TY - JOUR
T1 - Phantom materials for elastography
AU - Hall, Timothy J.
AU - Bilgen, Mehmet
AU - Insana, Michael F.
AU - Krouskop, Thomas A.
N1 - Funding Information:
Manuscript received December 17, 1996; accepted May 6, 1997. We gratefully acknowledge the support of NIH grant number PO1 CA64597 (Universky of Texas). T. J. Hall, M. Bilgeii, and M. F. Insana are with the University of Kansas Medical Center, Kansas City, KS 66160-7234 (e-mail: [email protected]) . T. A. Krouskop is wil h the Baylor College of Medicine, Houston, TX.
PY - 1997
Y1 - 1997
N2 - Acoustic and mechanical properties are reported for gelatin materials used to construct tissue-like phantoms for elasticity imaging (elastography). A device and procedure for measuring elastic properties are described. The measured compression forces were comparable to results obtained from finite element analysis when linear elastic media are assumed. Also measured were the stress relaxation, temporal stability, and melting point of the materials. Aldehyde concentration was used to increase the stiffness of the gelatin by controlling the amount of collagen cross-linking. A broad range of tissue-like elastic properties was achieved with these materials, although gels continued to stiffen for several weeks. The precision for elastic modulus measurements ranged from less than 0.1% for 100 kPa samples to 8.9% for soft (< 10 kPa), sticky samples.
AB - Acoustic and mechanical properties are reported for gelatin materials used to construct tissue-like phantoms for elasticity imaging (elastography). A device and procedure for measuring elastic properties are described. The measured compression forces were comparable to results obtained from finite element analysis when linear elastic media are assumed. Also measured were the stress relaxation, temporal stability, and melting point of the materials. Aldehyde concentration was used to increase the stiffness of the gelatin by controlling the amount of collagen cross-linking. A broad range of tissue-like elastic properties was achieved with these materials, although gels continued to stiffen for several weeks. The precision for elastic modulus measurements ranged from less than 0.1% for 100 kPa samples to 8.9% for soft (< 10 kPa), sticky samples.
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U2 - 10.1109/58.656639
DO - 10.1109/58.656639
M3 - Article
AN - SCOPUS:0031270262
SN - 0885-3010
VL - 44
SP - 1355
EP - 1365
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 6
ER -