Systems and methods for imaging and determining a signature of an object

摘要

An X-ray CT scanner for imaging an object is provided. The scanner includes an X-ray emitter configured to emit X-ray beams, a detector array including a plurality of detector elements, and a precollimator positioned between the X-ray emitter and the object, the precollimator configured to prevent the emitted X-ray beams from being directly incident on a first subset of the plurality of detector elements, and allow the emitted X-ray beams to be directly incident on a second subset of said plurality of detector elements. A processing device communicatively coupled to the detector array is configured to determine a signature of the object based on a first set of data acquired using the first subset of the plurality of detector elements, and tomographically reconstruct an image of the object based on a second set of data acquired using the second subset of said plurality of detector elements.

主权项

1. An X-ray CT scanner for imaging an object, said X-ray CT scanner comprising:
an X-ray emitter configured to emit X-ray beams towards the object; a detector array positioned opposite said X-ray emitter and comprising a plurality of detector elements; a precollimator positioned between said X-ray emitter and the object, said precollimator configured to:
prevent, using at least one blocking portion, the emitted X-ray beams from being directly incident on a first subset of said plurality of detector elements; andallow the emitted X-ray beams to be directly incident on a second subset of said plurality of detector elements; and a processing device communicatively coupled to said detector array, said processing device configured to:
determine a signature of the object based on a first set of data acquired using said first subset of said plurality of detector elements; andtomographically reconstruct an image of the object based on a second set of data acquired using said second subset of said plurality of detector elements.