  Electron tomography has been studied in various fields. Various methods have
been developed to align projection sets to construct ideally focused
reconstruction. In this paper, we present how to align the projection set to
distinguish whether it has an ideal sinogram pattern or not by removing
translation errors and vertical tilt errors. We also analyze some important
properties for certain types of samples to identify whether the reconstruction
image can be made through an ideal sinogram pattern. We provide a guideline for
how to construct a better reconstruction image by scanning the sample through
these properties.
