Nonlinear Image Reconstruction from Ultrasonic Time-of-Flight Projections

  • Hermann Schomberg
Part of the Acoustical Imaging book series (ACIM, volume 10)


This paper is concerned with reconstructive ultrasound tomography. More specifically, it deals with that variation of reconstructive ultrasound tomography which is based on time-of-flight projections and produces images which represent the acoustic refractive index. The method has been studied since a while; see Mueller et al. (1979) for a review. The main application envisaged is breast imaging, but still the images obtained with this method do not show the details required for a medical application. We shall expound that this is mainly due to shortcomings in the mathematical model employed. Then we derive a more appropriate model and a pertinent reconstruction algorithm. The efficiency of both is demonstrated using real data obtained with a phantom. We start with a short description of the underlying experiment.


Model Error Discrete Version Conventional Model True Image Nonlinear Image 
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Copyright information

© Plenum Press, New York 1982

Authors and Affiliations

  • Hermann Schomberg
    • 1
  1. 1.Forschungslaboratorium HamburgPhilips GmbHHamburg 54Germany

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