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   ultrasound ablation 在 心血管系统疾病 分类中 的翻译结果: 查询用时:0.637秒
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  超声消融
    This study was designed to observe the effects of acoustic power, duration, repetitive ablations, tissue-transducer interface temperature and different sites on the ultrasound ablation in vitro.
    本研究的目的在于观察声功率、消融时间、消融次数、换能器-组织接触表面的温度、不同部位心室肌及不同类型换能器等因素对超声消融效果的影响;
短句来源
    Results In group A, the stenosis degree was decreased after endovascular ultrasound ablation, from the initial 84.1%±4.7% to 40.1%± 15.3% (P<0.05) without any complications. The residual stenosis was less than 30% in 5 cases. The residual stenosis in group A was significantly higher than that in group B (P<0.01).
    结果 A组经单纯血管内超声消融治疗后狭窄程度由 (84 .1± 4 .7) %降为 (4 0 .1± 15 .3) % (P <0 .0 5 ) ,无 1例并发症 ,其中有 5例治疗后残余狭窄 <30 % ,但残余狭窄仍显著高于B组 (P <0 .0 1) ;
短句来源
    For 18 patients with peripheral arterial atherosclerotic plaques, the stenosis degree was decreased after pure ultrasound ablation, from preoperative 87.8%±7.6% to postoperative 41.2%±9.4% (P<0.05).
    18例外周动脉粥样硬化者经单纯血管内低频高能超声消融术后 ,平均狭窄程度也由术前的 (87.8± 7.6 ) %降为 (4 1.2± 9.4 ) % (P <0 .0 5 )。
短句来源
    Result The average time to finish ultrasound ablation of VC and the time exposing to X ray were less than radiofrequency ablation (25 ± 13 min vs 72±18 min,8±3 min vs 6±11 min; P<0.01), and more easy to reach electrical isolation in ultrasound ablation group;
    结果超声消融组的手术操作时间、暴光时间均小于射频组(25±13 min vs72±18 min,P<0.01;8±3 min vs 26±11 min,P<0.01),且容易达到消融终点(电隔离);
短句来源
    Experimental Study of Cardiac Ultrasound Ablation in Canine Heart
    超声消融心肌治疗心律失常的实验研究
短句来源
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  超声消融
    This study was designed to observe the effects of acoustic power, duration, repetitive ablations, tissue-transducer interface temperature and different sites on the ultrasound ablation in vitro.
    本研究的目的在于观察声功率、消融时间、消融次数、换能器-组织接触表面的温度、不同部位心室肌及不同类型换能器等因素对超声消融效果的影响;
短句来源
    Results In group A, the stenosis degree was decreased after endovascular ultrasound ablation, from the initial 84.1%±4.7% to 40.1%± 15.3% (P<0.05) without any complications. The residual stenosis was less than 30% in 5 cases. The residual stenosis in group A was significantly higher than that in group B (P<0.01).
    结果 A组经单纯血管内超声消融治疗后狭窄程度由 (84 .1± 4 .7) %降为 (4 0 .1± 15 .3) % (P <0 .0 5 ) ,无 1例并发症 ,其中有 5例治疗后残余狭窄 <30 % ,但残余狭窄仍显著高于B组 (P <0 .0 1) ;
短句来源
    For 18 patients with peripheral arterial atherosclerotic plaques, the stenosis degree was decreased after pure ultrasound ablation, from preoperative 87.8%±7.6% to postoperative 41.2%±9.4% (P<0.05).
    18例外周动脉粥样硬化者经单纯血管内低频高能超声消融术后 ,平均狭窄程度也由术前的 (87.8± 7.6 ) %降为 (4 1.2± 9.4 ) % (P <0 .0 5 )。
短句来源
    Result The average time to finish ultrasound ablation of VC and the time exposing to X ray were less than radiofrequency ablation (25 ± 13 min vs 72±18 min,8±3 min vs 6±11 min; P<0.01), and more easy to reach electrical isolation in ultrasound ablation group;
    结果超声消融组的手术操作时间、暴光时间均小于射频组(25±13 min vs72±18 min,P<0.01;8±3 min vs 26±11 min,P<0.01),且容易达到消融终点(电隔离);
短句来源
    Experimental Study of Cardiac Ultrasound Ablation in Canine Heart
    超声消融心肌治疗心律失常的实验研究
短句来源
更多       
  超声消融
    This study was designed to observe the effects of acoustic power, duration, repetitive ablations, tissue-transducer interface temperature and different sites on the ultrasound ablation in vitro.
    本研究的目的在于观察声功率、消融时间、消融次数、换能器-组织接触表面的温度、不同部位心室肌及不同类型换能器等因素对超声消融效果的影响;
短句来源
    Results In group A, the stenosis degree was decreased after endovascular ultrasound ablation, from the initial 84.1%±4.7% to 40.1%± 15.3% (P<0.05) without any complications. The residual stenosis was less than 30% in 5 cases. The residual stenosis in group A was significantly higher than that in group B (P<0.01).
    结果 A组经单纯血管内超声消融治疗后狭窄程度由 (84 .1± 4 .7) %降为 (4 0 .1± 15 .3) % (P <0 .0 5 ) ,无 1例并发症 ,其中有 5例治疗后残余狭窄 <30 % ,但残余狭窄仍显著高于B组 (P <0 .0 1) ;
短句来源
    For 18 patients with peripheral arterial atherosclerotic plaques, the stenosis degree was decreased after pure ultrasound ablation, from preoperative 87.8%±7.6% to postoperative 41.2%±9.4% (P<0.05).
    18例外周动脉粥样硬化者经单纯血管内低频高能超声消融术后 ,平均狭窄程度也由术前的 (87.8± 7.6 ) %降为 (4 1.2± 9.4 ) % (P <0 .0 5 )。
短句来源
    Result The average time to finish ultrasound ablation of VC and the time exposing to X ray were less than radiofrequency ablation (25 ± 13 min vs 72±18 min,8±3 min vs 6±11 min; P<0.01), and more easy to reach electrical isolation in ultrasound ablation group;
    结果超声消融组的手术操作时间、暴光时间均小于射频组(25±13 min vs72±18 min,P<0.01;8±3 min vs 26±11 min,P<0.01),且容易达到消融终点(电隔离);
短句来源
    Experimental Study of Cardiac Ultrasound Ablation in Canine Heart
    超声消融心肌治疗心律失常的实验研究
短句来源
更多       
  超声消融术
    Conclusion Endovascular ultrasound ablation, using low frequency and high intensity, is an effective means for the treatment of atherosclerotic plaques.
    结论 血管内低频高能超声消融术是动脉粥样硬化斑块的一种新的、有效的治疗手段。
短句来源

