Inverse scattering image reconstruction from reflection and transmission data observation with fixed transmitter/receiver pair transducer

The inverse scattering imaging method based on reflection and transmission observation data, which was previously developed by the present author, is anticipated for its practical advantage in which the necessary range of obs ervation view can be reduced to hair compared to the conventional full obse rvation view. In this report, we propose a modified method, which involves data observation carried out while rotating an object under the fixed condi tion of a transmitter/receiver pair, and a reflector. The inverse scatterin g reconstruction procedure is developed by applying the mirror-image theory . A special feature of the present method which is stressed is its superior ity for the limitation of the observation view range much smaller than 180 deg. The validity of the method is tested using simulation and experimental data from the triangular specimen. It is shown that the quantitative preci sion of the reconstructed sound speed images is fairly good even when the l imited viewing range is less than 120 deg.