Cutting simulation device and cutting simulation program

A cutting simulation device, comprising:

• a tomographic image information acquisition section configured to acquire tomographic image information;
• a memory connected to the tomographic image information acquisition section, configured to store voxel information about the tomographic image information;
• a volume rendering calculator connected to the memory, configured to sample voxel information in a direction perpendicular to the line of sight, on the basis of the voxel information;
• a display unit configured to display calculation results from the volume rendering calculator;
• an input section with which instructions for cutting a cutting object displayed on the display unit is inputted;
• and
• a display controller configured to display on the display unit the status of the cutting object after cutting on the basis of the cutting instructions inputted with the input section, and displaying non-cutting objects included inside the cutting object, on the display unit in a pre-cut state even after cutting, even when included in a cut portion according to the cutting instructions.