Partial volume correction for in vivo (23)Na-MRI data of the human brain

NeuroImage
Sebastian C NiesporekArmin M Nagel

Abstract

The concentration of sodium is a functional cell parameter and absolute quantification can be interesting for diagnostical purposes. The accuracy of sodium magnetic resonance imaging ((23)Na-MRI) is strongly biased by partial volume effects (PVEs). Hence our purpose was to establish a partial volume correction (PVC) method for (23)Na-MRI. The existing geometric transfer matrix (GTM) correction method was transferred from positron emission tomography (PET) to (23)Na-MRI and tested in a phantom study. Different parameters, as well as accuracy of registration and segmentation were evaluated prior to first in vivo measurements. In vivo sodium data-sets of the human brain were obtained at B0=7T with a nominal spatial resolution of (3mm)(3) using a density adapted radial pulse sequence. A volunteer study with four healthy subjects was performed to measure partial volume (PV) corrected tissue sodium concentration (TSC) which was verified by means of an intrinsic correction control. In the phantom study the PVC algorithm yielded a good correction performance and reduced the discrepancy between the measured sodium concentration value and the expected value in the smallest compartments of the phantom by 11% to a mean PVE induced discrepa...Continue Reading

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Citations

Apr 12, 2016·NMR in Biomedicine·Armin M NagelVictor D Schepkin
Feb 11, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Tanja PlattNicolas G R Behl
Jul 31, 2018·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Wieland A WorthoffN Jon Shah
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May 17, 2019·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Yupeng LiaoN Jon Shah
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Jun 13, 2019·Topics in Magnetic Resonance Imaging : TMRI·Sebastian C NiesporekTanja Platt
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Jul 23, 2020·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Jeremy W GordonPeder E Z Larson
Sep 2, 2020·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Lena V GastArmin M Nagel
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Jun 2, 2021·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Fabian J KratzerArmin M Nagel
Oct 16, 2021·NMR in Biomedicine·Paul PolakMichael D Noseworthy

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