  The artifacts in the magnetic structures reconstructed from Lorentz
transmission electron microscopy (LTEM) images with TIE method have been
analyzed in detail. The processing for the simulated images of Bloch and Neel
spirals indicated that the improper parameters in TIE may overestimate the high
frequency information and induce some false features in the retrieved images.
The specimen tilting will further complicate the analysis of the images because
the LTEM image contrast is not the result of the magnetization distribution
within the specimen but the integral projection pattern of the magnetic
induction filling the entire space including the specimen.
