T2 mapping of the distal sciatic nerve in healthy subjects and patients suffering from lumbar disc herniation with nerve compression.
Magnetic resonance spectroscopy
Peripheral nervous system diseases
Sciatica
Spine
Journal
Magma (New York, N.Y.)
ISSN: 1352-8661
Titre abrégé: MAGMA
Pays: Germany
ID NLM: 9310752
Informations de publication
Date de publication:
Oct 2020
Oct 2020
Historique:
received:
15
08
2019
accepted:
28
01
2020
revised:
22
12
2019
pubmed:
13
2
2020
medline:
16
9
2021
entrez:
13
2
2020
Statut:
ppublish
Résumé
To measure T2 values for magnetic resonance neurography (MRN) of the healthy distal sciatic nerve and compare those to T2 changes in patients with nerve compression. Twenty-one healthy subjects and five patients with sciatica due to disc herniation underwent MRN using a T2-prepared turbo spin echo (TSE) sequence of the distal sciatic nerve bilaterally. Six and one of those healthy subjects further underwent a commonly used multi-echo spin-echo (MESE) sequence and magnetic resonance spectroscopy (MRS), respectively. T2 values derived from the T2-prepared TSE sequence were 44.6 ± 3.0 ms (left) and 44.5 ± 2.6 ms (right) in healthy subjects and showed good inter-reader reliability. In patients, T2 values of 61.5 ± 6.2 ms (affected side) versus 43.3 ± 2.4 ms (unaffected side) were obtained. T2 values of MRS were in good agreement with measurements from the T2-prepared TSE, but not with those of the MESE sequence. A T2-prepared TSE sequence enables precise determination of T2 values of the distal sciatic nerve in agreement with MRS. A MESE sequence tends to overestimate nerve T2 compared to T2 from MRS due to the influence of residual fat on T2 quantification. Our approach may enable to quantitatively assess direct nerve affection related to nerve compression.
Identifiants
pubmed: 32048099
doi: 10.1007/s10334-020-00832-w
pii: 10.1007/s10334-020-00832-w
pmc: PMC7502059
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
713-724Subventions
Organisme : Philips Healthcare
ID : -
Organisme : H2020 European Research Council
ID : 637164 - iBack - ERC-2014-STG
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