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
Radiologyjournal_title
Radiologyauthors
Jolesz FA,Polak JF,Ruenzel PW,Adams DFdoi
10.1148/radiology.152.1.6729140subject
Has Abstractpub_date
1984-07-01 00:00:00pages
85-7issue
1eissn
0033-8419issn
1527-1315journal_volume
152pub_type
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