US Patent 11832897 Method and system for surgical navigation

A surgical navigation method includes selecting one or more two-dimensional images from a three-dimensional image. The method further includes adjusting a portion of the two-dimensional images along a viewing direction. The method also includes superimposing the portion of the two-dimensional images along the viewing direction to form a two-dimensional superimposed image. The method further incudes guiding movement of a virtual surgical instrument into the two-dimensional superimposed image.