Patent ID: 8374410

Claim:
A medical image display device, comprising: a reference feature point extracting and pairing unit implemented by the medical image display device configured to extract reference feature points that are feature points identifying association between a first and a second three-dimensional medical images of a same subject and serving as references in registration individually from the first and the second three-dimensional medical images, and form a reference feature point pair in which extracted reference feature points are associated with each other, the reference feature points are major branching points of a trachea and bronchi and are fixed points for use in the registration; general feature point extracting unit implemented by the medical image display device configured to extract general feature points that are feature points possible to use in the registration individually from the first and the second three-dimensional medical images, the general feature points are branching points other than the major branching points and have a possibility to enter as the fixed points; a general feature point pairing unit implemented by the medical image display device configured to form a general feature point pair in which association is established between the first and the second three-dimensional medical images, from the general feature points extracted by the general feature point extracting unit, based on positional relationship with respect to the reference feature points extracted by the reference feature point extracting and pairing unit individually from the first and the second three-dimensional medical images; a coordinate transformation parameter determining unit implemented by the medical image display device configured to determine a coordinate transformation parameter that is to be used to perform the registration between the first and the second three-dimensional medical images, based on positional information of the reference feature point pair for which the association is established by the reference feature point extracting and pairing unit and the general feature point pair for which the association is established by the general feature point pairing unit, the coordinate transformation parameter is a parameter determined by using the reference feature points as fixed points and general feature points entered as the fixed points; a corresponding image creating unit implemented by the medical image display device configured to create corresponding images for the first and the second three-dimensional medical images, based on the coordinate transformation parameter determined by the coordinate transformation parameter determining unit; and a display controlling unit implemented by the medical image display device configured to perform control so that the corresponding images of the first and the second three-dimensional medical images created by the corresponding image creating unit are displayed on a predetermined displaying unit that displays images.