Dynamic MR imaging of the skeletal muscle in young and senior volunteers during synchronized minimal neuromuscular electrical stimulation.

Détails

ID Serval
serval:BIB_F7E6D3936E9A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Dynamic MR imaging of the skeletal muscle in young and senior volunteers during synchronized minimal neuromuscular electrical stimulation.
Périodique
Magma
Auteur(s)
Deligianni X., Klenk C., Place N., Garcia M., Pansini M., Hirschmann A., Schmidt-Trucksäss A., Bieri O., Santini F.
ISSN
1352-8661 (Electronic)
ISSN-L
0968-5243
Statut éditorial
Publié
Date de publication
06/2020
Peer-reviewed
Oui
Volume
33
Numéro
3
Pages
393-400
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
Neuromuscular electrical stimulation (NMES)-induced isometric contraction is feasible during MRI and can be combined with acquisition of volumetric dynamic MR data, in a synchronous and controlled way. Since NMES is a potent resource for rehabilitation, MRI synchronized with NMES presents a valuable validation tool. Our aim was to show how minimal NMES-induced muscle contraction characterization, as evaluated through phase-contrast MRI, differs between senior and young volunteers.
Simultaneous NMES of the quadriceps muscle and phase-contrast imaging were applied at 3 T to 11 senior (75 ± 3 years) and 12 young volunteers (29 ± 7 years). A current sufficient to induce muscle twitch without knee extension was applied to both groups.
Strain vectors were extracted from the velocity fields and strain datasets were compared with non-parametric tests and descriptive statistics. Strain values were noticeably different between both groups at both current intensities and significant differences were observed for similar current level.
In conclusion, NMES-synchronized MRI could be successfully applied in senior volunteers with strain results clearly different from the younger volunteers. Also, differences within the senior group were detected both in the magnitude of strain and in the position of maximum strain pixels.
Mots-clé
Age, Electrical muscle stimulation, Phase-contrast sequence, Quadriceps muscle, Strain
Pubmed
Web of science
Création de la notice
10/01/2020 19:21
Dernière modification de la notice
13/06/2020 5:20
Données d'usage