نتایج جستجو برای: tumor ablation
تعداد نتایج: 473183 فیلتر نتایج به سال:
UNLABELLED Macroautophagy (autophagy hereafter) recycles intracellular components to sustain mitochondrial metabolism that promotes the growth, stress tolerance, and malignancy of lung cancers, suggesting that autophagy inhibition may have antitumor activity. To assess the functional significance of autophagy in both normal and tumor tissue, we conditionally deleted the essential autophagy gene...
BACKGROUND Radio frequency ablation (RFA) has been accepted clinically as a useful local treatment for hepatocellular carcinoma (HCC). However, intrahepatic recurrence after RFA has been reported which might be attributable to increase in intra-tumor pressure during RFA. To reduce the pressure and ablation time, we developed a novel method of RFA, a multi-step method in which a LeVeen needle, a...
Background and purpose: Catheter radiofrequency ablation is the first step in therapeutic approach to Atrioventricular nodal reentrant tachycardia (AVNRT). Different protocols for slow pathway ablation are found to have various ranges of efficacy and side effects. This study compared the effects of partial and complete ablation of the slow pathway on recurrence, symptom relief and complications...
AV-node modification by catheter RF energy delivery is treatment of choice in the symptomatic patients with AVNRT. This study included 30 patients with AVNRT (19 women, 11 men). We did slow pathway ablation in 29 cases successfully. Maximum effective energy delivery was 40 watts for 40 msec. 1:1 AV conduction increased from 290±40 msec before ablation to 340±65 msec after ablation. Also AV-node...
To assess the clinical efficiency of ultrasound-guided percutaneous microwave ablation (US-PMWA) assisted by three-dimensional (3D) visualization operative treatment planning system and percutaneous transhepatic cholangial drainage with intraductal chilled saline perfusion (PTCD-ICSP) for larger hepatic hilum hepatocellular carcinoma (HH-HCC) (D ≥ 3 cm). The combination therapy was performed in...
Treatment option for liver cancer patients with large tumor >5 cm and/or portal vein tumor thrombosis is very limited. New treatment strategy is badly needed. Our study is to determine the safety and treatment efficacy of a new minimally invasive treatment strategy-liver segment thermal ablation.Late-stage hepatocellular carcinoma patients were included and treated with percutaneous ablation to...
In the field of biomedical, HIFU is a non-invasive therapeutic method that employs non-ionizing acoustic waves to increase temperature. According its high efficiency and cheap cost, it has been main focus this research. The key stages tumor ablation include mechanical thermal effects. Simulations on tissue with were implemented in research investigate how multiple works enhance while avoiding i...
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