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Microwave ablation of liver tumors: degree of tissue contraction as compared to RF ablation

Title
Microwave ablation of liver tumors: degree of tissue contraction as compared to RF ablation
Authors
Lee, Jeong KyongSiripongsakun, SurachateBahrami, SiminRaman, Steven S.Sayre, JamesLu, David S.
Ewha Authors
이정경
SCOPUS Author ID
이정경scopus
Issue Date
2016
Journal Title
ABDOMINAL RADIOLOGY
ISSN
2366-004XJCR Link2366-0058JCR Link
Citation
vol. 41, no. 4, pp. 659 - 666
Keywords
Microwave ablationRadiofrequency ablationLiver contractionLiver tumor
Publisher
SPRINGER
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Purpose: To compare the amount of tissue contraction after microwave (MW) versus radiofrequency (RF) ablation of liver tumors. Materials and methods: Seventy-five hepatic tumors in 65 patients who underwent percutaneous MW or RF ablations were included in this retrospective study. All patients underwent MRI within 6 months before the ablation and 24 h after the procedure. Two blinded radiologists, by consensus, performed measurements on the corresponding series of pre and post-ablation MRI. Absolute and relative contraction of liver, tumor, and control were calculated and compared. Results: Thirty-one patients underwent MW ablations, and 44 patients underwent RF ablations. The absolute and relative contraction of the ablation zone were significantly greater with MW than RF ablation (p = 0.003 to <0.001). Thirty-two lesions were visible on both pre- and post-ablation MRI. MW ablation had significantly more tumor contraction as compared to RF ablation (p = 0.003 to 0.009). The control measurements demonstrated no significant difference in normal tissue variation between MW and RF groups. Conclusions: MW ablation of hepatic tumors produced significantly more contraction of tumor and ablated hepatic tissue compared to RF ablation. Tissue contraction should be taken into account during pre-procedural planning and assessing treatment response by comparing pre- and post-ablation images.
DOI
10.1007/s00261-016-0725-8
Appears in Collections:
의과대학 > 의학과 > Journal papers
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