Image reconstructions in diffraction tomography from limited transmitted field data sets

Diffraction tomography reconstructions of objects from Limited transmitted field data sets are discussed together with theoretical analyses and result s of numerical experiments. It is shown that Limited data sets, representin g only a small part of the complete data sets, can be used for reconstructi ons in diffraction tomography with satisfactory accuracy. We also find that , in diffraction tomography based on the hybrid filtered backpropagation an d the first-Rytov approximation, the use of limited data sets can provide a larger range of validity than the use of complete data sets, the reason be ing that Limited data sets pose less-severe phase-unwrapping problems. (C) 2000 Optical Society of America. OCIS codes: 050.1940, 070.6020, 100.6950.