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

doi:10.2463/mrms.3.95

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

Department of Radiology (Diagnostic Radiology)

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	95-100
Number of pages	6
Journal	Magnetic Resonance in Medical Sciences
Volume	3
Issue number	2
DOIs	https://doi.org/10.2463/mrms.3.95
Publication status	Published - 2004 Dec 1

Keywords

MR thermometry
Phase imaging
RF ablation

ASJC Scopus subject areas

Radiology Nuclear Medicine and imaging

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Okuda, S., Kuroda, K., Kainuma, O., Oshio, K., Fujiwara, H., & Kuribayashi, S. (2004). Accuracy of MR temperature measurement based on chemical shift change for radiofrequency ablation using hook-shaped electrodes. Magnetic Resonance in Medical Sciences, 3(2), 95-100. https://doi.org/10.2463/mrms.3.95

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