Influence of temperature on sonographic images of the median nerve for the diagnosis of carpal tunnel syndrome: a case control study
| Autor: | Valeria Chiu, Shinn-Kuang Lin, Yi-Wei Chang, You-Wei Wang, Chii-Jen Chen, Yi-Shiung Horng |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Male
medicine.medical_specialty Skin temperature Neural Conduction Power doppler Vascularity Medical technology Medicine Humans Radiology Nuclear Medicine and imaging R855-855.5 Carpal tunnel syndrome Ultrasonography business.industry Research Power Doppler Case-control study Ultrasonography Doppler Blood flow Middle Aged medicine.disease Median nerve Median Nerve Case-Control Studies Female Radiology medicine.symptom business |
| Zdroj: | BMC Medical Imaging, Vol 21, Iss 1, Pp 1-9 (2021) BMC Medical Imaging |
| ISSN: | 1471-2342 |
| Popis: | Background In addition to nerve conduction studies (NCSs), ultrasonography has been widely used as an alternative tool for diagnosing carpal tunnel syndrome (CTS). Although the results of NCSs are influenced by local skin temperature, few studies have explored the effects of skin temperature on ultrasonography of the median nerve. Since swelling and intraneural blood flow of the median nerve might be influenced by local temperature changes, the aim of this study was to evaluate the cross-sectional area (CSA) and intraneural blood flow of the median nerve under three skin temperatures (30 °C, 32 °C, 34 °C). Methods Fifty patients with CTS and 50 healthy volunteers were consecutively recruited from a community hospital. Each participant received physical examinations and NCSs and underwent ultrasonography, including power Doppler, to evaluate intraneural vascularity. Results The CSA of the median nerve in the CTS patients was significantly larger than that in the healthy controls at all three temperatures. However, significant differences in the power Doppler signals of the median nerve between the two studied groups were observed only at 30 and 32 °C, not at 34 °C. Conclusion The significant difference in the intraneural vascularity of the median nerve between the patients with CTS and the healthy subjects was lost at higher temperatures (34 °C). Therefore, the results of power Doppler ultrasonography in diagnosing CTS should be cautiously interpreted in patients with a high skin temperature or those who reside in warm environments. |
| Databáze: | OpenAIRE |
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