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Quantitative ultrasound image analysis of the supraspinatus muscle
P K Nielsen1, B R Jensen, T Darvann
1Department of Physiology, National Institute of Occupational Health, Copenhagen, Denmark.
Objective:
To develop and validate a method, based on quantitative ultrasound image analysis, to objectively analyse and characterize the ultrasound images of m. supraspinatus.
Design:
Quantitative ultrasonography was performed on the supraspinatus muscle of 14 healthy subjects.
Methods:
A computerized analysis using first-order grey-scale statistics to evaluate the muscle tissue composition was developed and validated.
Results:
Data from one scanning site were not representative for the whole muscle due to muscle inhomogenity. Using first-order grey-scale statistics the scanning direction was of no importance. By using a scanning session consisting of three different scanning sites along the muscle in two directions, longitudinally and transversely, to characterize the tissue composition of the muscle, a high day-to-day reproducibility was obtained.
Conclusion:
The described scanning session is a relatively sensitive and reproducible method for studying the muscle tissue composition. RelevanceQuantitative ultrasonography seems to be a potential clinical and occupational examination method to detect tissue composition of myalgic muscles compared to healthy muscles.