| CPC A61B 6/4021 (2013.01) [A61B 6/48 (2013.01); A61B 6/582 (2013.01)] | 20 Claims |

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1. A scanning method, comprising:
obtaining plain film information of a target scanning object, and determining a target bed height based on the plain film information;
adjusting the plain film information based on the target bed height to obtain target plain film information; and
performing a subsequent operation based on the target plain film information.
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