 

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  ultrasound ablation
Initial Experience with a Novel Focused Ultrasound Ablation System for Ring Ablation Outside the Pulmonary Vein
      
Transmission electron microscopy of rabbit liver after high-intensity focused ultrasound ablation combined with ultrasound contr
      
Enhancement of ultrasound contrast agent in High-Intensity focused ultrasound ablation
      
Expression of Tumor Antigens and Heat-Shock Protein 70 in Breast Cancer Cells After High-Intensity Focused Ultrasound Ablation
      
Extracorporeal High Intensity Focused Ultrasound Ablation in the Treatment of Patients with Large Hepatocellular Carcinoma
      
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Purpose: To evaluate the efficacy and safety of perutanoous transluminal coronary ultrasound ablation (CUA) in patients with acute mndial infarction (AMI). Methods: 20 Patients (mean age 52. 3 ±11. 2 years) with AMI wer included for clinica study. They were randowhy assigned to CUA with adunctive PTCA group (n = 8) and na alon groIJp (n = 12). Treated lesions were in the left anterior daseending branch (n = 14), drcurnflex branch (n = 1) and right coroary artery (n = 5). Results: In 8 patients after treated...

Purpose: To evaluate the efficacy and safety of perutanoous transluminal coronary ultrasound ablation (CUA) in patients with acute mndial infarction (AMI). Methods: 20 Patients (mean age 52. 3 ±11. 2 years) with AMI wer included for clinica study. They were randowhy assigned to CUA with adunctive PTCA group (n = 8) and na alon groIJp (n = 12). Treated lesions were in the left anterior daseending branch (n = 14), drcurnflex branch (n = 1) and right coroary artery (n = 5). Results: In 8 patients after treated with CUA for 136 ±48 ar, chest twn was ralieved within 8 to 15 ndnutes, whereas chest pain was alleviated within 20 to 25 minutes in 12 patients with PTCA alone. be angiogrphy revealed that the pemtage of the cliameter stenosis(%D)of the infarcted arteries decnd frn 100 % to 56. 09 % ±15. 57 % (P <0. 001) after CUA and to 5. 29 % ±0. 34 % (P<0. 001)after FTCA, and that the Annirnal ltimen diameter increased from 0 mm to 1. 43 ±0. 24 mm (P < 0.001) after CUA and to 3. 08 ±0. 42 mm after PTCA (P<0.001). Angiographic findings shown TIMI grade incrrased from grade 1 to grade 3 after application of CUA. In PTCA alone group, MLD increased from 0 mm to 2. 87 ±0. 49 mm, and %D decnd from 100 % to 10. 27 % ±4. 36 %(P<0. 001) after PTCA. Intravascular ultnd itwng indicated that with CUA ther was little tbos on the surface of the lumen, whereas much more thrombus adhered to the lumen without CUA. No vessel dissection or mechanical injtiry to the coronary arteries treaed with CUA were found. Conclusions: Catheter delivered ultrasound energy can be effecively and safely used for percutaneous transluminal coronary ablation to treat the patients with AMI.

目的:本研究旨在评价经皮冠状动脉(冠脉)内超声消融治疗急性心肌梗死(AMI)的疗效与安全性。方法:研究对象为20例AMI的患者(男18例,女2例,年龄523±11.2岁),随机分为PTCA组12例和经皮冠脉内超声消融血栓(CUA)加PTCA组(CUA+PTCA组)8例。梗塞相关冠脉前降支14例,左回旋支1例,右冠脉5例。结果:CUA+PTCA组8例超声治疗136±48s后胸病在8~15min内缓解,PTCA组12例胸痛在20~25min内缓解。冠脉造影示CUA+PTCA组超声溶栓后即刻最小管腔直径(MLD)由开始时的0mm增大至1.43±0.24mm(P<0.001),%D由开始时的100%降低至56.09%±15.57%(P<0.001),TIMI由开始时的0级增加至3级。加行PTCA术后即刻MLD增大至3.08±0.42mm,狭窄直径百分比(%D)降低至5.29%±0.34%(P<0.001)。单独PTCA组12例术后即刻MLD由术前的0mm增大至2.87±0.49mm,%D由开始时的100%降低至10.27%±4.36%(P<0.001)。腔内超声显像CUA+PTCA组超声溶栓后即刻冠脉内膜面极少量残留...

目的:本研究旨在评价经皮冠状动脉(冠脉)内超声消融治疗急性心肌梗死(AMI)的疗效与安全性。方法:研究对象为20例AMI的患者(男18例,女2例,年龄523±11.2岁),随机分为PTCA组12例和经皮冠脉内超声消融血栓(CUA)加PTCA组(CUA+PTCA组)8例。梗塞相关冠脉前降支14例,左回旋支1例,右冠脉5例。结果:CUA+PTCA组8例超声治疗136±48s后胸病在8~15min内缓解,PTCA组12例胸痛在20~25min内缓解。冠脉造影示CUA+PTCA组超声溶栓后即刻最小管腔直径(MLD)由开始时的0mm增大至1.43±0.24mm(P<0.001),%D由开始时的100%降低至56.09%±15.57%(P<0.001),TIMI由开始时的0级增加至3级。加行PTCA术后即刻MLD增大至3.08±0.42mm,狭窄直径百分比(%D)降低至5.29%±0.34%(P<0.001)。单独PTCA组12例术后即刻MLD由术前的0mm增大至2.87±0.49mm,%D由开始时的100%降低至10.27%±4.36%(P<0.001)。腔内超声显像CUA+PTCA组超声溶栓后即刻冠脉内膜面极少量残留血栓;PTCA组术后即刻冠脉内膜面大量血栓。CUA+PTCA组超声溶栓后均无夹层分离等并发症,随访1~10个月无心绞痛发作;PTCA组有夹层分离等并发症发生,2例于术后3~4个月发作心绞痛,再狭窄率分别为68.12%与88.59%。结论?

