10.5 T CRT-MRSI metabolic, spectral and quality maps

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https://doi.org/10.13020/pp73-qj83
https://hdl.handle.net/11299/265755

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Keywords

magnetic resonance spectroscopy

10.5 T

metabolic maps

Collection period

2023-12-01
2024-04-03

Date completed

2024-04-03

Date updated

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Title

10.5 T CRT-MRSI metabolic, spectral and quality maps

Published Date

2024-10-01

Authors

Marjanska, Malgorzata

Bogner, Wolfgang

Hingerl, Lukas

Strasser, Bernhard

Group

University of Minnesota, Center for Magnetic Resonance Research

Author Contact

Marjanska, Malgorzata
gosia@umn.edu

Type

Dataset
Human Subjects Data
Experimental Data

Abstract

Magnetic resonance spectroscopy data measured from a brain of a healthy volunteer at 10. 5 tesla. These data show the metabolic maps, CRLB maps and LCModel fits, input data and fitted baseline in nifti-format. The volunteer was measured three different resolutions (4.40 mm³ isotropic, 3.44 mm³ isotropic, and 2.75 mm³ isotropic) using a concentric ring trajectory (CRT) FID-based sequence, reconstructed using a discrete Fourier transform, and fitted with LCModel (for more details, see below). The metabolic maps are in auxilliary units (a.u.) and are not in physical units. All these files can be viewed with freeview of freesurfer 7.1.1. It is being released to allow researchers to fully appreciate these 3D datasets, which are hard to otherwise visualize.

Description

The uploaded metabolic maps contain the following metabolites (or sums thereof): aspartate, creatine + phosphocreatine, glucose, glutamate, glycerophosphocholine, glutathione, macromolecules, N-acetylaspartylglutamic acid, phosphocholine, scyllo-inositol, areatine, gamma aminobutyric acid, glutamine, glutamate + glutamine, glycerophosphocholine + phosphocholine, myo-inositol, N-acetylaspartate, N-acetylaspartate + N-acetylaspartylglutamic acid, phosphocreatine, and taurine. The spectral maps contain the LCModel input spectra, fits and baseline fits as a time course (the x-axis is in fact chemical shift in ppm). Additional info is provided by the maps "0_pha_map.nii.gz", "1_pha_map.nii.gz", "SNR_map.nii.gz", "FWHM_map.nii.gz", "shift_map.nii.gz", "SNR_PseudoReplica_spectral_map.nii", "SNR_PseudoReplica_time_map.nii.gz", "FWHM_NAA_map.nii.gz", which are the zero- and first-order phase, SNR, FWHM, and spectral shifts as fitted by LCModel. The last three of these maps are the SNR in spectral and time domain, and the FWHM of NAA calculated by our own scripts.

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License

Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/

Publisher

Collections

Data Repository for U of M (DRUM)

Funding information

NIH: R01EB031787, P41 EB027061, P30 NS076408
Austrian Science Fund: WEAVE I 6037, P 34198, P 36328-N, KLI 1106
Christian Doppler Laboratory for MR Imaging Biomarkers (BIOMAK)

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Suggested citation

Marjanska, Malgorzata; Bogner, Wolfgang; Hingerl, Lukas; Strasser, Bernhard. (2024). 10.5 T CRT-MRSI metabolic, spectral and quality maps. Retrieved from the Data Repository for the University of Minnesota (DRUM), https://doi.org/10.13020/pp73-qj83.

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