<em>In vitro</em> study of characteristics of low-power radiofrequency ablation

LUO Jia; XU Ming; HUANG Guangliang; ZHENG Yanling; LIU Ming; XIE Xiaoyan; LI Dongming

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In vitro study of characteristics of low-power radiofrequency ablation

更新时间：2025-12-15

- In vitro study of characteristics of low-power radiofrequency ablation
- Vol. 25, Issue 4, Pages: 336-340(2016)
- 作者机构：
  
  1. 中山大学附属第一医院超声科，中山大学超声诊断与介入超声研究所,广东,广州,510080
  2. 中山大学附属第一医院肝脏外科,广东,广州,510080
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：11 January 2017，
  
  Published：11 January 2017
- 稿件说明：
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罗佳,徐明,黄光亮,等. 低功率射频消融在体外消融中的实验研究[J]. 肿瘤影像学, 2016, 25(4): 336-340
DOI：

罗佳,徐明,黄光亮,等. 低功率射频消融在体外消融中的实验研究[J]. 肿瘤影像学, 2016, 25(4): 336-340 DOI：

摘要

目的：

探讨低功率射频消融治疗在猪瘦肉组织中形成的消融灶特点。

方法：

将30份猪瘦肉组织随机分为10组，每组3份。使用MedSphere射频消融仪，分别采用1~10 W恒定功率，在高频线阵超声探头引导下进行射频消融。观察消融过程中针尖温度变化及消融后大体标本的消融灶形态，并测量消融灶径线，计算消融灶的体积和纵横比。比较不同功率组消融灶体积及形态，并与病理结果对照。

结果：

除1 W组针尖未能形成消融灶外，其余各功率组均形成椭球体消融灶。其中以3 W组消融灶平均体积最大[(1.760.40) cm

]

，消融灶体积与其他各组之间差异均有统计学意义，且消融灶形态最接近球形(平均纵横比为1.21)。病理HE染色可见消融区组织呈凝固性坏死，其大小与大体标本之间差异无统计学意义。

结论：

MedSphere射频消融仪在功率为3 W时所得的消融灶体积最大，形态最接近球形，可用于临床中浅表器官及近危险部位病灶的消融治疗。

Abstract

Objective:

To investigate the characteristics of low-power radiofrequency ablation in in vitro tissues.

Methods:

Thirty pieces of isolated porcine muscle tissues were divided into 10 groups (3 pieces in each group). Radiofrequency ablation was performed using high-frequency linear array ultrasound probe guided with different powers (1

10 W

respectively). The morphology and size of each ablation lesion were observed. The volume and aspect ratio of each ablation lesion were calculated.

Results:

Ellipsoid ablation lesions formed in each group except 1 W group (the tip temperature was too low to form an ablation lesion in 1 W group). The

mean volume of ablation lesion in 3 W group was the largest (1.76 cm

). The ablation lesion shape in 3 W group was also the closest to sphere (average aspect ratio=1.21).

Conclusion:

When the power is 3 W

the ablation lesion is the largest and is closest to sphere.

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In vitro study of characteristics of low-power radiofrequency ablation

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摘要

Abstract

关键词

Keywords

references