Reply to ’’Radiation pattern of partially electroded piezoelectric transducers’’

Breazeale, M. A.; Martin, Franklin D.; Blackburn, Bruce

doi:10.1121/1.387203

Cited by 12 publications

(1 citation statement)

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“…In a recent paper, [13 transducer is reduced, the fringing of the electric field lines and lines of mechanical stress in the piezoelectric material will produce a radial profile which approximates a Gaussian function. Claus and Zerwekh 1141 have designed a transducer which generates a two-dimensional Gaussian field by the control of both the position of multiple circular electrodes and the voltage applied to each electrode.…”

Section: Gaussian Beam Model For Focused Ultrasoundmentioning

confidence: 99%

An Analytical Study of Doppler Ultrasound Systems

Azimi

Kak

1985

Ultrason Imaging

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The past theoretical contributions in Doppler ultrasonic imaging have borrowed heavily from the electromagnetic case. In these contributions, most points of departure between the ultrasonic and electromagnetic cases were taken care of by heuristic incorporation of factors in the derived formulas. A theory is presented that is more complete in the sense that it specifically accounts for the diffracted fields of the transducer aperture (assumed to be a source of a Gaussian focussed beam), the interaction of these fields with the scattering sites, and the interaction of the transducer aperture with the back scattered fields. The theoretical formulation was used to perform a series of computer simulation studies on Doppler ultrasound. The control afforded by the theory over different parameters of the system has allowed us to study the effect of the different signal bandwidths, tissue attenuation constants, and the role of transducer design in the ultrasound Doppler systems.

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Section: Gaussian Beam Model For Focused Ultrasoundmentioning

confidence: 99%