Let fbe a function on  and wbe a finite subset of  Discrete tomography reconstructs the function f from the data  This problem is proved by Hazama [3] to be described completely by the zero locus of a certain polynomial in n variable associated with w. The purpose of this paper is to apply his result to the case when the window w has the form Furthermore we describe the way how one can find the rational zero-sum arrays for w.

discrete tomography, rational arrays.