CPC A61B 6/5205 (2013.01) [A61B 6/032 (2013.01); G06T 11/006 (2013.01); G06T 11/008 (2013.01)] | 20 Claims |
1. A system, comprising:
at least one storage device including a set of instructions; and
at least one processor in communication with the at least one storage device, wherein when executing the instructions, the at least one processor is configured to cause the system to perform operations including:
obtaining projection data of an object, wherein the projection data is generated by a scanner via scanning the object which is located in a scanning region of the scanner;
generating, based on a first weighting function, a first image corresponding to the object by back-projecting the projection data, wherein the first image includes a first region corresponding to at least a part of the object;
generating, based on a second weighting function, a second image corresponding to the object by back-projecting the projection data, wherein the second image includes a second region corresponding to the at least part of the object, and the second region of the second image presenting a better CT number uniformity than the first region of the first image; and
generating a third image of the object based on the first image and the second image.
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