1. A portable inspection system for generating an image representation of target objects using a radiation source, comprising: a mobile vehicle; a detector array physically attached to a movable boom having a proximal end and a distal end wherein said proximal end is physically attached to said vehicle; and at least one source of radiation wherein said radiation source is fixedly attached to said distal end of said boom, wherein said image is generated by introducing the target objects in between the radiation source and the detector array, exposing said objects to radiation, and detecting radiation.