1. An imaging system, comprising: a radiation source that emits radiation that traverses an examination region; a controller that activates the radiation source to emit radiation and deactivates the radiation source to stop radiation emission, wherein the controller selectively activates the radiation source to emit radiation at one or more pre-determined angles; a detector array, located across from the radiation source opposite the examination region, that detects radiation that traverses the examination region and generates a signal indicative thereof; and a reconstructor that reconstructs the signal to generate image data used to create one or more radiographic images corresponding to the one or more pre-determined angles.