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Assessment of muscle stiffness using a continuously scanning laser-Doppler vibrometer
Muhammad Salman1, Karim G Sabra, Minoru Shinohara
1School of Mechanical Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, Georgia, 30332-0356, USA.
Introduction:
A stand-alone and low-cost elastography technique has been developed using a single continuously scanning laser Doppler vibrometer.
Methods:
This elastography technique is used to measure the propagation velocity of surface vibrations over superficial skeletal muscles to assess muscle stiffness.
Results:
Systematic variations in propagation velocity depending on the contraction level and joint position of the biceps brachii were demonstrated in 10 subjects.
Conclusions:
This technique may assist clinicians in characterizing muscle stiffness (or tone) changes due to neuromuscular disorders.
