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- Publisher Website: 10.1002/mrm.28433
- Scopus: eid_2-s2.0-85088792446
- PMID: 32738080
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Article: Relayed nuclear Overhauser enhancement imaging with magnetization transfer contrast suppression at 3 T
Title | Relayed nuclear Overhauser enhancement imaging with magnetization transfer contrast suppression at 3 T |
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Authors | |
Keywords | chemical exchange saturation transfer continuous wave-CEST/MT magnetization transfer contrast pulsed-CEST/MT relayed nuclear Overhauser enhancement |
Issue Date | 2021 |
Citation | Magnetic Resonance in Medicine, 2021, v. 85, n. 1, p. 254-267 How to Cite? |
Abstract | Purpose: To develop a pulsed CEST magnetization-transfer method for rapidly acquiring relayed nuclear Overhauser enhancement (rNOE)–weighted images with magnetic transfer contrast (MTC) suppression at clinical field strength (3 T). Methods: Using a pulsed CEST magnetization-transfer method with low saturation powers (B1) and long mixing time (tmix) to suppress contributions due to strong MTC from solid-like macromolecules, a low B1 also minimized direct water saturation. These MTC contributions were further reduced by subtracting the Z-spectral signals at two or three offsets by assuming that the residual MTC is a linear function between −3.5 ppm and −12.5 ppm. Results: Phantom studies of a lactic acid (Lac) solution mixed with cross-linked bovine serum albumin show that strong MTC interference has a significant impact on the optimum B1 for detecting rNOEs, due to lactate binding. The MTC could be effectively suppressed using a pulse train with a B1 of 0.8 μT, a pulse duration (tp) of 40 ms, a tmix of 60 ms, and a pulse number (N) of 30, while rNOE signal was well maintained. As a proof of concept, we applied the method in mouse brain with injected hydrogel and a cell-hydrogel phantom. Results showed that rNOE-weighted images could provide good contrast between brain/cell and hydrogel. Conclusion: The developed pulsed CEST magnetization-transfer method can achieve MTC suppression while preserving most of the rNOE signal at 3 T, which indicates the potential for translation of this technique to clinical applications related to mobile proteins/lipids change. |
Persistent Identifier | http://hdl.handle.net/10722/327988 |
ISSN | 2021 Impact Factor: 3.737 2020 SCImago Journal Rankings: 1.696 |
DC Field | Value | Language |
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dc.contributor.author | Huang, Jianpan | - |
dc.contributor.author | Han, Xiongqi | - |
dc.contributor.author | Chen, Lin | - |
dc.contributor.author | Xu, Xiang | - |
dc.contributor.author | Xu, Jiadi | - |
dc.contributor.author | Chan, Kannie W.Y. | - |
dc.date.accessioned | 2023-06-05T06:53:09Z | - |
dc.date.available | 2023-06-05T06:53:09Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Magnetic Resonance in Medicine, 2021, v. 85, n. 1, p. 254-267 | - |
dc.identifier.issn | 0740-3194 | - |
dc.identifier.uri | http://hdl.handle.net/10722/327988 | - |
dc.description.abstract | Purpose: To develop a pulsed CEST magnetization-transfer method for rapidly acquiring relayed nuclear Overhauser enhancement (rNOE)–weighted images with magnetic transfer contrast (MTC) suppression at clinical field strength (3 T). Methods: Using a pulsed CEST magnetization-transfer method with low saturation powers (B1) and long mixing time (tmix) to suppress contributions due to strong MTC from solid-like macromolecules, a low B1 also minimized direct water saturation. These MTC contributions were further reduced by subtracting the Z-spectral signals at two or three offsets by assuming that the residual MTC is a linear function between −3.5 ppm and −12.5 ppm. Results: Phantom studies of a lactic acid (Lac) solution mixed with cross-linked bovine serum albumin show that strong MTC interference has a significant impact on the optimum B1 for detecting rNOEs, due to lactate binding. The MTC could be effectively suppressed using a pulse train with a B1 of 0.8 μT, a pulse duration (tp) of 40 ms, a tmix of 60 ms, and a pulse number (N) of 30, while rNOE signal was well maintained. As a proof of concept, we applied the method in mouse brain with injected hydrogel and a cell-hydrogel phantom. Results showed that rNOE-weighted images could provide good contrast between brain/cell and hydrogel. Conclusion: The developed pulsed CEST magnetization-transfer method can achieve MTC suppression while preserving most of the rNOE signal at 3 T, which indicates the potential for translation of this technique to clinical applications related to mobile proteins/lipids change. | - |
dc.language | eng | - |
dc.relation.ispartof | Magnetic Resonance in Medicine | - |
dc.subject | chemical exchange saturation transfer | - |
dc.subject | continuous wave-CEST/MT | - |
dc.subject | magnetization transfer contrast | - |
dc.subject | pulsed-CEST/MT | - |
dc.subject | relayed nuclear Overhauser enhancement | - |
dc.title | Relayed nuclear Overhauser enhancement imaging with magnetization transfer contrast suppression at 3 T | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1002/mrm.28433 | - |
dc.identifier.pmid | 32738080 | - |
dc.identifier.scopus | eid_2-s2.0-85088792446 | - |
dc.identifier.volume | 85 | - |
dc.identifier.issue | 1 | - |
dc.identifier.spage | 254 | - |
dc.identifier.epage | 267 | - |
dc.identifier.eissn | 1522-2594 | - |