Improvement of MR temperature monitoring for microwave thermocoagulation therapy of liver tumors

• Morikawa Shigehiro

  Molecular Neuroscience Research Center, Shiga University of Medical Science

• Inubushi Toshiro

  Molecular Neuroscience Research Center, Shiga University of Medical Science

• Kurumi Yoshimasa

  Department of Surgery, Shiga University of Medical Science

• Naka Shigeyuki

  Department of Surgery, Shiga University of Medical Science

• Sato Koichiro

  Department of Surgery, Shiga University of Medical Science

• Demura Koichi

  Department of Surgery, Shiga University of Medical Science

• Tani Tohru

  Department of Surgery, Shiga University of Medical Science

• Wakikaido Koichi

  Azwell, Inc.

• Haque Hasnine A.

  GE-Yokogawa Medical Systems

Bibliographic Information

Other Title

• 肝腫瘍マイクロ波凝固治療におけるMR温度モニタリングの改良

Abstract

Respiratory movement disturbed MR temperature monitoring during microwave thermocoagulation of liver tumors, because MR temperature map was highly susceptible to motion. To obtain reliable MR temperature maps, it was required to suspend artificial ventilation during general anesthesia. Microwave ablations ware usually repeated many times in one procedure. Therefore, it was difficult to apply MR temperature monitoring to all of the ablations. We have developed new respiratory triggering technique for temperature monitoring utilizing the information of air way pressure, which was monitored for the control of general anesthesia. Since the ventilation was completely periodical and reproducible, respiratory triggering successfully obtained artifact-free temperature maps without suspending ventilation. This technique made it easy to apply MR temperature monitoring to the repeated microwave ablations and increased the safety of this procedure.

Journal

• Journal of Microwave Surgery

  Journal of Microwave Surgery 21 43-47, 2003

  Study Group of Microwave Surgery

Keywords

• microwave ablation
• liver tumors
• MR image guidance
• MR temperature map
• respiratory triggering

Details

• CRID: 1390282680155869568
• NII Article ID: 130000066714
• DOI: 10.3380/jmicrowavesurg.21.43
• ISSN: 1882210X
• ISSN: 09177728
• Web Site: https://search.jamas.or.jp/link/ui/2005079937
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed