Patent ID: 8103487

Claim:
An iterative reconstruction method for reconstructing a reconstructed image object, the method comprising: providing an initial image object representing radiation from a patient; reconstructing, in a series of iteration steps by a processor, updated image objects, wherein each iteration step includes determining a data model from an input image object, the input image object of a first iteration being the initial image object and the input image objects of subsequent iterations being the updated image objects from previous iterations, and determining a stop-criterion of the data model on the basis of a chi-square-gamma statistic; determining that the stop-criterion of the data model has transitioned from being outside a limitation of a threshold value to being inside the limitation, the stop-criterion or the threshold being a function of a statistical value of the chi-square gamma statistic, the stop-criterion or the threshold varying by spatial location and being weighted toward a region of interest within the volume; ending the iterations; selecting one of the updated image objects to be the reconstructed image object; and displaying an image of the updated image object.