Wallerian degeneration demonstrated by magnetic resonance: spectroscopic measurements on peripheral nerve.

Abstract:

:Wallerian degeneration of rat sciatic nerves was induced by nerve section. Fifteen days later the degenerated nerves were compared with the intact contralateral nerves from the same animal. Histological sections showed the changes typical of wallerian degeneration: axonal degeneration and secondary demyelination. The freshly dissected nerves were analyzed by magnetic resonance (MR) spectroscopy at 10 MHz, and the water content was determined by dehydration. In the degenerated nerves there was a marked prolongation of both T1 and T2 relaxation times, accompanied by an increase of water content. The results demonstrate the sensitivity of MR for detection of secondary demyelination and disintegration of nerve structures. These results suggest that it should be possible to detect wallerian degeneration in MR images; this will have an important impact on neuropathological diagnosis of central and peripheral nervous system lesions.

journal_name

Radiology

journal_title

Radiology

authors

Jolesz FA,Polak JF,Ruenzel PW,Adams DF

doi

10.1148/radiology.152.1.6729140

subject

Has Abstract

pub_date

1984-07-01 00:00:00

pages

85-7

issue

1

eissn

0033-8419

issn

1527-1315

journal_volume

152

pub_type

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