TY - GEN
T1 - On the use of dual acoustic radiation forces to induce shear wave propagation and interference pattern formation
AU - Hoyt, Kenneth
AU - Hah, Zaegyoo
AU - Hazard, Chris
AU - Parker, Kevin J.
PY - 2012/12/1
Y1 - 2012/12/1
N2 - An elasticity imaging system that uses a pair of acoustic radiation forces was developed to generate shear wave interference patterns. Ultrasound pulse-echo data and correlation-based techniques were used to estimate material deformation and to characterize the viscoelastic response. Both normal and axicon focal configurations were implemented and studied to assess impact on shear wave generation. Theoretical models were shown in simulation to describe shear wave propagation and interference pattern properties. In a tissue-mimicking phantom, experimental results were in agreement with theoretical findings. Experimental results also confirm that shear wave interference patterns can be remotely produced in tissue-mimicking material using dynamic acoustic radiation force excitation. Overall, preliminary results are encouraging and the tissue elasticity imaging system described may prove feasible for viscoelastic property characterization in tissue.
AB - An elasticity imaging system that uses a pair of acoustic radiation forces was developed to generate shear wave interference patterns. Ultrasound pulse-echo data and correlation-based techniques were used to estimate material deformation and to characterize the viscoelastic response. Both normal and axicon focal configurations were implemented and studied to assess impact on shear wave generation. Theoretical models were shown in simulation to describe shear wave propagation and interference pattern properties. In a tissue-mimicking phantom, experimental results were in agreement with theoretical findings. Experimental results also confirm that shear wave interference patterns can be remotely produced in tissue-mimicking material using dynamic acoustic radiation force excitation. Overall, preliminary results are encouraging and the tissue elasticity imaging system described may prove feasible for viscoelastic property characterization in tissue.
UR - http://www.scopus.com/inward/record.url?scp=84882375727&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84882375727&partnerID=8YFLogxK
U2 - 10.1109/ULTSYM.2012.0647
DO - 10.1109/ULTSYM.2012.0647
M3 - Conference contribution
AN - SCOPUS:84882375727
SN - 9781467345613
T3 - IEEE International Ultrasonics Symposium, IUS
SP - 2583
EP - 2586
BT - 2012 IEEE International Ultrasonics Symposium, IUS 2012
T2 - 2012 IEEE International Ultrasonics Symposium, IUS 2012
Y2 - 7 October 2012 through 10 October 2012
ER -