Nonlinear Image Reconstruction from Ultrasonic Time-of-Flight Projections
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.
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