Title :
Ultrasonic biomechanical strain gauge based on speckle tracking
Author :
Bertrand, M. ; Meunier, J. ; Doucet, M. ; Ferland, G.
Author_Institution :
Inst. de Genie Biomed., Ecole Polytech. de Montreal, Que., Canada
Abstract :
The potential of ultrasonic speckle tracking for characterizing tissue dynamics was illustrated and validated by an experiment with a tissue-mimicking phantom undergoing compression during a 2-D echographic-sequence acquisition. The speckle linear transformation (LT) is then computed from successive frames in the echographic sequences using an optical-flow algorithm. Compression and expansion strains computed from speckle LT agree well with induced deformation values. The feasibility of the method was then investigated in a preliminary study of skeletal muscle contraction. Results indicate the usefulness of speckle tracking as a method for assessing the contractile performance of cardiac and skeletal muscles
Keywords :
biomechanics; biomedical measurement; biomedical ultrasonics; muscle; speckle; strain gauges; 2-D echographic-sequence acquisition; cardiac muscles; contractile performance; echographic sequences; expansion strains; induced deformation values; optical-flow algorithm; skeletal muscle contraction; speckle linear transformation; successive frames; tissue dynamics; tissue-mimicking phantom; ultrasonic speckle tracking; ultrasonic strain gauge; Adaptive optics; Biomedical optical imaging; Brightness; Capacitive sensors; Equations; Image motion analysis; Image sequences; Muscles; Optical scattering; Speckle;
Conference_Titel :
Ultrasonics Symposium, 1989. Proceedings., IEEE 1989
Conference_Location :
Montreal, Que.
DOI :
10.1109/ULTSYM.1989.67110
