| 主权项 |
1. A medical imaging apparatus, comprising:
an image constructing unit, executed by a processor, that acquires volume image data composed plural number of cross-section region image data of a diagnosing object obtained on the plural number of cross sections perpendicular to a line passing through the cross-section region images, and that constructs a three-dimensional images of a diagnosing target inside of the diagnosing object as seen from a set viewing point using the volume image data; a display that displays the cross-section region images of the diagnosing object or the three dimensional image of the diagnosing target; an input unit, executed by a processor, that inputs parameters, including parameters that set up a precutting plane at an inter-voxel image data boundary between the voxel image data closer to the set viewing point than the voxel image data associated with the diagnosing target of the diagnosing object and the voxel image data associated with the diagnosing target of the diagnosing object, using the cross-section region images of the diagnosing object displayed on the display; and a controller that controls the configuration of the three dimensional image constructed by the image constructing unit on the basis of the precutting plane set via the input unit, wherein the controller extracts the inter-voxel image data boundary between the voxel image data based on a threshold value included in the parameters, resets the precutting plane using the extracted boundary, and controls the image constructing unit to re-construct the three dimensional image of the diagnosing target based on the basis of the reset precutting plane, wherein the controller comprises: a region discrimination unit, executed by a processor, that discriminates the three-dimensional region of the three-dimensional image consisting of voxels associated with the diagnosing target, based on the voxel image data within a predetermined voxel image data, and a region division unit, executed by a processor, that divides the volume image data into plural number of three-dimensional regions based on the voxel values of the plural number of voxels, wherein, the region discrimination unit discriminates, based on the voxel values of the respective volume image data divided by the region division unit, the three-dimensional region associated with the diagnosing target and a three-dimensional region adjacent the diagnosing target, wherein the image constructing unit constructs: a cross sectional image taken on an arbitrary cross section of plural number of three-dimensional regions and indicates the plural number of three-dimensional regions, and an overall three-dimensional image of the multiple three-dimensional regions, based on the volume image data divided by the region division unit, and wherein the image constructing unit comprises a precutting plane setting screen construction unit, executed by a processor, that constructs a precutting plane setting screen where a boundary line or plane of the divided three-dimensional regions and a precutting line or plane set by the input unit were superposed on the cross-sectional image and displays the screen on the display, wherein the image constructing unit further constructs, and displays on the precutting plane setting screen in different display modes, a three-dimensional region to be deleted and a three dimensional region to be left undeleted, wherein, upon designating a three-dimensional region in contact with or adjacent to the precutting plane or line displayed on the precutting plane setting screen via the input unit, the precutting plane setting screen constructing unit moves the precutting plane in contact with the three-dimensional region towards, or away from, the viewing point, and wherein the precutting plane setting screen constructing unit selects a three-dimensional region in contact with the precutting plane on one side of the precutting plane closer to the viewing point as a candidate region to be left undeleted, and selects a three-dimensional region in contact with the precutting plane on the other side of the precutting plane with respect to the viewing point as the candidate region to be deleted, and displays these candidate regions in distinguishable display modes using different marks, colors, or representations. |
