| CPC A61B 5/0037 (2013.01) [A61B 5/055 (2013.01); A61B 6/488 (2013.01)] | 20 Claims |

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1. A system, comprising:
at least one storage device storing a set of instructions; and
at least one processor configured to communicate with the at least one storage device, wherein when executing the set of instructions, the at least one processor is directed to perform operations including:
obtaining a scout image of a subject;
determining location information of a reference structure of the subject based on the scout image;
determining an offset of the subject relative to a characteristic point of the apparatus according to the location information of the reference structure;
determining location information of a target structure of the subject based on the scout image;
determining an auxiliary offset of the subject relative to the characteristic point of the apparatus according to the location information of the target structure, wherein the auxiliary offset reflects an offset of the target structure relative to a scanning region; and
moving the subject to a target position based on the offset and the auxiliary offset.
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