Shear wave generation with steered ultrasound push beams

Elasticity imaging is becoming established as a means of assisting in diagnosis of certain diseases. Shear wave-based methods have been developed to perform elasticity measurements in soft tissue. We propose a novel method that uses steered push beams (SPB) that can be applied for beam formation for...

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Bibliographic Details
Published inProceedings - IEEE Ultrasonics Symposium pp. 647 - 650
Main Authors Nabavizadeh, Alireza, Pengfei Song, Shigao Chen, Greenleaf, James F., Urban, Matthew W.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2014
Subjects
Acoustics
Arrays
axicon
CUSE
Elasticity
Phantoms
Shear wave
Transducers
Ultrasonic imaging
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Summary:Elasticity imaging is becoming established as a means of assisting in diagnosis of certain diseases. Shear wave-based methods have been developed to perform elasticity measurements in soft tissue. We propose a novel method that uses steered push beams (SPB) that can be applied for beam formation for shear wave generation. In SPB methods we use unfocused beams that are steered at specific angles. The interaction of these steered beams causes shear waves to be generated in more of a random nature than conventional methods. We designed an optimization scheme for designing different configurations. We tested these configurations in elastic phantoms along and compared with results with measurements made with Comb push Ultrasound Shear Elastography (CUSE). The SPB method provides a flexible method to obtain shear wave speed maps with high depth-of-field.
ISSN:1051-0117
DOI:10.1109/ULTSYM.2014.0159