METHODS AND SYSTEMS FOR ESTIMATING SCATTER

摘要

One example method for estimating scatter associated with a target object may include acquiring a set of original projection data that includes primary radiation and scattered radiation at one or more selected projection angles associated with the target object, generating a first set of estimated scatter data from the set of original projection data, generating reconstructed image data by performing a first pass reconstruction using the first set of estimated scatter data, and generating a set of reference scatter data associated with the target based on the reconstructed image data. The example method may also include generating a set of reference primary plus scatter data associated with the target object based on the reconstructed image data, generating a second set of estimated scatter data associated with the target object based on the set of reference primary plus scatter data, and generating perturbation data associated with the target object.

主权项

1. A method for estimating scatter associated with a target object, comprising:
acquiring, using a radiation source and a detector of an imaging system, a set of original projection data that includes primary radiation and scattered radiation at one or more selected projection angles associated with the target object; generating a first set of estimated scatter data from the set of original projection data using a scatter estimation algorithm; generating reconstructed image data by performing a first pass reconstruction using the first set of estimated scatter data; generating a set of reference scatter data associated with the target object at the one or more selected projection angles based on the reconstructed image data; generating a set of reference primary plus scatter data associated with the target object at the one or more selected projection angles based on the reconstructed image data; generating a second set of estimated scatter data associated with the target object based on the set of reference primary plus scatter data using the scatter estimation algorithm; and generating perturbation data associated with the target object by comparing the reference scatter data with the second set of estimated scatter data.