Title :
Viscoelasticity of lung tissue with surface wave method
Author :
Zhang, X. ; Kinnick, R.R. ; Greenleaf, J.F.
Author_Institution :
Coll. of Med., Dept. of Physiol. & Biomed. Eng., Mayo Clinic Coll. of Med., Rochester, MN
Abstract :
Considerable interest in the elastic properties of soft tissue has developed in medicine due to their clinical relevance for monitoring the progression of various diseases as well as a biomarker for cancer. Most newly developed imaging modalities use shear wave to estimate the elasticity of tissue. A novel surface wave method has been developed by us for non-invasively estimating the elasticity of tissue. In this paper, we have extended this method for measuring viscoelastic material properties of pig lungs. A small force is generated by a mechanical shaker on the lung. The surface wave on the lung is measured by laser. The viscoelasticity of a 14 Kg pig lung is measured for different pressures.
Keywords :
biomechanics; biomedical measurement; biomedical transducers; biomedical ultrasonics; cancer; laser applications in medicine; lung; measurement by laser beam; tumours; ultrasonic propagation; ultrasonic transducers; vibration measurement; viscoelasticity; cancer; disease monitoring; laser vibrometer; lung surface vibration measurement; lung tissue viscoelasticity; mass 14 kg; mechanical shaker; surface wave method; ultrasound transducer; viscoelastic material properties measurement; wave propagation; Biological tissues; Biomarkers; Biomedical imaging; Cancer; Diseases; Elasticity; Lungs; Monitoring; Surface waves; Viscosity; lung; noninvasive; surface wave; viscoelasticity;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0006
