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MR‐guided microwave thermocoagulation therapy of liver tumors: Initial clinical experiences using a 0.5 T open MR system
Author(s) -
Morikawa Shigehiro,
Inubushi Toshiro,
Kurumi Yoshimasa,
Naka Shigeyuki,
Sato Koichiro,
Tani Tohru,
Yamamoto Ikuo,
Fujimura Masaki
Publication year - 2002
Publication title -
journal of magnetic resonance imaging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.563
H-Index - 160
eISSN - 1522-2586
pISSN - 1053-1807
DOI - 10.1002/jmri.10198
Subject(s) - microwave ablation , magnetic resonance imaging , medicine , percutaneous , hepatocellular carcinoma , ablation , radiology , cancer research
Purpose To utilize a microwave coagulator for MR‐guided interstitial thermal therapy of liver tumors as a clinically feasible heating device. Materials and Methods MR‐guided microwave thermocoagulation therapy was carried out 34 times in 30 patients with liver tumors (eight hepatocellular carcinoma, 22 metastatic tumors) using a 0.5 T open configuration MR system. Results Percutaneous puncture could be accomplished both accurately and safely while monitoring real‐time magnetic resonance imaging (MRI). Using a notch filter, MR images could be observed without electromagnetic interference even during microwave ablation. Temperature monitoring during ablation was possible using the proton resonance frequency method. All procedures could be successfully carried out without any complications, and the therapeutic effects were deemed satisfactory. Conclusion MR‐guided microwave thermocoagulation therapy could be one promising procedure of minimally invasive treatment for liver tumors. J. Magn. Reson. Imaging 2002;16:576–583. © 2002 Wiley‐Liss, Inc.