METHOD FOR EXAMINING AN OBJECT USING A TOMOGRAPHIC TECHNIQUE

摘要

For examining at least a portion of an object using penetration radiation, radiation is transmitted from an external source through the object in a plurality of coplanar rays, the attenuated transmitted radiation is detected after it has passed through the object, the projection data for said rays is determined, and said projection data is inverted to generate the distribution of the attenuation coefficient. The inverting step includes the Direct Fourier Inversion Method such that the projection data is padded and the Fourier coefficients are filtered.