Extensions of the scattering-object function and the pulser-receiver impulse response in the field II formalism.
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.
Bloomfield
Philip E
PE
School of Biomedical Engineering, Science and Health Systems Drexel University, Philadelphia, PA 19104, USA. bloomfpe@drexel.edu
D000465:Algorithms; D006801:Humans; D008962:Models, Theoretical; D012542:Scattering, Radiation; D014465:Ultrasonics; D016217:Ultrasonography, Mammary