Quantitative abdominal sodium MRI combined with 32-channel proton pTx MRI at 7 Tesla in a large field-of-view.

ABSTRACT:

Purpose

To combine large field-of-view abdominal  1H$$ {}^1\mathrm{H} $$ and quantitative sodium (  23Na$$ {}^{23}\mathrm{Na} $$ ) MRI in the same position at 7 T to enable the quantification of the tissue sodium concentration via  23Na$$ {}^{23}\mathrm{Na} $$ MRI and the anatomical assignment in  1H$$ {}^1\mathrm{H} $$ images without repositioning in several tissues and organs at once.

Methods

A custom-built  23Na$$ {}^{23}\mathrm{Na} $$ birdcage coil and reference vial setup together with a 32-channel  1H$$ {}^1\mathrm{H} $$ pTx array were employed at 7 T to allow dual-nuclei MRI in the same position for a field-of-view (FOV) of (400×400×400)mm3$$ \left(400\times 400\times 400\right)\kern0.3em {\mathrm{mm}}^3 $$ . T1$$ {T}_1 $$ relaxation effects in the reference vials and

SUBMITTER: Scheipers AK 

PROVIDER: S-EPMC12393210 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature