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Miyamoto H, Morizaki Y, Kashiyama T, et al. Grey-scale sonography and sonoelastography for diagnosing carpal tunnel syndrome. World J Radiol. 2016;8(3):281-7doi: 10.4329/wjr.v8.i3.281.
Miyamoto, H., Morizaki, Y., Kashiyama, T., & Tanaka, S. (2016). Grey-scale sonography and sonoelastography for diagnosing carpal tunnel syndrome. World journal of radiology, 8(3), 281-7. https://doi.org/10.4329/wjr.v8.i3.281
Miyamoto, Hideaki, et al. "Grey-scale sonography and sonoelastography for diagnosing carpal tunnel syndrome." World journal of radiology vol. 8,3 (2016): 281-7. doi: https://doi.org/10.4329/wjr.v8.i3.281
Miyamoto H, Morizaki Y, Kashiyama T, Tanaka S. Grey-scale sonography and sonoelastography for diagnosing carpal tunnel syndrome. World J Radiol. 2016 Mar 28;8(3):281-7. doi: 10.4329/wjr.v8.i3.281. PMID: 27027498; PMCID: PMC4807337.
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World J Radiol. 2016 Mar 28;8(3):281-7. doi: 10.4329/wjr.v8.i3.281.

Grey-scale sonography and sonoelastography for diagnosing carpal tunnel syndrome.

World journal of radiology

Hideaki Miyamoto, Yutaka Morizaki, Takahiro Kashiyama, Sakae Tanaka

Affiliations

  1. Hideaki Miyamoto, Yutaka Morizaki, Takahiro Kashiyama, Sakae Tanaka, Department of Orthopaedic Surgery, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan.

PMID: 27027498 PMCID: PMC4807337 DOI: 10.4329/wjr.v8.i3.281

Abstract

Carpal tunnel syndrome (CTS) is a common peripheral entrapment neuropathy of the median nerve at wrist level, and is thought to be caused by compression of the median nerve in the carpal tunnel. There is no standard quantitative reference for the diagnosis of CTS. Grey-scale sonography and sonoelastography (SEL) have been used as diagnostic tools. The most commonly agreed findings in grey-scale sonography for the diagnosis of CTS is enlargement of the median nerve cross-sectional area (CSA). Several authors have assessed additional parameters. "Delta CSA" is the difference between the proximal median nerve CSA at the pronator quadratus and the maximal CSA within the carpal tunnel. The "CSA ratio" is the ratio of CSA in the carpal tunnel to the CSA at the mid forearm. These additional parameters showed better diagnostic accuracy than CSA measurement alone. Recently, a number of studies have investigated the elasticity of the median nerve using SEL, and have shown that this also has diagnostic value, as it was significantly stiffer in CTS patients compared to healthy volunteers. In this review, we summarize the usefulness of grey-scale sonography and SEL in diagnosing CTS.

Keywords: Carpal tunnel syndrome; Cross-sectional area; Diagnosis; Elasticity; Gray-scale sonography; Median nerve; Sonoelastography

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