Title :
Viscoelastic properties of tissue mimicking phantoms for ultrasound elastograpghy
Author :
Kumar, Kush ; Jayashankar, V. ; Kumar, Varadarajan Jagadeesh ; Andrews, M.E. ; Mishra, Akhilesh Kumar
Author_Institution :
Dept. of Electr. Eng., IIT Madras, Chennai, India
Abstract :
Most biological soft tissues exhibit viscous behavior in addition to their well known elastic properties. Polyacrylamide gel based tissue mimicking phantoms have been developed. The viscoelastic properties of these phantoms were measured by subjecting the samples to cyclic loading. Samples prepared with varying concentration of monomer were considered so as to cover the normal and pathological lesions. Results obtained in the measurement are fit to three models - Maxwell, Kelvin-Voigt (KV) and Kelvin-Voigt fractional derivative (KVFD) models, in order to determine the best fitting model. KVFD model is found to be best fitting model for the experimental data obtained.
Keywords :
biological tissues; biomechanics; biomedical ultrasonics; diseases; phantoms; polymer gels; viscoelasticity; wounds; Kelvin-Voigt fractional derivative model; Maxwell models; cyclic loading; monomer concentration; pathological lesions; polyacrylamide gel; tissue mimicking phantoms; ultrasound elastograpghy; viscoelastic properties; Biological tissues; Elasticity; Force measurement; Imaging phantoms; Lesions; Pathology; Strain measurement; Ultrasonic imaging; Ultrasonic variables measurement; Viscosity; elastography; loss modulus; phantom; storage modulus; viscoelastic;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-3352-0
DOI :
10.1109/IMTC.2009.5168694
