Conventional ultrasound techniques use beam-formed, constant sound speed ray models for fast image reconstruction.
However, these techniques are inadequate for the emerging new field of ultrasound tomography (UST). We
present a new technique for the reconstruction of reflection images from UST data. We have extended the planar Kirchhoff
migration method used in geophysics, and combined it with sound speed and attenuation data obtained from the
transmission signals to create reflection ultrasound images that are corrected for refractive and attenuative effects. The
resulting technique was applied to in-vivo breast data obtained with an experimental prototype. The results indicate that
sound speed and attenuation corrections lead to considerable improvements in image quality, particularly in dense tissues
where the refractive and scattering effects are the greatest.
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