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Dual Switching Monopolar Radiofrequency Ablation Using a Separable Clustered Electrode: Comparison with Consecutive and Switching Monopolar Modes in Ex Vivo Bovine Livers

Yoon JH, Lee JM, Han JK, Choi BI

OBJECTIVE: To compare the in-vitro efficiency of dual-switching monopolar (DSM) radiofrequency ablation (RFA) using a separable clustered electrode (Octopus(R) electrodes) with consecutive monopolar (CM) and switching monopolar (SM) RFA techniques...
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Does Artificial Ascites Induce the Heat-Sink Phenomenon during Percutaneous Radiofrequency Ablation of the Hepatic Subcapsular Area?: an in vivo Experimental Study Using a Rabbit Model

Kim YS, Rhim H, Choi D, Lim HK

OBJECTIVE: To evaluate the effect of the heat-sink phenomenon induced by artificial ascites on the size of the ablation zone during percutaneous radiofrequency (RF) ablation of the hepatic subcapsular area...
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Radiofrequency Ablation with Epinephrine Injection: In Vivo Study in Normal Pig Livers

Kim HJ, Lee DH, Lim JW, Ko YT, Kim YW, Choi BK

PURPOSE: We wanted to evaluate whether epinephrine injection prior to radiofrequency (RF) ablation can increase the extent of thermally mediated coagulation in vivo normal pig liver tissue. MATERIALS AND METHODS: Eighteen...
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FDG-PET for Evaluating the Antitumor Effect of Intraarterial 3-Bromopyruvate Administration in a Rabbit VX2 Liver Tumor Model

Park HS, Chung JW, Jae HJ, Kim YI, Son KR, Lee MJ, Park JH, Kang WJ, Yoon JH, Chung H, Lee K

OBJECTIVE: We wanted to investigate the feasibility of using FDG-PET for evaluating the antitumor effect of intraarterial administration of a hexokinase II inhibitor, 3-bromopyruvate (3-BrPA), in a rabbit VX2 liver...
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Ferucarbotran-Enhanced MR Imaging of the Radiofrequency Ablation Zones in the Normal Rabbit Liver: Comparison with the Conventional MR Imaging

Hong SH, Kim SK, Chae SW, Kwag HJ, Lee MH, Lee YR, Kim BM, Hong HP, Han H, Lee JY

PURPOSE: We wanted to evaluate the findings of ferucarbotran-enhanced MR imaging of the radiofrequency (RF) ablation zones in normal rabbit livers and we compared the findings with the conventional MR...
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Hepatic Radiofrequency Ablation Using Multiple Probes: Ex Vivo and In Vivo Comparative Studies of Monopolar versus Multipolar Modes

Lee JM, Han JK, Lee JY, Kim SH, Choi JY, Lee MW, Choi SH, Eo H, Choi BI

OBJECTIVE: We wanted to compare the efficiency of multipolar radiofrequency ablation (RFA) using three perfused-cooled electrodes with multiple overlapping- and simultaneous monopolar techniques for creating an ablation zone in ex...
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Radiofrequency Ablation of Liver Cancer: Early Evaluation of Therapeutic Response with Contrast-Enhanced Ultrasonography

Choi D, Lim HK, Lee WJ, Kim SH, Kim MJ, Kim SK, Jang KM, Lee JY, Lim JH

The early assessment of the therapeutic response after percutaneous radiofrequency (RF) ablation is important, in order to correctly decide whether further treatment is necessary. The residual unablated tumor is usually...
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Saline-Enhanced Hepatic Radiofrequency Ablation Using a Perfused-Cooled Electrode: Comparison of Dual Probe Bipolar Mode with Monopolar and Single Probe Bipolar Modes

Lee JM, Han JK, Kim SH, Lee JY, Kim DJ, Lee MW, Cho GG, Han CJ, Choi BI

OBJECTIVE: To determine whether saline-enhanced dual probe bipolar radiofrequency ablation (RFA) using perfused-cooled electrodes shows better in-vitro efficiency than monopolar or single probe bipolar RFA in creating larger coagulation necrosis....
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Radiofrequency Ablation of Rabbit Liver In Vivo: Effect of the Pringle Maneuver on Pathologic Changes in Liver Surrounding the Ablation Zone

Kim SK, Lim HK, Ryu JA, Choi DG, Lee WJ, Lee JY, Lee JH, Sung YM, Cho EY, Hong SM, Kim JS

OBJECTIVE: We wished to evaluate the effect of the Pringle maneuver (occlusion of both the hepatic artery and portal vein) on the pathologic changes in the hepatic vessels, bile ducts...
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A Comparative Experimental Study of the, In-vitro Efficiency of Hypertonic, Saline-Enhanced Hepatic Bipolar and, Monopolar Radiofrequency Ablation

