A general wave equation for sound propagation in a viscoelastic medium is obtained. From this general equation an approximate inhomogeneous wave equation is derived by perturbation methods. Born's and Rytov's approximations are considered. The equation is finally brought into a form which provides transformation properties under rotation of the test object required for diffraction tomography.
MuellerR. K.KavehM.IversonR. D., A New Approach to Acoustic Tomography Using Diffraction Techniques, Acoustical Imaging, Vol. 8, MetherellA., ed., pp. 615–628 (Plenum Press, New York, 1978).
2.
KavehM.MuellerR. K.IversonR. D., Ultrasonic tomography based on perturbation solutions of the wave equation, Computer Graphics and Image Processing9, 105–116 (1979).
3.
MuellerR. K.KavehM.WadeG., Reconstructive tomography and applications to ultrasound, Proc. IEEE, 67, 567–587 (1979).
4.
ColemanB. D.NollW., Formulations of linear viscoelasticity, Rev. Mod. Phys., 33, 239–249 (1961).
