Abstract: A medical image processing apparatus includes processing circuitry and a display. The processing circuitry acquires object volume data including a bone fracture region acquired from a subject and target volume data acquired based on a healthy bone region corresponding to the bone fracture region. The processing circuitry extracts a plurality of fragment regions from the object volume data. The processing circuitry arranges the plurality of extracted fragment regions in the object volume data based on shapes of the plurality of fragment regions and a shape of a bone region included in the target volume data. The display displays an image based on the object volume data in which the fragment regions are arranged.

Abstract: A medical image processing apparatus includes processing circuitry and a display. The processing circuitry acquires object volume data including a bone fracture region acquired from a subject and target volume data acquired based on a healthy bone region corresponding to the bone fracture region. The processing circuitry extracts a plurality of fragment regions from the object volume data. The processing circuitry arranges the plurality of extracted fragment regions in the object volume data based on shapes of the plurality of fragment regions and a shape of a bone region included in the target volume data. The display displays an image based on the object volume data in which the fragment regions are arranged.

Abstract: A medical image diagnostic apparatus according to an embodiment includes a setting unit, a rendering unit, and a display controller. The setting unit sets a viewpoint position and a calculation terminal position different from the viewpoint position on an image of a subject. The rendering unit performs rendering processing on, as a target, a range ahead of the calculation terminal position in a direction toward the calculation terminal position from the viewpoint position based on volume data of the subject so as to generate a rendering image. The display controller causes the rendering image to be displayed on a display unit.

Abstract: A medical image diagnostic apparatus according to an embodiment includes a setting unit, a rendering unit, and a display controller. The setting unit sets a viewpoint position and a calculation terminal position different from the viewpoint position on an image of a subject. The rendering unit performs rendering processing on, as a target, a range ahead of the calculation terminal position in a direction toward the calculation terminal position from the viewpoint position based on volume data of the subject so as to generate a rendering image. The display controller causes the rendering image to be displayed on a display unit.

Abstract: A method of navigating along a biological object with a lumen represented by a three-dimensional volume data set comprises generating a plurality of navigation segments connectable in a sequence, each segment having a start point within the lumen, a direction and a length. The navigation may be used for a camera in a virtual endoscopic examination, for example. The direction of each segment is determined by casting groups of rays outwards from the start point of the segment to the object wall, and calculating an average ray length for each group. The group having the largest average ray length is selected, and the axial direction of this group is used as the direction for the segment. The average ray lengths of the groups may be weighted using the direction of the previous segments to bias the navigation generally forward, or may be weighted using a view direction of the camera to allow a user to turn the camera into a chosen branch in the object.

Abstract: An apparatus for rendering a two dimensional polygon image from volume data defining a volume and plane data defining a two dimensional plane which intersects the volume. The apparatus comprises a graphics processing unit (GPU). The apparatus is operable to generate triangle data comprising an indirect representation of each triangle of a set of candidate triangles. For a given plane/volume interaction a subset of the candidate triangles are valid triangles which are within the volume and on the given plane and the remaining triangles are invalid triangles. The GPU is operable to process the indirect representation of each triangle of the set of candidate triangles to output for a valid triangle for the defined plane a direct representation of the valid triangle and to output for an invalid triangle for the defined plane a direct representation of a degenerate triangle. The GPU is operable to reject each direct representation of a degenerate triangle from further processing.

Abstract: A method of navigating along a biological object with a lumen represented by a three-dimensional volume data set comprises generating a plurality of navigation segments connectable in a sequence, each segment having a start point within the lumen, a direction and a length. The navigation may be used for a camera in a virtual endoscopic examination, for example. The direction of each segment is determined by casting groups of rays outwards from the start point of the segment to the object wall, and calculating an average ray length for each group. The group having the largest average ray length is selected, and the axial direction of this group is used as the direction for the segment. The average ray lengths of the groups may be weighted using the direction of the previous segments to bias the navigation generally forward, or may be weighted using a view direction of the camera to allow a user to turn the camera into a chosen branch in the object.

Abstract: An apparatus for rendering a two dimensional polygon image from volume data defining a volume and plane data defining a two dimensional plane which intersects the volume. The apparatus comprises a graphics processing unit (GPU). The apparatus is operable to generate triangle data comprising an indirect representation of each triangle of a set of candidate triangles. For a given plane/volume interaction a subset of the candidate triangles are valid triangles which are within the volume and on the given plane and the remaining triangles are invalid triangles. The GPU is operable to process the indirect representation of each triangle of the set of candidate triangles to output for a valid triangle for the defined plane a direct representation of the valid triangle and to output for an invalid triangle for the defined plane a direct representation of a degenerate triangle. The GPU is operable to reject each direct representation of a degenerate triangle from further processing.