Comparison of muscle ultrasound and needle electromyography findings in neuromuscular disorders.

Needle EMG and muscle ultrasound produce disparate results more often than not and identify different aspect of muscle pathology. Muscle ultrasound seems less suited for detecting mild neurogenic abnormalities. As the severity of neurogenic needle EMG abnormalities increased, muscle ultrasound abnormalities were also increasingly found. For detecting neurogenic abnormalities, visual analysis seems better suited than grayscale quantification.