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Extensions of the scattering-object function and the pulser-receiver impulse response in the field II formalism
1School of Biomedical Engineering, Science and Health Systems Drexel University, Philadelphia, PA 19104, USA. bloomfpe@drexel.edu
Abstract:
The pulse-echo impulse-response format in the Field II formalism is generalized to separately located transmitter and receiver. To first order in sound velocity and density perturbations, identical results for the scattering-object function are obtained for the Morse-Ingard and the Chernov formulation in both the temporal and frequency domains: f(s)=-[2Delta(c/c)+(Delta(rho/rho))(1-cos(theta))] where for ultrasonic pulse-echo or transmission modality, cos(theta) approximately -1 or +1, respectively.
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