System for real-time elastography

A system is presented that continuously displays images of the strain distribution with up to 5 frame/s obtained by manually or semi-manually compressing or releasing the tissue during an ultrasound examination. The RF-echo data are sampled by a conventional desktop PC and images of the axial strain are calculated using the fast phase root seeking technique. Up to five elastograms per second of a tissue region of approximately 3.7 cm /spl times/3.5 cm are displayed.

[1]  J. Ophir,et al.  Elastography: A Quantitative Method for Imaging the Elasticity of Biological Tissues , 1991, Ultrasonic imaging.

[2]  Stanislav Emelianov,et al.  Quantitative elasticity imaging , 1993 .

[3]  J. Ophir,et al.  Reduction of Image Noise in Elastography , 1993 .

[4]  B. Garra,et al.  Elastography of breast lesions: initial clinical results. , 1997, Radiology.

[5]  T. Hall,et al.  2-D companding for noise reduction in strain imaging , 1998, IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control.

[6]  F. Kallel,et al.  A Least-Squares Strain Estimator for Elastography , 1997, Ultrasonic imaging.