观察肝细胞、动脉、静脉及胆管组织的损伤情况。采用TUNEL法检测肝细胞、胆管上皮细胞的凋亡率,并测定家兔术前、术后血清GPT、T-BIL及D-BIL水平。结果通过组织学观察,发现该射频热凝治疗仪(单电极)对家兔肝组织的最大热效应损伤半径为2.5cm,在坏死区域内可见肝细胞、血管及胆管等均有程度不一的损伤。距凝固坏死区外边缘2.0cm范围内的肝细胞、胆管上皮细胞的凋亡指数均高于对照组相应部位细胞,差异有统计学意义(P<0.01);另外还发现实验组家兔肝细胞的凋亡指数也高于同区域胆管上皮细胞凋亡指数(P<0.01)。结论对射频热效应耐受性由高至低排列依次为:胆管>动脉>静脉>肝细胞,正常家兔肝细胞对射频热效应的敏感性大于胆管上皮细胞,细胞凋亡可能与射频热效应相关,即射频热凝能引发肝细胞、胆管上皮细胞凋亡。

Objective To evaluate the clinical value of contrast enhanced ultrasound(CEUS) for patients with hepatocellular carcinoma in identifying the ablation range and designing the treatment protocol before radiofrequency ablation(RFA) treatment and to compare the efficacy of RFA after CEUS with the efficacy of RFA after fundamental ultrasonography(US) without contrast.Methods One hundred sixty-one patients with hepatocellular carcinoma(HCC) were suitable for percutaneous RFA and underwent US-guided RFA...

Objective To evaluate the clinical value of contrast enhanced ultrasound(CEUS) for patients with hepatocellular carcinoma in identifying the ablation range and designing the treatment protocol before radiofrequency ablation(RFA) treatment and to compare the efficacy of RFA after CEUS with the efficacy of RFA after fundamental ultrasonography(US) without contrast.Methods One hundred sixty-one patients with hepatocellular carcinoma(HCC) were suitable for percutaneous RFA and underwent US-guided RFA treatment.CEUS was performed for 77 patients pre-treatment(CEUS group) and fundamental US without contrast enhancement was performed for the remaining 84 patients pre-treatment(non-CEUS group).There were no significant differences in clinical data between the two groups;the average diameters of the lesions in CEUS group and non-CEUS group were(3.6±1.2) cm and(3.5±1.1) cm,respectively.Regular follow-up after treatment was performed using fundamental US and contrast-enhanced computed tomography(CECT) or CEUS(or both).No residue or local recurrence on CECT at least 6 months after treatment was classified as complete ablation.Results In the CEUS group,77 cases with 105 lesions were treated with RFA.There were 59 lesions(56.2%) that were larger during the arterial phase and 49 lesions(46.7%) that had a more irregular shape during the arterial phase than in fundamental US.Feeding vessels were detected with CEUS in 37 of 52 lesions larger than 3.5 cm(71.1%).CEUS showed 16 small lesions(≤2.0 cm) in 10 cases,5 of which had 5 hepatic distant recurrences after RFA which coexisted with liver cirrhosis.Another 5 cases had 11 satellite lesions around the main tumor.The average number of RFA sessions in the CEUS group and non-CEUS group were 1.2 and 1.5 respectively.During the 6 to 36 months of follow-up,the complete ablation rate in the CEUS group was significantly higher than that in the non-CEUS group(95.4% vs 87.8%,P=0.042).The average survival time in the CEUS group was longer than that of non-CEUS group [(34.2±1.2) months vs(30.2±1.6) months,P=0.028].Conclusions CEUS is used to accurately identify the tumor invasive range and sensitively detect minute or satellite lesions and the feeding vessel of the tumor.CEUS provides important information and evidence for planning the RFA protocol and may improve the efficacy of RFA treatment of liver tumors.

目的探讨射频消融(RFA)治疗前超声造影(CEUS)对制定消融范围及治疗策略的应用价值,并与RFA前未应用CEUS的治疗组比较疗效。方法161例原发性肝癌符合经皮RFA入选条件患者进行超声引导RFA治疗。其中,77例RFA前采用SonoVue行CEUS检查(CEUS组),84例RFA前未行CEUS检查(非CEUS组)。两组病例的临床资料无明显差异。肿瘤平均直径CEUS组(3.6±1.2)cm,非CEUS组(3.5±1.1)cm。治疗后采用常规超声、增强CT及(或)超声造影等影像检查进行规律性随访,至少随访6个月CT判断肿瘤灭活程度。结果CEUS组77例105灶行RFA治疗,造影动脉期显示59灶(56.2%)肿瘤范围较造影前增大,其中42灶(71.2%)造影前肿瘤边界不清;49灶(46.7%)肿瘤形态较常规超声更不规则,其中39灶(79.6%)为造影前边界不清。造影组>3.5 cm肿瘤52灶,37灶(71.1%)在动脉期显示主荷瘤血管。10例CEUS新发现≤2.0 cm病灶16个,其中3例为肝硬化随访病例,均进行RFA治疗。两组平均治疗次数为1.2次和1.5次。RFA后随访6~36个月,CEUS组完全灭活率高于...

目的探讨射频消融(RFA)治疗前超声造影(CEUS)对制定消融范围及治疗策略的应用价值,并与RFA前未应用CEUS的治疗组比较疗效。方法161例原发性肝癌符合经皮RFA入选条件患者进行超声引导RFA治疗。其中,77例RFA前采用SonoVue行CEUS检查(CEUS组),84例RFA前未行CEUS检查(非CEUS组)。两组病例的临床资料无明显差异。肿瘤平均直径CEUS组(3.6±1.2)cm,非CEUS组(3.5±1.1)cm。治疗后采用常规超声、增强CT及(或)超声造影等影像检查进行规律性随访,至少随访6个月CT判断肿瘤灭活程度。结果CEUS组77例105灶行RFA治疗,造影动脉期显示59灶(56.2%)肿瘤范围较造影前增大,其中42灶(71.2%)造影前肿瘤边界不清;49灶(46.7%)肿瘤形态较常规超声更不规则,其中39灶(79.6%)为造影前边界不清。造影组>3.5 cm肿瘤52灶,37灶(71.1%)在动脉期显示主荷瘤血管。10例CEUS新发现≤2.0 cm病灶16个,其中3例为肝硬化随访病例,均进行RFA治疗。两组平均治疗次数为1.2次和1.5次。RFA后随访6~36个月,CEUS组完全灭活率高于非CEUS组(95.4%对87.8%,P=0.042)。CEUS组生存期高于非CEUS组[(34.2±1.2)月对(30.2±1.6)月,P=0.028]。结论RFA前CEUS可清晰显示肿瘤浸润范围,灵敏发现卫星灶及其他区域微小病灶,确认荷瘤血管,为准确制定消融方案,施行治疗策略,整体覆盖灭活肿瘤提供了可靠的依据,从而有效地提高RFA对肝癌的治疗水平。

 
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