Title :
Tissue mimicking material for intravascular elasticity imaging
Author :
de Korte, C.L. ; Cespedes, E.I. ; van der Steen, A.F.W. ; Norder, B. ; Nijenhuis, K. Te
Author_Institution :
Thoraxcentre, Erasmus Univ., Rotterdam, Netherlands
fDate :
31 Oct-3 Nov 1996
Abstract :
The mechanical properties of agar-gelatin gels used to construct vessel mimicking phantoms for ultrasonic elasticity studies are investigated. Gels with varying compression moduli are made using a gelatin solution (8% by weight) with a variable amount of agar (1%-3% by weight). Carborundum particles were added as scattering material. The modulus is determined using a dynamic mechanical analyzer. The compression modulus of the gels is strongly dependent on the gelling temperature, age and the actual temperature of the samples. Compression moduli spanning a usable range for vascular phantom construction can be achieved by varying the amount of agar. Phantoms constructed from these gels are well suited to serve as a model for plaque containing vessels
Keywords :
biomechanics; biomedical ultrasonics; elastic moduli; gelatin; gels; stress-strain relations; viscoelasticity; agar-gelatin gels; carborundum particles; dynamic mechanical analysis; gelling temperature; intravascular elasticity imaging; mechanical properties; plaque containing vessels; porcine skin gelatin; stress-strain curve; tissue mimicking material; ultrasonic elasticity studies; varying compression moduli; vessel mimicking phantoms; Acoustic scattering; Biological materials; Elasticity; Frequency; Imaging phantoms; Materials science and technology; Mechanical factors; Particle scattering; Temperature dependence; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.652011
