Time‐resolved MR fingerprinting for T2* signal extraction: MR fingerprinting meets echo planar time‐resolved imaging.
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| Title: | Time‐resolved MR fingerprinting for T |
|---|---|
| Authors: | Cui, Di1 (AUTHOR) di.cui@ucsf.edu, Liu, Xiaoxi1 (AUTHOR), Larson, Peder E. Z.1,2 (AUTHOR), Xu, Duan1 (AUTHOR) |
| Source: | Magnetic Resonance in Medicine. Apr2025, Vol. 93 Issue 4, p1751-1760. 10p. |
| Subjects: | Image reconstruction, Weight training, Magnetic resonance imaging, In vivo studies, Statistical correlation |
| Abstract: | Purpose: This study leverages the echo planar time‐resolved imaging (EPTI) concept in MR fingerprinting (MRF) framework for a new time‐resolved MRF (TRMRF) approach, and explores its capability for fast simultaneous quantification of multiple MR parameters including T1, T2, T2*, proton density, off resonance, and B1+. Methods: The proposed TRMRF method uses the concept of EPTI to track the signal change along the EPI echo train for T2* weighting with a k‐t Poisson‐based sampling order designed for acquisition. A two‐dimensional decomposition algorithm was designed for the image reconstruction, enabling fast and precise subspace modeling. The accuracy of proposed method was evaluated by a T1/T2 phantom. The feasibility was demonstrated through 5 healthy volunteer brain studies. Results: In the phantom studies, T1, T2, and T2* maps of TRMRF correlated strongly with gold‐standard methods. The concordance correlation coefficients are 0.9999, 0.9984 and 0.9978, and R2s are 0.9998, 0.9971, and 0.9983. In the in vivo studies, quantitative maps were acquired with 5 healthy volunteers. TRMRF was demonstrated to have comparable results with spiral MRF and gradient‐echo EPTI. TRMRF scans using 16, 10, and 6 s per slice were also evaluated to demonstrate the capability of shorter scan times. Conclusion: A new approach is proposed to exploit the advantage of EPTI in the MRF framework. We demonstrate in phantom and in vivo experiments that T1, T2, T2*, proton density, off resonance, and B1+ can be simultaneously quantified within 6 s/slice by TRMRF. [ABSTRACT FROM AUTHOR] |
| Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 183917286 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Time‐resolved MR fingerprinting for T<subscript>2</subscript>* signal extraction: MR fingerprinting meets echo planar time‐resolved imaging. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Cui%2C+Di%22">Cui, Di</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> di.cui@ucsf.edu</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiaoxi%22">Liu, Xiaoxi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Larson%2C+Peder+E%2E+Z%2E%22">Larson, Peder E. Z.</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Duan%22">Xu, Duan</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Magnetic+Resonance+in+Medicine%22">Magnetic Resonance in Medicine</searchLink>. Apr2025, Vol. 93 Issue 4, p1751-1760. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Image+reconstruction%22">Image reconstruction</searchLink><br /><searchLink fieldCode="DE" term="%22Weight+training%22">Weight training</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+resonance+imaging%22">Magnetic resonance imaging</searchLink><br /><searchLink fieldCode="DE" term="%22In+vivo+studies%22">In vivo studies</searchLink><br /><searchLink fieldCode="DE" term="%22Statistical+correlation%22">Statistical correlation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Purpose: This study leverages the echo planar time‐resolved imaging (EPTI) concept in MR fingerprinting (MRF) framework for a new time‐resolved MRF (TRMRF) approach, and explores its capability for fast simultaneous quantification of multiple MR parameters including T1, T2, T2*, proton density, off resonance, and B1+. Methods: The proposed TRMRF method uses the concept of EPTI to track the signal change along the EPI echo train for T2* weighting with a k‐t Poisson‐based sampling order designed for acquisition. A two‐dimensional decomposition algorithm was designed for the image reconstruction, enabling fast and precise subspace modeling. The accuracy of proposed method was evaluated by a T1/T2 phantom. The feasibility was demonstrated through 5 healthy volunteer brain studies. Results: In the phantom studies, T1, T2, and T2* maps of TRMRF correlated strongly with gold‐standard methods. The concordance correlation coefficients are 0.9999, 0.9984 and 0.9978, and R2s are 0.9998, 0.9971, and 0.9983. In the in vivo studies, quantitative maps were acquired with 5 healthy volunteers. TRMRF was demonstrated to have comparable results with spiral MRF and gradient‐echo EPTI. TRMRF scans using 16, 10, and 6 s per slice were also evaluated to demonstrate the capability of shorter scan times. Conclusion: A new approach is proposed to exploit the advantage of EPTI in the MRF framework. We demonstrate in phantom and in vivo experiments that T1, T2, T2*, proton density, off resonance, and B1+ can be simultaneously quantified within 6 s/slice by TRMRF. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Magnetic Resonance in Medicine is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1002/mrm.30381 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 1751 Subjects: – SubjectFull: Image reconstruction Type: general – SubjectFull: Weight training Type: general – SubjectFull: Magnetic resonance imaging Type: general – SubjectFull: In vivo studies Type: general – SubjectFull: Statistical correlation Type: general Titles: – TitleFull: Time‐resolved MR fingerprinting for T2* signal extraction: MR fingerprinting meets echo planar time‐resolved imaging. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Cui, Di – PersonEntity: Name: NameFull: Liu, Xiaoxi – PersonEntity: Name: NameFull: Larson, Peder E. Z. – PersonEntity: Name: NameFull: Xu, Duan IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 07403194 Numbering: – Type: volume Value: 93 – Type: issue Value: 4 Titles: – TitleFull: Magnetic Resonance in Medicine Type: main |
| ResultId | 1 |
