Systems and methods for generating projection images

An imaging system, comprising:

• an imaging apparatus to acquire measurement data of an object;
• and
• a programmable processing unit having a central processing unit, communicatively coupled to a memory, wherein upon execution of processor-executable instructions, the programmable processing unit operates to:
• receive a three-dimensional array of voxels representing the object;
• select a subset of voxels from the array representing a region of interest (ROI) of the object, the subset of voxels representing a subset of one or more portions of a plurality of image slices of the object, the subset of voxels selected along a direction perpendicular to a view direction defined by the ROI;
• and
• form an image of the ROI by processing the subset of voxels.

A computer-implemented method comprising:

• rendering, on a display, a graphical user interface (GUI) window to display an image of an object;
• receiving, via one or more graphical user interface elements of the GUI, an identification of a region of interest in the object;
• in response to the identification of the region of interest, processing a subset of voxels from a three-dimensional array of voxels representing the object to form an image of the ROI, the subset of voxels representing one or more portions of a plurality of image slices of the object, the subset of voxels selected along a direction perpendicular to a view direction defined by the region of interest;
• rendering the image of the ROI in the GUI window;
• and
• receiving input via the GUI to manipulate the image of the ROI.