Objective To investigate the biologic effects of high freqency ultrasound wave ablating ventricular myocardium in vivo. Methods The ventricular myocardium in 10 anaesthetized canines was ablated by transcatheter ultrasound wave with freqency of 10 4 MHz.The depth and shape of the ablated lesions were observed,and the temperature at the ablation site was measured.The lesions created by ultrasound wave and radiofrequency wave on myocardium in vitro were also studied and compared. Results In vivo ultrasound...

Objective To investigate the biologic effects of high freqency ultrasound wave ablating ventricular myocardium in vivo. Methods The ventricular myocardium in 10 anaesthetized canines was ablated by transcatheter ultrasound wave with freqency of 10 4 MHz.The depth and shape of the ablated lesions were observed,and the temperature at the ablation site was measured.The lesions created by ultrasound wave and radiofrequency wave on myocardium in vitro were also studied and compared. Results In vivo ultrasound ablation of ventricular myocardium could produce lesions of 10 mm in depth with clear cut border.The depth had linear relationship with energy application duration.The heating center caused by ultrasound wave located in the deep layer of myocardium.Contrarily,radiofrequency ablation produced wider,shallower lesions,and the heating center located at the myocardial surface of the ablation site. Conclusions High frequency ultrasound wave ablation can produce lesion deep enough in the myocardium,and the depth is controllable,implying that it can be used to ablate a focus in deep layer of ventricular myocardial.

目的 探讨超声消融活体心肌的效应特征 ,提供导管超声用以治疗心律失常的实验基础。 方法 用 10 .4MHz的超声导管消融 10只活体犬心肌 ,观察消融深度、形态和温度变化及其与射频消融心肌效应的差异。 结果 超声在活体犬可产生深达 10 mm的心肌消融 ,消融深度与消融时间呈良好相关且边界清晰 ;其热中心在心肌内部。而射频消融深度明显低于超声 ,其热中心在消融的心肌表面。 结论 超声可产生边界清晰且深入的心肌消融 ,消融深度可控 ,提示超声作为导管消融较为安全的能量适于消融深部病灶。

To study whether ablation with Through-the-Balloon Ultrasound Ablation (TTB-USA) can electrically isolate left superior pulmonary vein (LSPV) and cause acute or chronic LSPV stenosis after ablation,the LSPV of one dog was electrically isolated with TTB-USA.Through the atrial septum,the TTB-USA was positioned at junction of LSPV and left atrium,and then begin to ablate to electrical isolation.Before,after ablation LSPV angiography was performed,and 2 months later pathological examination...

To study whether ablation with Through-the-Balloon Ultrasound Ablation (TTB-USA) can electrically isolate left superior pulmonary vein (LSPV) and cause acute or chronic LSPV stenosis after ablation,the LSPV of one dog was electrically isolated with TTB-USA.Through the atrial septum,the TTB-USA was positioned at junction of LSPV and left atrium,and then begin to ablate to electrical isolation.Before,after ablation LSPV angiography was performed,and 2 months later pathological examination was made. Result: The total ablation time was 1160 seconds. The effective ablation was indicated by the gradual decrease of amplitude of A wave in pulmonary vein,the extension of SP interval and eventually the electrical isolation.No acute pulmonary vein stenosis was found before or after 15 min ablation.No hemodynamic change appeared after ablation. Tow months later, pathological examination of pulmonary vein showed the wall of LSPV became mild thicker circularly and no any stenosis in LSPV was found. Conclution: The TTB-USA can electrically isolate LSPV of dog and do not cause acute or chronic stenosis after ablation.

试研究球囊超声导管消融能否电隔离肺静脉、是否造成肺静脉的急性或者慢性狭窄。报告 1只犬的左上肺静脉经球囊超声导管消融电隔离结果。经房间隔将球囊超声导管的球囊置于左上肺静脉与左房的交界处 ,消融至电隔离。消融前后行肺静脉造影检查 ,2个月后行病理检查。结果 :消融开始至隔离的时间为 1160s。有效消融表现为肺静脉内的A波振幅逐渐降低 ,SP间期的逐渐延长至出现肺静脉与心房的电隔离。消融前与消融后 15min的造影对比 ,无肺静脉的狭窄及血液动力学变化。 2个月后尸体解剖发现肺静脉壁的轻度环行增厚 ,无左上肺静脉的狭窄。结论 :球囊超声消融可完全电隔离肺静脉 ,不造成肺静脉的急性或慢性狭窄 ,但长期效果仍有待观察。

 
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