| 摘要 |
<p>Summarizing, the invention relates to a Method for generating at least two- dimensional tomographic image data of an object from a sinogram of the object, the method having the steps: - providing a sinogram s of an object, the object having an attenuation distribution map f(u, v); generating the attenuation distribution map f(u, v) of the object by minimizing the quadratic equation: F(f) = 1/2 f<SUP>T</SUP>Af - b<SUP>T</SUP>f using an iterative method, wherein A:= H<SUP>T</SUP>H and b:= H<SUP>T</SUP>s and wherein H is the projection matrix of the attenuation distribution map f(u, v) onto the sinogram s and H<SUP>T</SUP> is the backprojection matrix of the sinogram s onto the attenuation distribution map f(u, v) of the object; - deducing the at least two-dimensional tomographic image data from the attenuation distribution map, an apparatus and a computer program product.</p> |
