INTRODUCTION: We assessed the potential use of quantitative ultrasound (QUS) in the evaluation hand muscles affected by upper extremity mononeuropathies. METHODS: The gray scale levels (GSLs) of abductor pollicis brevis (APB), abductor digiti minimi (ADM), and first dorsal interosseous (FDI) of 30 healthy and 30 upper extremity mononeuropathy patients were measured and compared with standard electrophysiological values. RESULTS: Mean GSL was elevated in 34 APBs of carpal tunnel syndrome patients and 18 FDIs of ulnar neuropathy patients (e.g., FDI mean GSL (interquartile range) 31.5 (27.3~43.8) arbitrary units for patients and 24.0(23.0~29.0) for healthy subjects (P = 0.020)). GSL correlated with motor response amplitudes (Spearman's rho (ρ) = -0.39, P = 0.002 in APB, ρ = -0.72, P = 0.002 in FDI, and ρ = -0.43, P = 0.013 in ADM). The APB GSL correlated with electromyographic severity and disease duration (ρ = 0.46, P < 0.001 and ρ = 0.45, P = 0.003). CONCLUSIONS: Muscle QUS may serve as a useful tool in upper extremity mononeuropathy evaluation. Further study of this concept is recommended.
INTRODUCTION: We assessed the potential use of quantitative ultrasound (QUS) in the evaluation hand muscles affected by upper extremity mononeuropathies. METHODS: The gray scale levels (GSLs) of abductor pollicis brevis (APB), abductor digiti minimi (ADM), and first dorsal interosseous (FDI) of 30 healthy and 30 upper extremity mononeuropathypatients were measured and compared with standard electrophysiological values. RESULTS: Mean GSL was elevated in 34 APBs of carpal tunnel syndromepatients and 18 FDIs of ulnar neuropathypatients (e.g., FDI mean GSL (interquartile range) 31.5 (27.3~43.8) arbitrary units for patients and 24.0(23.0~29.0) for healthy subjects (P = 0.020)). GSL correlated with motor response amplitudes (Spearman's rho (ρ) = -0.39, P = 0.002 in APB, ρ = -0.72, P = 0.002 in FDI, and ρ = -0.43, P = 0.013 in ADM). The APBGSL correlated with electromyographic severity and disease duration (ρ = 0.46, P < 0.001 and ρ = 0.45, P = 0.003). CONCLUSIONS: Muscle QUS may serve as a useful tool in upper extremity mononeuropathy evaluation. Further study of this concept is recommended.
Authors: Craig M Zaidman; Jim S Wu; Kush Kapur; Amy Pasternak; Lavanya Madabusi; Sung Yim; Adam Pacheck; Heather Szelag; Tim Harrington; Basil T Darras; Seward B Rutkove Journal: Ann Neurol Date: 2017-05-04 Impact factor: 10.422
Authors: Natalia Maria Maurits; Anna Elizabeth Bollen; Alphons Windhausen; Aeiko Eppo Jurjen De Jager; Johannes Harmen Van Der Hoeven Journal: Ultrasound Med Biol Date: 2003-02 Impact factor: 2.998