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

Fingerprint

Thermometry
Electrodes
Temperature
Linear Models
Liver

Keywords

  • MR thermometry
  • Phase imaging
  • RF ablation

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Accuracy of MR temperature measurement based on chemical shift change for radiofrequency ablation using hook-shaped electrodes. / Okuda, Shigeo; Kuroda, Kagayaki; Kainuma, Osamu; Oshio, Koichi; Fujiwara, Hirokazu; Kuribayashi, Sachio.

In: Magnetic Resonance in Medical Sciences, Vol. 3, No. 2, 2004, p. 95-100.

Research output: Contribution to journalArticle

@article{091ecf5bdb1549828271ad105c090d28,
title = "Accuracy of MR temperature measurement based on chemical shift change for radiofrequency ablation using hook-shaped electrodes",
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.",
keywords = "MR thermometry, Phase imaging, RF ablation",
author = "Shigeo Okuda and Kagayaki Kuroda and Osamu Kainuma and Koichi Oshio and Hirokazu Fujiwara and Sachio Kuribayashi",
year = "2004",
doi = "10.2463/mrms.3.95",
language = "English",
volume = "3",
pages = "95--100",
journal = "Magnetic Resonance in Medical Sciences",
issn = "1347-3182",
publisher = "Japan Society of Magnetic Resonance in Medicine",
number = "2",

}

TY - JOUR

T1 - Accuracy of MR temperature measurement based on chemical shift change for radiofrequency ablation using hook-shaped electrodes

AU - Okuda, Shigeo

AU - Kuroda, Kagayaki

AU - Kainuma, Osamu

AU - Oshio, Koichi

AU - Fujiwara, Hirokazu

AU - Kuribayashi, Sachio

PY - 2004

Y1 - 2004

N2 - 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.

AB - 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.

KW - MR thermometry

KW - Phase imaging

KW - RF ablation

UR - http://www.scopus.com/inward/record.url?scp=24344489894&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=24344489894&partnerID=8YFLogxK

U2 - 10.2463/mrms.3.95

DO - 10.2463/mrms.3.95

M3 - Article

C2 - 16093625

AN - SCOPUS:24344489894

VL - 3

SP - 95

EP - 100

JO - Magnetic Resonance in Medical Sciences

JF - Magnetic Resonance in Medical Sciences

SN - 1347-3182

IS - 2

ER -