HIGH-EFFICIENCY COMPUTER TOMOGRAPHY

A system includes transmitters to transmit an excitation energy into an object under observation; detectors to generate projection space data encoding energy received in response to the transmitted excitation energy into the object; a controller to control the transmitters to transmit the excitation energy and the detectors to generate the projection space data; an image reconstructor to receive the projection space data and to process the projection space data by: computing a first quantity characterizing a difference between the projection space data and predicted projection data; computing a second quantity corresponding to at least one impulse response, each impulse response corresponding to a reference voxel of unit-intensity; computing an update value using the first quantity and an inverted function of the second quantity; and reconstructing an object space image representing the object under observation using the update value.