The geometric distortion due to the neglect of refraction in existing ultrasound scanners is demonstrated. An iterative technique to correct for refraction errors in B-mode ultrasound, denoted Second Order Refraction Transposition (SORT), is presented. In vitro experiments were performed that confirm the calculated results.
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JohnsonS.A.GreenleafJ.F.DuckF.A.ChuA.SamayoaW.R.GilbertB.K., Digital computer simulation study of a real-time collection, post processing synthetic focusing ultrasound cardiac camera, Acoustic Holography6, 193–209, (1975).
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CorlP.D.KinoK.S.DeSiletsC.S.GrantP.H., A digital synthetic focus acoustic imaging system, Acoustical Imaging8, 39–53, (1978).
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MesdagP.R.de VriesD.BerkhoutA.J., An approach to tissue characterization based on wave theory using a new velocity analysis technique, Acoustical Imaging.12, 479–491, (1982).
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MesdagP.R.BerkhoutA.J., Two dimensional analysis of synthetically focused images, Acoustical Imaging.13, 315–327, (1984).
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GoldbergMurmis, V., A model of ultrasound interaction with soft tissue and its use to correct imaging refraction errors, Ph.D. Dissertation, (Department of Materials Science and Engineering, University of Utah, 1986.)
