Evidence map›Paper›PMID 40808282›Full record

ArticleMagnetic resonance in medicine2026

Absolute quantification of cerebral metabolites using two-dimensional proton MR spectroscopic imaging with quantitative MRI-based water reference.

Dennis C Thomas, Seyma Alcicek, Andrei Manzhurtsev, Elke Hattingen, Katharina J Wenger, Ulrich Pilatus

Abstract readValidation Study
In one paragraph

Article in Magnetic resonance in medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

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5 · Who and what money

Authors and funding

6 authors.

Dennis C ThomasGoethe University Frankfurt, University Hospital, Institute of Neuroradiology, Frankfurt am Main, Germany.ORCID 0000-0001-5572-5795
Seyma AlcicekGoethe University Frankfurt, University Hospital, Institute of Neuroradiology, Frankfurt am Main, Germany.ORCID 0000-0002-9447-4906
Andrei ManzhurtsevGoethe University Frankfurt, University Hospital, Institute of Neuroradiology, Frankfurt am Main, Germany.
Elke HattingenGoethe University Frankfurt, University Hospital, Institute of Neuroradiology, Frankfurt am Main, Germany.
Katharina J WengerGoethe University Frankfurt, University Hospital, Institute of Neuroradiology, Frankfurt am Main, Germany.ORCID 0000-0002-8640-6858
Ulrich PilatusGoethe University Frankfurt, University Hospital, Institute of Neuroradiology, Frankfurt am Main, Germany.

Funding

Else Kröner-Fresenius-Stiftung (EKFS)Mildred Scheel-Nachwuchszentrum
6 · The paper itself

Abstract

purposeMetabolite concentrations are valuable biomarkers in brain tumors (BTs). However, absolute quantification of metabolites using MR spectroscopy requires a correction of water relaxation using time-consuming quantitative MRI (qMRI) sequences in addition to a lengthy two-dimensional spectroscopic water-reference acquisition. The goal of this work was to develop and validate a fast quantification method where a two-dimensional spectroscopic water reference is obtained using qMRI and a single-voxel stimulated-echo acquisition mode (STEAM) sequence.

methodsThe semi-adiabatic localization by adiabatic selective refocusing (sLASER) sequence was used for MR spectroscopy imaging (MRSI) acquisition. A single-voxel unsuppressed water signal was acquired using a STEAM sequence. A qMRI protocol was also acquired, and the H

resultsIn healthy subjects, white-matter metabolite concentrations obtained using water relaxation using literature values (reference method) significantly differed from those using individual-specific corrections (reference method with qMRI and proposed method). Bland-Altman analyses revealed a very low bias and standard deviation of the differences between the reference method with qMRI and the proposed method (bias < 0.5% and standard deviation < 10%). The BT regions showed an approximate 35% underestimation of metabolite concentrations using the reference method.

conclusionFor metabolite quantification, accurate water referencing with individual-specific corrections for water relaxation times was obtained in 8 min using the proposed method.

Indexed as

CerebrumProton Magnetic Resonance SpectroscopyBrain NeoplasmsHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingReference ValuesWaterWaterbrain tumorsquantitative MRIspectroscopy

Identifiers

PMID40808282
PMCPMC12620158

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