Moving-shot versus fixed electrode techniques for radiofrequency ablation: comparison in an ex-vivo bovine liver tissue model.
Moving-shot versus fixed electrode techniques for radiofrequency ablation: comparison in an ex-vivo bovine liver tissue model.
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DOI：
10.3348/kjr.2014.15.6.836
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发表时间：
2014-11
影响因子：
4.8
通讯作者：
Lee JH
中科院分区：
文献类型：
--
作者：
Ha EJ;Baek JH;Lee JH
在离体牛肝组织模型中比较移动发射技术（MST）和固定电极技术（FET）用于射频（RF）消融的消融特性。我们使用FET在110个牛肝组织块中进行了射频消融，消融时间从5秒到5分钟不等（每个持续时间10个组织块）。用MST消融10个牛肝块，每个消融时间为1分钟或2分钟，MST通过移动电极头端来治疗概念消融单元。我们评价了在消融时间长度内使用FET获得的消融体积。在相同消融时间长度下进行的FET和MST的结果，即，1-2分钟消融时间进行比较。随着消融时间的增加，使用FET实现的消融体积逐渐增加;然而，30秒后，2个相邻消融时间长度之间的成对统计学比较不显著。消融时间为1分钟或2分钟的MST实现了更大的消融体积（分别为1.1 ± 0.2 mL vs. 2.7 ± 0.3 mL，p < 0.001;和1.4 ± 0.2 mL vs. 5.6 ± 0.4 mL，p < 0.001），更长的真实RF时间（分别为46.7 ± 4.6秒vs. 60秒，p < 0.001; 64.8 ± 4.6秒vs. 120秒，p < 0.001），射频截止次数较少（分别为1.6 ± 0.5 vs. 0，p < 0.001;和5.5 ± 0.5 vs. 0，p < 0.001），能量沉积更大（分别为2050.16 ± 209.2 J与2677.76 ± 83.68 J，p < 0.001;和2970.64 ± 376.56 J与5564.72 ± 5439.2 J，p < 0.001）。与离体牛肝模型中的FET相比，MST可通过防止射频截止实现更大的消融体积。
To compare the ablation characteristics of the moving-shot technique (MST) and the fixed electrode technique (FET) for radiofrequency (RF) ablation in an ex-vivo bovine liver tissue model. We performed RF ablation using FET in 110 bovine liver blocks using 11 different ablation times ranging from 5 seconds to 5 minutes (10 blocks per each time duration). Ten bovine liver blocks at each ablation time of 1- or 2-minute, were ablated with MST, which treated conceptual ablation units by moving the electrode tip. We evaluated the ablation volume obtained with FET across ablation time lengths. The results of FET and MST performed with the same ablation time lengths, i.e., 1- and 2-minute ablation time were also compared. The ablation volume achieved with FET gradually increased with increasing ablation time; however, the pair-wise statistical comparison between 2 neighboring ablation time lengths was not significant after 30 seconds. MST with either 1- or 2-minute ablation time achieved larger ablation volumes (1.1 ± 0.2 mL vs. 2.7 ± 0.3 mL, p < 0.001; and 1.4 ± 0.2 mL vs. 5.6 ± 0.4 mL, p < 0.001, respectively), longer true RF times (46.7 ± 4.6 seconds vs. 60 seconds, p < 0.001; and 64.8 ± 4.6 seconds vs. 120 seconds, p < 0.001, respectively), fewer numbers of RF cut-offs (1.6 ± 0.5 vs. 0, p < 0.001; and 5.5 ± 0.5 vs. 0, p < 0.001, respectively), and greater energy deposition (2050.16 ± 209.2 J vs. 2677.76 ± 83.68 J, p < 0.001; and 2970.64 ± 376.56 J vs. 5564.72 ± 5439.2 J, p < 0.001, respectively), than FET. The MST can achieve a larger ablation volume by preventing RF cut-off, compared with the FET in an ex-vivo bovine liver model.
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影响因子：
5.5
作者：
Rhim, H;Goldbert, SN;Cho, OK
通讯作者：
Cho, OK
影响因子：
4.8
作者：
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Mun WS
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Korean Society of Radiology
影响因子：
2.6
作者：
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通讯作者：
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影响因子：
4.8
作者：
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