“Million dollar nerve” magnetic resonance neurography: first normal and pathological findings

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Autor(es): dc.creatorSilva, Jonadab dos Santos-
Autor(es): dc.creatorBarros, Larissa Fidalgo Pereira de-
Autor(es): dc.creatorSouza, Renan de Freitas-
Autor(es): dc.creatorMendonça, Silvana Machado-
Autor(es): dc.creatorCosta, Flávia Martins-
Autor(es): dc.creatorLandeiro, José Alberto-
Autor(es): dc.creatorLopes, Fernanda Cristina Rueda-
Autor(es): dc.creatorAcioly, Marcus André-
Data de aceite: dc.date.accessioned2024-07-11T18:06:11Z-
Data de disponibilização: dc.date.available2024-07-11T18:06:11Z-
Data de envio: dc.date.issued2023-06-23-
Data de envio: dc.date.issued2023-06-23-
Data de envio: dc.date.issued2021-
Fonte completa do material: dc.identifierhttp://app.uff.br/riuff/handle/1/29206-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/763572-
Descrição: dc.descriptionObjectives: To evaluate prospectively the feasibility of magnetic resonance neurography (MRN) in identifying the anatomical characteristics of thenar muscular branch (TMB) of the median nerve, also known as the “million dollar nerve”, in patients and controls. Methods: Thirteen patients affected by carpal tunnel syndrome (CTS) and four healthy controls had their hands scanned on a 3T MR imaging scanner for TMB visualization. Median nerve anatomical variations were classified into four groups according to the Poisel’s classification system modified by Lanz. TMB signal intensity and diameter were assessed for the diagnosis of neuropathy. Results: TMB was successfully identified in all patients and subjects by using MRN. The most suitable pulse sequences to identify and measure nerve diameter were 3D DW-PSIF and T2-FS-TSE. The axial oblique and sagittal oblique planes are complementary in demonstrating its entire course. TMB had mostly an extraligamentous course with radial side origin (93.8%, each). All patients experienced increased T2 signal intensity (P < 0.001) and thickened nerves. Mean TMB diameters were 1.27 ± 0.21 mm (range, 1.02–1.74 mm) and 0.87 ± 0.16 mm (0.73–1.08 mm) (P = 0.008) in the patient and control groups, respectively. Conclusion: MRN is a reliable imaging technique for identification and anatomical characterization of TMB in patients affected by CTS. This innovative imaging workup may therefore be included in the preoperative evaluation of patients scheduled for carpal tunnel release, especially in CTS with TMB involvement or even in isolated TMB neuropathy-
Descrição: dc.descriptionSim-
Descrição: dc.descriptionObjectives: To evaluate prospectively the feasibility of magnetic resonance neurography (MRN) in identifying the anatomical characteristics of thenar muscular branch (TMB) of the median nerve, also known as the “million dollar nerve”, in patients and controls. Methods: Thirteen patients affected by carpal tunnel syndrome (CTS) and four healthy controls had their hands scanned on a 3T MR imaging scanner for TMB visualization. Median nerve anatomical variations were classified into four groups according to the Poisel’s classification system modified by Lanz. TMB signal intensity and diameter were assessed for the diagnosis of neuropathy. Results: TMB was successfully identified in all patients and subjects by using MRN. The most suitable pulse sequences to identify and measure nerve diameter were 3D DW-PSIF and T2-FS-TSE. The axial oblique and sagittal oblique planes are complementary in demonstrating its entire course. TMB had mostly an extraligamentous course with radial side origin (93.8%, each). All patients experienced increased T2 signal intensity (P < 0.001) and thickened nerves. Mean TMB diameters were 1.27 ± 0.21 mm (range, 1.02–1.74 mm) and 0.87 ± 0.16 mm (0.73–1.08 mm) (P = 0.008) in the patient and control groups, respectively. Conclusion: MRN is a reliable imaging technique for identification and anatomical characterization of TMB in patients affected by CTS. This innovative imaging workup may therefore be included in the preoperative evaluation of patients scheduled for carpal tunnel release, especially in CTS with TMB involvement or even in isolated TMB neuropathy.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Publicador: dc.publisherEuropean Society of Radiology-
Publicador: dc.publisherNiterói, RJ-
Relação: dc.relationEUROPEAN RADIOLOGY JOURNAL. Vienna: European Society of Radiology, 1991- . Mensal. ISSN: 1432-1084-
Direitos: dc.rightsOpen Access-
Direitos: dc.rightsCC-BY-SA-
Palavras-chave: dc.subjectCarpal tunnel syndrome-
Palavras-chave: dc.subjectMagnetic resonance imaging-
Palavras-chave: dc.subjectMedian nerve-
Palavras-chave: dc.subjectPeripheral nervous system diseases-
Palavras-chave: dc.subjectSíndrome do túnel carpal-
Palavras-chave: dc.subjectEspectroscopia de ressonância magnética-
Palavras-chave: dc.subjectNeuropatia periférica-
Palavras-chave: dc.subjectCarpal tunnel syndrome-
Palavras-chave: dc.subjectMagnetic resonance imaging-
Palavras-chave: dc.subjectMedian nerve-
Palavras-chave: dc.subjectPeripheral nervous system diseases-
Título: dc.title“Million dollar nerve” magnetic resonance neurography: first normal and pathological findings-
Título: dc.title"Million dollar nerve” magnetic resonance neurography: first normal and pathological findings-
Tipo de arquivo: dc.typeArtigo de periódicos-
Aparece nas coleções:Repositório Institucional da Universidade Federal Fluminense - RiUFF

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