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![]() | Christensen, Douglas A. | Ultrasound beam simulations in inhomogeneous tissue geometries using the hybrid angular spectrum method | The angular spectrum method is a fast, accurate and computationally efficient method for modeling wave propagation. However, the traditional angular spectrum method assumes that the region of propagation has homogenous properties. In this paper, the angular spectrum method is extended to calculate u... | 2012-01-01 |