Papers Published

1. Walker, W.F. and Friemel, B.H. and Bohs, L.N. and Trahey, G.E., Real-time imaging of tissue vibration using a two-dimensional speckle tracking system, IEEE 1993 Ultrasonics Symposium Proceedings (Cat. No.93CH3301-9), vol. vol.2 (1993), pp. 873 - 7 [ULTSYM.1993.339666] .
   (last updated on 2007/04/13)

   Abstract:
   Tumors in soft tissues are often detected because of their higher stiffness relative to surrounding tissues. A number of groups have constructed systems which attempt to estimate stiffness by imaging the propagation of low frequency (<1 KHz) mechanical waves using modified one-dimensional flow measurement techniques. We have constructed a system which utilizes a two-dimensional speckle tracking technique to measure vibrations in soft tissues in real-time. The vibration source and speckle tracking system are completely synchronous, so phase information is preserved. We describe the system and present the results of initial calibration studies

   Keywords:
   biomechanics;biomedical ultrasonics;calibration;real-time systems;speckle;vibration measurement;