Sonographic evaluation of the peripheral nerve in diabetic patients: The relationship between nerve conduction studies, echo intensity, and cross-sectional area

Tsuneo Watanabe, Hiroyasu Ito, Ayako Sekine, Yuriko Katano, Takashi Nishimura, Yoshihiro Kato, Jun Takeda, Mitsuru Seishima, Toshio Matsuoka

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)

Abstract

Objective. Early detection of nerve dysfunction is important to provide appropriate care for patients with diabetic polyneuropathy. The aim of this study was to assess the echo intensity of the peripheral nerve and to evaluate the relationship between nerve conduction study results and sonographic findings in patients with type 2 diabetes mellitus. Methods. Thirty patients with type 2 diabetes (mean ± SD, 59.8 ± 10.2 years) and 32 healthy volunteers (mean, 53.7 ± 13.9 years) were enrolled in this study. The cross-sectional area (CSA) and echo intensity of the peripheral nerve were evaluated at the carpal tunnel and proximal to the wrist (wrist) of the median nerve and in the tibial nerve at the ankle. Results. There was a significant increase in the CSA and hypoechoic area of the nerve in diabetic patients compared with controls (wrist, 7.1 ± 2.0 mm2, 62.3% ± 3.0%; ankle, 8.9 ± 2.8 mm2, 57.6% ± 3.9%; and wrist, 9.8 ± 3.7 mm2, 72.3% ± 6.6%; ankle, 15.0 ± 6.1 mm2, 61.4% ± 5.3% in controls and diabetic patients, respectively; P < .05). Cross-sectional areas were negatively correlated with reduced motor nerve conduction velocity and delayed latency. Conclusions. These results suggest that sonographic examinations are useful for the diagnosis of diabetic neuropathy.

Original languageEnglish
Pages (from-to)697-708
Number of pages12
JournalJournal of Ultrasound in Medicine
Volume29
Issue number5
DOIs
Publication statusPublished - 01-05-2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

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