| 摘要: |
| 为测试自制气冷射频针的性能,验证气冷射频技术的可行性及有效性,设计了8种实验工况,实验过程中实时记录距射频针0.5cm、1.0cm、1.5cm处的温度值及消融时间,确定氮气压力、射频功率、冷却方式对消融效果的影响。实验结果表明:气冷射频针能显著延长射频消融时间,提高射频针外围的温度,温度提高幅度、消融时间均与氮气压力正相关;同样工况下,间断冷却比先冷时各点温度稍高,消融时间稍长,但并无显著性差异;30W功率时的各点温度均显著高于对应的45W功率时的温度,常温氮气节流后产生的冷量不足以有效延长45W以上功率时的消融时间。 |
| 关键词: 热工学 气体节流冷却 射频针 温度 消融时间 |
| DOI：10.3969/j.issn.0253-4339.年份（4位数字）.月份（2位数字）.文章的起始页码（3位数字） |
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| 基金项目:2009年上海市联盟计划-难题招标专项基金资助(09LM14)~~ |
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| A Preliminary Performance Test on the Self-made Gas J-T Cooling Radiofrequency Probe |
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| Abstract: |
| Eight types of experimental conditions were designed to test the performance of the self-made gas J-T cooling radiofrequency probe and evaluate its feasibility and efficacy.The temperatures which were 0.5cm,1.0cm,1.5cm away from the wall of RF probe and the ablation time were recorded in real time to evaluate the effects of nitrogen pressure,RF power and cooling mode on the results of RFA.The results indicated that the gas J-T cooling RF probe could significantly prolong the ablation time and create the hig... |
| Key words: Pyrology Gas J-T cooling Radiofrequency probe Temperature Ablation time |
