Quasi 3-D Quantitative Computerized Tomography for Reconstructing Sound Velocity Slices of a Weakly Scattering Object

概要

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To obtain a quantitative sound velocity image using the technique of ultrasonic diffraction tomography, 3-D treatment is necessary. However, the amounts of data acquired and hardware resources used increase markedly when the conventional 3-D technique is applied. Furthermore, it is difficult to observe the waves over the full-aperture region around the 3-D object. In this paper, a quasi 3-D technique was proposed to reconstruct sound velocity slices of the object by transmitting and receiving acoustic waves over the cylindrical aperture around a single rotational axis. From the result of a simulation using the calculated scattered data from the spherical object, quantitative precision of the 3-D reconstructed sound velocity image was verified to satisfy the requirements for clinical applications.
社団法人応用物理学会の論文
1996-05-30