Extended field iterative reconstruction technique (EFIRT) for correlated noise removal

摘要

Computerized method and system for improving 3D reconstruction images involves applying the Extended Field Iterative Reconstruction Technique (EFIRT) to remove correlated noise, in addition to with COMET (constrained maximum relative entropy tomography) or other regularization techniques to eliminate uncorrelated noise, wherein the EFIRT is applied by performing a set of successive reconstructions on an extended field larger than a region of interest (ROI); and extracting and averaging the ROI from said set of successive reconstructions.

主权项

1. A computer implemented method for removing correlated noise by applying Extended Field Iterative Reconstruction Technique (EFIRT) in a three-dimensional (3D) tomographic reconstruction, said method comprising:
performing a set of successive tomographic reconstructions on an extended field larger than a region of interest (ROI); and extracting and averaging the ROI from said set of successive tomographic reconstructions, wherein the set of successive tomographic reconstructions is performed by increasing a volume of the extended field for each successive tomographic reconstruction.