Effect of metallic materials on magnetic resonance image uniformity: a quantitative experimental study

Shimamoto, Hiroaki; Felemban, Doaa; Uchimoto, Yuka; Matsuda, Nobuhiko; Takagawa, Naoko; Takeshita, Ami; Iwamoto, Yuri; Okahata, Ryoko; Tsujimoto, Tomomi; Kreiborg, Sven; Mallya, Sanjay M.; Yang, Fan pei Gloria

doi:https://doi.org/10.1007/s11282-024-00778-y

Effect of metallic materials on magnetic resonance image uniformity: a quantitative experimental study

Shimamoto, Hiroaki; Felemban, Doaa; Uchimoto, Yuka et al.

Oral Radiology, 2024, 41(1), 78-87

Number of Access:759（2025-07-20 13:01 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/98398

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Title	Effect of metallic materials on magnetic resonance image uniformity: a quantitative experimental study
Creator	NRID 1000030448112 1000030448112 researchmap permalink read0127765 read0127765 Scopus Author ID 14026102500 14026102500 CreatorName Shimamoto, Hiroaki
	CreatorName Felemban, Doaa
	CreatorName Uchimoto, Yuka
	CreatorName Matsuda, Nobuhiko
	CreatorName Takagawa, Naoko
	CreatorName Takeshita, Ami
	CreatorName Iwamoto, Yuri
	CreatorName Okahata, Ryoko
	NRID 1000000632150 1000000632150 researchmap permalink 6221 6221 Scopus Author ID 36887663900 36887663900 CreatorName Tsujimoto, Tomomi
	CreatorName Kreiborg, Sven
	CreatorName Mallya, Sanjay M.
	ORCID 0000-0001-6133-0706 0000-0001-6133-0706 Scopus Author ID 34972160300 34972160300 CreatorName Yang, Fan pei Gloria
Subject	Image uniformity
	Metallic materials
	MRI
	Quantitative study
Description	The version of record of this article, first published in Oral Radiology, is available online at Publisher’s website: https://doi.org/10.1007/s11282-024-00778-y.
Abstract	Objective: To assess quantitatively the effect of metallic materials on MR image uniformity using a standardized method. Methods: Six types of 1 cm cubic metallic materials (i.e., Au, Ag, Al, Au–Ag–Pd alloy, Ti, and Co–Cr alloy) embedded in a glass phantom filled were examined and compared with no metal condition inserted as a reference. The phantom was scanned five times under each condition using a 1.5-T MR superconducting magnet scanner with an 8-channel phased-array brain coil and head and neck coil. For each examination, the phantom was scanned in three planes: axial, coronal, and sagittal using T1-weighted spin echo (SE) and gradient echo (GRE) sequences in accordance with the American Society for Testing and Materials (ASTM) F2119-07 standard. Image uniformity was assessed using the non-uniformity index (NUI), which was developed by the National Electrical Manufacturers Association (NEMA), as an appropriate standardized measure for investigating magnetic field uniformity. Results: T1-GRE images with Co–Cr typically elicited the lowest uniformity, followed by T1-GRE images with Ti, while all other metallic materials did not affect image uniformity. In particular, T1-GRE images with Co–Cr showed significantly higher NUI values as far as 6.6 cm at maximum equivalent to 11 slices centering around it in comparison with the measurement uncertainty from images without metallic materials. Conclusion: We found that MR image uniformity was influenced by the scanning sequence and coil type when Co–Cr and Ti were present. It is assumed that the image non-uniformity in Co–Cr and Ti is caused by their high magnetic susceptibility.
Publisher	Springer
Source Title	Oral Radiology
Volume (Issue)	41(1)
Page	78-87
Date of Issued	2024-10-15
Language	English
Handle URL	https://hdl.handle.net/11094/98398
PISSN	09116028
eISSN	16139674
Relation.isIdenticalTo	DOI (Publisher Version) https://doi.org/10.1007/s11282-024-00778-y
Access Rights	open access
CopyRight	This article is licensed under a Creative Commons Attribution 4.0 International License.
oaire:version	Version of Record
Category	学術雑誌論文 Journal Article

Resource Type	journal article
Local Type	Journal Article
DCTERMS.bibliographicCitation	Oral Radiology. 2024, 41(1), p. 78-87
DC.title	Effect of metallic materials on magnetic resonance image uniformity: a quantitative experimental study
DC.creator	Shimamoto, Hiroaki
	Felemban, Doaa
	Uchimoto, Yuka
	Matsuda, Nobuhiko
	Takagawa, Naoko
	Takeshita, Ami
	Iwamoto, Yuri
	Okahata, Ryoko
	Tsujimoto, Tomomi
	Kreiborg, Sven
	Mallya, Sanjay M.
	Yang, Fan pei Gloria
DC.publisher	Springer
DC.language' scheme='DCTERMS.RFC1766	English
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2024-10-15
DC.identifier	https://doi.org/10.1007/s11282-024-00778-y
DC.subject	Image uniformity
	Metallic materials
	MRI
	Quantitative study
DC.description	The version of record of this article, first published in Oral Radiology, is available online at Publisher’s website: https://doi.org/10.1007/s11282-024-00778-y.
DCTERMS.abstract	Objective: To assess quantitatively the effect of metallic materials on MR image uniformity using a standardized method. Methods: Six types of 1 cm cubic metallic materials (i.e., Au, Ag, Al, Au–Ag–Pd alloy, Ti, and Co–Cr alloy) embedded in a glass phantom filled were examined and compared with no metal condition inserted as a reference. The phantom was scanned five times under each condition using a 1.5-T MR superconducting magnet scanner with an 8-channel phased-array brain coil and head and neck coil. For each examination, the phantom was scanned in three planes: axial, coronal, and sagittal using T1-weighted spin echo (SE) and gradient echo (GRE) sequences in accordance with the American Society for Testing and Materials (ASTM) F2119-07 standard. Image uniformity was assessed using the non-uniformity index (NUI), which was developed by the National Electrical Manufacturers Association (NEMA), as an appropriate standardized measure for investigating magnetic field uniformity. Results: T1-GRE images with Co–Cr typically elicited the lowest uniformity, followed by T1-GRE images with Ti, while all other metallic materials did not affect image uniformity. In particular, T1-GRE images with Co–Cr showed significantly higher NUI values as far as 6.6 cm at maximum equivalent to 11 slices centering around it in comparison with the measurement uncertainty from images without metallic materials. Conclusion: We found that MR image uniformity was influenced by the scanning sequence and coil type when Co–Cr and Ti were present. It is assumed that the image non-uniformity in Co–Cr and Ti is caused by their high magnetic susceptibility.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	98398
citation_title	Effect of metallic materials on magnetic resonance image uniformity: a quantitative experimental study
citation_author	Shimamoto, Hiroaki
	Felemban, Doaa
	Uchimoto, Yuka
	Matsuda, Nobuhiko
	Takagawa, Naoko
	Takeshita, Ami
	Iwamoto, Yuri
	Okahata, Ryoko
	Tsujimoto, Tomomi
	Kreiborg, Sven
	Mallya, Sanjay M.
	Yang, Fan pei Gloria
citation_publisher	Springer
citation_language	English
citation_date	2024-10-15
citation_journal_title	Oral Radiology
citation_volume	41
citation_issue	1
citation_firstpage	78
citation_lastpage	87
citation_doi	https://doi.org/10.1007/s11282-024-00778-y
citation_public_url	https://hdl.handle.net/11094/98398

Effect of metallic materials on magnetic resonance image uniformity: a quantitative experimental study

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