A system, comprising: a gantry that is adapted to completely annularly encompass at least a portion of the subject; a source positioned within and movable relative to the gantry, the source configured to (i) receive a source output signal (116, 138), and (ii) emit at least one pulse of x-rays; a detector positioned within and movable relative to the gantry and the source wherein the detector is configured to detect the at least one pulse of x-rays emitted by the source and to produce detector data for said at least one pulse; a detector control module configured to receive the detector data and to output the detector data to an image control module included in an image acquisition control module; characterised in that the image acquisition control module is configured to (i) determine whether the source is to provide an output with two pulses for a dual energy output or a single energy output (ii) set the source output signal for the source based on the determination, (iii) receive the detector data, and (iv) reconstruct an image based on the detector data; wherein the source is configured to, in response to the source output signal indicating for the source to provide the output with the two pulses for the dual energy output, emit from the source a first pulse and a second pulse, or in response to the signal indicating for the source to provide the single energy output, emit from the source a third pulse for a single energy output. a gantry that is adapted to completely annularly encompass at least a portion of the subject; a source positioned within and movable relative to the gantry, the source configured to (i) receive a source output signal (116, 138), and (ii) emit at least one pulse of x-rays; a detector positioned within and movable relative to the gantry and the source wherein the detector is configured to detect the at least one pulse of x-rays emitted by the source and to produce detector data for said at least one pulse; a detector control module configured to receive the detector data and to output the detector data to an image control module included in an image acquisition control module; characterised in that the image acquisition control module is configured to (i) determine whether the source is to provide an output with two pulses for a dual energy output or a single energy output (ii) set the source output signal for the source based on the determination, (iii) receive the detector data, and (iv) reconstruct an image based on the detector data; wherein the source is configured to, in response to the source output signal indicating for the source to provide the output with the two pulses for the dual energy output, emit from the source a first pulse and a second pulse, or in response to the signal indicating for the source to provide the single energy output, emit from the source a third pulse for a single energy output. in response to the source output signal indicating for the source to provide the output with the two pulses for the dual energy output, emit from the source a first pulse and a second pulse, or in response to the signal indicating for the source to provide the single energy output, emit from the source a third pulse for a single energy output.