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1.
Medicine (Baltimore) ; 100(3): e23999, 2021 Jan 22.
Artigo em Inglês | MEDLINE | ID: mdl-33545992

RESUMO

ABSTRACT: The purpose of this study is to investigate sonoelastographic features of the tibial nerve.The study included 72 tibial nerves in 36 healthy subjects. High resolution ultrasound and Shear wave elastography were used to evaluate the tibial nerve. Cross sectional area and stiffness were measured.The mean cross sectional area of the tibial nerve was 13.4 mm2. The mean shear elastic modulus of the tibial nerve in the short axis was 23.3 kPa. The mean shear elastic modulus of the tibial nerve in long axis was 26.1 kPa. The tibial nerve elastic modulus also showed no correlation with cross sectional area neither in the long axis nor short axis. Age, height, weight, and body mass index showed no correlation with tibial nerve elastic modulus in short or long axes.The elastic modulus of the tibial nerve has been determined in healthy subjects and can serve as a reference for future assessment of polyneuropathy.


Assuntos
Técnicas de Imagem por Elasticidade/estatística & dados numéricos , Nervo Tibial/diagnóstico por imagem , Ultrassonografia/estatística & dados numéricos , Adulto , Módulo de Elasticidade/fisiologia , Técnicas de Imagem por Elasticidade/métodos , Feminino , Voluntários Saudáveis , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência , Nervo Tibial/fisiologia , Ultrassonografia/métodos , Adulto Jovem
2.
Medicine (Baltimore) ; 100(2): e24071, 2021 Jan 15.
Artigo em Inglês | MEDLINE | ID: mdl-33466166

RESUMO

ABSTRACT: The study included 38 ulnar nerves in 20 healthy subjects. High-resolution ultrasound and Shear wave elastography were used to evaluate the ulnar nerve at the mid forearm. The mean cross-sectional area of the ulnar nerve was 7.1 mm2. The mean shear elastic modulus of the nerve in the short axis was 27.4 kPa. The mean shear elastic modulus of the nerve in long axis was 24.7 kPa. No statistical relation could be noted between elasticity measurements in long and short axes. The ulnar nerve elastic modulus also showed no correlation with CSA neither in the long axis nor short axis. Age, height, weight, and body mass index showed no correlation with the ulnar elastic modulus in short or long axes. The elastic modulus of the ulnar nerve has been determined in healthy subjects and can serve as a reference for future assessment of compressive neuropathies of the ulnar nerve.


Assuntos
Técnicas de Imagem por Elasticidade/métodos , Antebraço/diagnóstico por imagem , Antebraço/inervação , Nervo Ulnar/diagnóstico por imagem , Adulto , Feminino , Voluntários Saudáveis , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência
3.
J Int Med Res ; 49(1): 300060520987938, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-33459089

RESUMO

OBJECTIVE: This study was performed to examine the sonoelastographic features of the radial nerve in healthy subjects. METHODS: In this observational cross-sectional study, shear wave elastography was used to evaluate the radial nerve. The cross-sectional area and stiffness were measured. RESULTS: The study included 37 nerves in 20 healthy adult subjects. The mean cross-sectional area of the radial nerve at the arm was 6.1 mm2. The mean stiffness of the radial nerve in the short axis was 30.3 kPa, and that in the long axis was 34.9 kPa. The elasticity measurements were significantly different between the long axis and short axis. CONCLUSION: The elastic modulus of the radial nerve was studied in healthy subjects and can serve as a reference for future assessment of different radial nerve pathologies.


Assuntos
Técnicas de Imagem por Elasticidade , Adulto , Módulo de Elasticidade , Voluntários Saudáveis , Humanos , Nervo Radial/diagnóstico por imagem , Reprodutibilidade dos Testes
4.
Neurol Sci ; 42(6): 2425-2429, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-33074450

RESUMO

OBJECTIVES: The objective of this study is to estimate the reference values of the brachial plexus roots at the interscalene groove. The physical and demographic characteristics of 59 healthy adult volunteers were studied. The CSA reference values and their correlations with weight, height, age, body mass index (BMI). METHODS: Fifty nine (27 males, 32 females) subjects were enrolled in the study. The mean cross sectional area of C5, C6 and C7 nerve roots were obtained. RESULTS: The mean CSA of the brachial plexus roots was as follows: C5 nerve root was 5.1 mm2 (range 1.7-11.1 ± 1.9 SD), C6 nerve root CSA 5.8 mm2 (range 1.7-12 ± 2.4 SD), and C7 nerve root 6.3 (range 1.6-19.6 ± 3.4 SD). There was a significant statistical difference between both sexes in our study. No statistical significant difference in tissue stiffness between dominant and nondominant hands. No statistical correlation was found between the CSA of the cervical nerve roots and different demographic factors. There was a positive statistical correlation between the CSA of C5 and both C6 and C7 nerve roots. Also positive significant statistical correlation was noted between the CSA of C6 and C7 nerve roots. CONCLUSION: The CSA reference values of the C5-C7 nerve roots has been determined in asymptomatic individuals and can serve as a reference when studying pathological conditions of these structures.


Assuntos
Plexo Braquial , Adulto , Plexo Braquial/diagnóstico por imagem , Feminino , Humanos , Masculino , Nervos Periféricos , Valores de Referência , Raízes Nervosas Espinhais/diagnóstico por imagem , Ultrassonografia
5.
Medicine (Baltimore) ; 99(37): e22120, 2020 Sep 11.
Artigo em Inglês | MEDLINE | ID: mdl-32925760

RESUMO

The purpose of this study is to study sonoelastographic features of the saphenous nerve.The study included 72 saphenous nerves in 36 healthy subjects. High resolution ultrasound and Shearwave elastography were used to evaluate the saphenous nerve. Cross sectional area (CSA) and stiffness were measured.The mean CSA of the saphenous nerve was 5.7 mm. The mean shear elastic modulus of the saphenous nerve in the short axis was 29.5 kPa. The mean shear elastic modulus of the saphenous nerve in long axis was 29.9 kPa. The saphenous nerve elastic modulus also showed no correlation with CSA in neither the long axis nor short axis. Positive correlation between elasticity measurements in the long and short axes. Age, height, weight, and BMI showed no correlation with saphenous nerve elastic modulus in short or long axes.The elastic modulus of the saphenous nerve has been determined in healthy subjects and can serve as a reference for future assessment of the saphenous nerve before different procedures.


Assuntos
Técnicas de Imagem por Elasticidade , Elasticidade/fisiologia , Nervos Periféricos/diagnóstico por imagem , Nervos Periféricos/fisiologia , Coxa da Perna/inervação , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência , Coxa da Perna/diagnóstico por imagem , Adulto Jovem
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