Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning

Abstract A primary safety concern in a magnetic resonance imaging environment is heating of metallic implants by absorbing radiofrequency (RF) energy during MRI scanning. Experimental measurement in conjunction with computational modeling was used to evaluate the risk of biological tissue injury fro...

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Autores principales:	Youngseob Seo, Zhiyue J. Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cc2c72403abe48cf91c0d14f5cdcd2f1
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spelling	oai:doaj.org-article:cc2c72403abe48cf91c0d14f5cdcd2f12021-12-02T14:12:09ZMeasurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning10.1038/s41598-020-80828-72045-2322https://doaj.org/article/cc2c72403abe48cf91c0d14f5cdcd2f12021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80828-7https://doaj.org/toc/2045-2322Abstract A primary safety concern in a magnetic resonance imaging environment is heating of metallic implants by absorbing radiofrequency (RF) energy during MRI scanning. Experimental measurement in conjunction with computational modeling was used to evaluate the risk of biological tissue injury from the RF heating of artificial hip joints by obtaining both specific absorption rate (SAR) and temperature elevation at 1.5 T and 3 T MRI systems. Simulation result showed that high SAR and high temperature appeared near both head and tail sections of the artificial hip joints. For five different 1.5 T and 3 T MRI systems, measured temperature location showed that high temperature rises occurred near both head and tail regions of the metallic hip joints. Measured SAR value of 24.6 W/kg and the high temperature rise (= 4.22 °C) occurred in the tail region of the hip joint at 1.5 T, which was higher than the limits for temperature required by the international electrotechnical commission 60601-2-33. We have demonstrated the feasibility of evaluating RF heating of metallic hip joints during MRI scans.Youngseob SeoZhiyue J. WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Youngseob Seo Zhiyue J. Wang Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning
description	Abstract A primary safety concern in a magnetic resonance imaging environment is heating of metallic implants by absorbing radiofrequency (RF) energy during MRI scanning. Experimental measurement in conjunction with computational modeling was used to evaluate the risk of biological tissue injury from the RF heating of artificial hip joints by obtaining both specific absorption rate (SAR) and temperature elevation at 1.5 T and 3 T MRI systems. Simulation result showed that high SAR and high temperature appeared near both head and tail sections of the artificial hip joints. For five different 1.5 T and 3 T MRI systems, measured temperature location showed that high temperature rises occurred near both head and tail regions of the metallic hip joints. Measured SAR value of 24.6 W/kg and the high temperature rise (= 4.22 °C) occurred in the tail region of the hip joint at 1.5 T, which was higher than the limits for temperature required by the international electrotechnical commission 60601-2-33. We have demonstrated the feasibility of evaluating RF heating of metallic hip joints during MRI scans.
format	article
author	Youngseob Seo Zhiyue J. Wang
author_facet	Youngseob Seo Zhiyue J. Wang
author_sort	Youngseob Seo
title	Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning
title_short	Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning
title_full	Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning
title_fullStr	Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning
title_full_unstemmed	Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning
title_sort	measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during mri scanning
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/cc2c72403abe48cf91c0d14f5cdcd2f1
work_keys_str_mv	AT youngseobseo measurementandevaluationofspecificabsorptionrateandtemperatureelevationcausedbyanartificialhipjointduringmriscanning AT zhiyuejwang measurementandevaluationofspecificabsorptionrateandtemperatureelevationcausedbyanartificialhipjointduringmriscanning
_version_	1718391811545759744

Measurement and evaluation of specific absorption rate and temperature elevation caused by an artificial hip joint during MRI scanning

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