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首页> 外文期刊>European Journal of Radiology >915MHz microwave ablation with implanted internal cooled-shaft antenna: initial experimental study in in vivo porcine livers.
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915MHz microwave ablation with implanted internal cooled-shaft antenna: initial experimental study in in vivo porcine livers.

机译：915MHz微波消融植入的内部冷却轴天线：在体内猪肝中的初步实验研究。

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摘要

PURPOSE: To explore a preferred power output for further clinical application based on the ablated lesions induced by the four power outputs of 915 MHz microwave in experimental study of in vivo porcine livers. MATERIALS AND METHODS: A KY 2000-915 microwave ablation system with an implanted 915 MHz internal cooled-shaft antenna was used in this study. A total of 24 ablations were performed in eight in vivo porcine livers. The energy was applied for 10 min at microwave output powers of 50 W, 60 W, 70 W, and 80 W. Long-axis and short-axis diameters of the coagulation zone were measured on all gross specimens. RESULTS: The shapes of the 915 MHz microwave ablation lesions were elliptical commonly. As the power increased, the long-axis and short-axis diameters of the coagulation zone had a tendency to rise. But the long-axis diameter of the ablated lesion at 50 W was not significantly smaller than that of the ablated lesion at 60 W (P>0.05) and there were no statistical differences in short-axis diameters of the ablated lesion among the three power outputs of 60 W, 70 W and 80 W (P>0.05). After 10 min irradiation of 60 W, the long-axis and short-axis diameters of the coagulation zone were 5.02+/-0.60 cm and 3.65+/-0.46 cm, respectively. CONCLUSIONS: For decreasing the undesired damages of liver tissues along the shaft and the number of antenna in further clinically percutaneous microwave ablation treatment, the power of 60 W may be a preferred setting among the four power outputs used in present study.
机译：目的：在体内猪肝实验研究中，基于915 MHz微波的四个功率输出所诱发的消融灶，探索一种可进一步用于临床的首选功率输出。材料与方法：本研究使用的是KY 2000-915微波消融系统，该系统带有植入的915 MHz内部冷却轴天线。在八个体内猪肝脏中进行了总共24次消融。在50 W，60 W，70 W和80 W的微波输出功率下施加能量10分钟。在所有大体样品上测量了凝固区的长轴和短轴直径。结果：915 MHz微波消融灶的形状通常为椭圆形。随着功率的增加，凝结区的长轴和短轴直径趋于增大。但是50 W时消融灶的长轴直径并没有明显小于60 W时消融灶的长轴直径（P> 0.05），三种功率之间消融灶的短轴直径无统计学差异。输出功率分别为60 W，70 W和80 W（P> 0.05）。在60 W照射10分钟后，凝结区的长轴直径和短轴直径分别为5.02 +/- 0.60 cm和3.65 +/- 0.46 cm。结论：为了减少进一步的临床经皮微波消融治疗中沿轴的肝组织的有害损伤和减少天线的数量，在本研究中使用的四种功率输出中，60 W功率可能是首选设置。

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