Accuracy of MR temperature measurement based on chemical shift change for radiofrequency ablation using hook-shaped electrodes

Shigeo Okuda, Kagayaki Kuroda, Osamu Kainuma, Koichi Oshio, Hirokazu Fujiwara, Sachio Kuribayashi

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The purpose of the current study is to evaluate the accuracy of MR thermometry for radiofrequency ablation (RFA) with hook-shaped electrodes. The objects were eight extracted bovine livers. The chemical shift change was calculated from MR images acquired with a spoiled gradient echo sequence and compared with the temperature directly measured with a thermocouple. Linear regression was established between them with a coefficient of -0.0110±0.0007 ppm/°C and errors were calculated as -0.50±7.50°C. MR thermometry is capable of monitoring temperature for RFA.

Original languageEnglish
Pages (from-to)95-100
Number of pages6
JournalMagnetic Resonance in Medical Sciences
Volume3
Issue number2
DOIs
Publication statusPublished - 2004 Dec 1

Keywords

  • MR thermometry
  • Phase imaging
  • RF ablation

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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