Lee JM, Han JK, Kim SH, Sohn KL, Lee KH, Ah SK, Choi BI

OBJECTIVE: To compare the in-vitro efficiency of a hypertonic saline (HS) -enhanced bipolar radiofrequency (RF) system with monopolar RF applications by assessing the temperature profile and dimensions of RF-created coagulation...
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Overlapping Ablation Using a Coaxial Radiofrequency Electrode and Multiple Cannulae System: Experimental Study in ex-Vivo Bovine Liver

Choi D, Kim SK, Lim HK, Kim MJ, Lee J, Kim EY, Kim S, Kim SH

OBJECTIVE: To assess the sizes and configurations of thermal zones after overlapping ablations using a coaxial radiofrequency (RF) electrode and multiple cannulae in ex-vivo bovine liver. MATERIALS AND METHODS: For...
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Percutaneous Radiofrequency Thermal Ablation with Hypertonic Saline Injection: In Vivo Study in a Rabbit Liver Model

Lee JM, Kim YK, Lee YH, Kim SW, Li CA, Kim CS

OBJECTIVE: To determine whether hypertonic saline (HS, 36% NaCl) injection prior to or during radiofrequency ablation (RFA) can increase the extent of thermally mediated coagulation in in-vivo rabbit liver tissue,...
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An Experimental Study of Simultaneous Ablation with Dual Probes in Radiofrequency Thermal Ablation

Jang IS, Rhim H, Koh BH, Cho OK, Seo HS, Kim Y, Kim Y, Heo JN

PURPOSE: To determine the differences between sequential ablation with a single probe and simultaneous ablation with dual probes. MATERIALS AND METHODS : Using two 14-gauge expandable probes (nine internal prongs with...
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Gene Delivery to the Rat Liver Using Cationic Lipid Emulsion/DNA Complex: Comparison between Intra-arterial, Intraportal and Intravenous Administration

Choi BY, Chung JW, Park JH, Kim KH, Kim YI, Koh YH, Kwon JW, Lee KH, Choi HJ, Kim TW, Kim YJ, Chung H, Kwon IC, Jeong SY

OBJECTIVE: To compare the efficiency of intra-arterial, intraportal, and intravenous administration of cationic lipid emulsion/DNA complex, as used for gene transfer to rat liver. MATERIALS AND METHODS: DNA-carrier complex for the...
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Shrinkage Rate of Necrotic Lesion after Radiofrequency (RF) Ablation of Hepatocellular Carcinoma: Correlation with Marginal Recurrence and Influencing Factors

Oh JY, Nam KJ, Choi JC, Yoon SK, Park BH, Lee KN, Choi SS, Han SY, Shin WW

PURPOSE: To compare the CT findings of hepatocellular carcinomas (HCCs) immediately after radiofrequency (RF) ablation with those obtained at six months' follow-up, to analyse the relationship between degree of shrinkage...
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Hepatocellular Carcinoma after Radiofrequency Ablation: Recurrent Pattern and Influenting Factor

Kang MJ, Nam KJ, Oh JY, Choi JC, Park BH, Lee YI

PURPOSE: To evaluate patterns of recurrence and factors which influence them in radiofreqency (RF) ablation for the treatment of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Between May 1999 and March 2000,...
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The Effect of Ethanol Infusion on the Size of the Ablated Lesion in Radiofrequency Thermal Ablation: A Pilot Study

Kim YS, Rhim H, Koh BH, Cho OK, Seo HS, Kim Y, Joo KB

  • KMID: 1614842
  • J Korean Soc Med Ultrasound.
  • 2001 Sep;20(3):175-180.
PURPOSE: To assess the effect of ethanol infusion on the size of ablated lesion during radiofrequency (RF) thermal ablation. MATERIALS AND METHODS: We performed an ex vivo experimental study using a...
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MR Imaging-Histopathologic Correlation of Radiofrequency Thermal Ablation Lesion in a Rabbit Liver Model: Observation during Acute and Chronic Stages

Lee JD, Lee JM, Kim SW, Kim CS, Mun WS

OBJECTIVE: To determine the ability of MR imaging to detect the pathological changes occurring in radiofrequency (RF) thermal lesions and to assess its accuracy in revealing the extent of tissue...
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Hepatic Parenchymal Changes After Percutaneous Injection of Holmium-166 in Rabbit

Choi BI, Kim MJ, Park YN, Kim JH, Choi BW, Lee JD, Yoo HS, Lee JT

  • KMID: 2099805
  • J Korean Soc Magn Reson Med.
  • 2001 Jun;5(1):43-48.
PURPOSE: To evaluate changes in rabbit liver parenchyma on MR images following percutaneous Holmium-166 injection, and to correlate those changes with histologic findings. MATERIALS AND METHODS: Holmium-166 (10-25 mCi) was...
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Efficacy of Percutaneous Microwave Coagulation Therapy for Nodular Hepatic Tumor: A Preliminary Study

Kim SH, Bang SW, Baek SI, Kim JS, Kim HK

PURPOSE: Percutaneous microwave coagulation therapy (PMCT) uses a new energy source, microwave, in the treatment of solid neoplasms. We evaluated the efficacy of PMCT for nodular hepatic tumors in nine...
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