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Keywords:

  • elastography;
  • laser vibrometry;
  • muscle stiffness;
  • skeletal muscles;
  • surface waves

ABSTRACT

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. Muscle Nerve 50: 133–135, 2014