Experimental validation of acoustic radiation force induced shear wave interference patterns

Kenneth Hoyt, Zaegyoo Hah, Chris Hazard, Kevin J. Parker

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


A novel elasticity imaging system founded on the use of acoustic radiation forces from a dual beam arrangement to generate shear wave interference patterns is described. Acquired pulse-echo data and correlation-based techniques were used to estimate the resultant deformation and to visualize tissue viscoelastic response. The use of normal versus axicon focal configurations was investigated for effects on shear wave generation. Theoretical models were introduced and shown in simulation to accurately predict shear wave propagation and interference pattern properties. In a tissue-mimicking phantom, experimental results are in congruence with theoretical predictions. Using dynamic acoustic radiation force excitation, results confirm that shear wave interference patterns can be produced remotely in a particular tissue region of interest (ROI). Overall, preliminary results are encouraging and the system described may prove feasible for interrogating the viscoelastic properties of normal and diseased tissue types.

Original languageEnglish (US)
Pages (from-to)21-30
Number of pages10
JournalPhysics in medicine and biology
Issue number1
StatePublished - Jan 7 2012

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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