An imaging system for acquiring multi-dimensional tomographic image data of an object, the imaging system having (1) a plurality of detectors to acquire image data, the detectors coupled to a supporting structure, wherein at least one of the detectors is adapted to move relative to the object during image data acquisition and wherein the detectors are adapted to rotate independently of each other, provided that image data from the detectors are collected concomitantly during a study time and (2) a data analyzer adapted to acquire and/or reconstruct the image data.