Stolt migration based iterative trace reconstruction
- Neer, P.L.M.J. van
- Vos, H.J.
- Volker, A.F.W.
DOIAbstract
Proper spatial sampling is critical for high quality imaging. If the sampling criterion is not met, grating lobe artifacts appear in the image. In non-destructive testing applications efficiency is being increased by the steady enlargement of the field of view, resulting in more elements and thus a higher transducer complexity and cost. In the volume scanning methods used in medical applications, the challenge lies in connecting the 2500+ elements of a matrix array to <256 channels. Usually pre-beamforming is used to reduce the data at the cost of image quality. An alternative is to reconstruct the nonaliased data from spatially aliased data. Last year we reported a reconstruction method based on wave field extrapolation, which performs bes...
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