A system comprising: a nuclear imaging scanner; a computed tomography scanner to acquire computed tomography scan data (310, 505, 605, 705) of the body, a processing system adapted to: register the computed tomography scan data (310, 505, 605, 705) against previously-acquired computed tomography scan data (310, 505, 605, 705) of the body to determine a registration transformation; apply the registration transformation to previously-acquired nuclear imaging scan data (110, 320, 510, 610, 710) of the body to generate transformed nuclear imaging scan data of the body, the previously-acquired nuclear imaging scan data (110, 320, 510, 610, 710) being temporally and spatially associated with the previously-acquired computed tomography scan data (310, 505, 605, 705); and apply the registration transformation to the previously-acquired computed tomography scan data (310, 505, 605, 705) of the body to generate transformed computed tomography scan data of the body; identify locations of one or more internal volumes of a body based on the transformed nuclear imaging scan data of the body, each of the identified one or more locations associated with radioactivity greater than a threshold level; determining a degree of interest associated with each of the one or more internal volumes based at least in part on the associated radioactivity, the transformed computed tomography scan data and the one or more locations; determine a scanning speed associated with each of a plurality of scanning coordinates, based at least in part on the locations of the one or more internal volumes and the degree of interest associated with each of the one or more of the internal volumes; and control the nuclear imaging scanner to scan the body based on the plurality of scanning speeds and associated scanning coordinates. a nuclear imaging scanner; a computed tomography scanner to acquire computed tomography scan data (310, 505, 605, 705) of the body, a processing system adapted to: register the computed tomography scan data (310, 505, 605, 705) against previously-acquired computed tomography scan data (310, 505, 605, 705) of the body to determine a registration transformation; apply the registration transformation to previously-acquired nuclear imaging scan data (110, 320, 510, 610, 710) of the body to generate transformed nuclear imaging scan data of the body, the previously-acquired nuclear imaging scan data (110, 320, 510, 610, 710) being temporally and spatially associated with the previously-acquired computed tomography scan data (310, 505, 605, 705); and apply the registration transformation to the previously-acquired computed tomography scan data (310, 505, 605, 705) of the body to generate transformed computed tomography scan data of the body; identify locations of one or more internal volumes of a body based on the transformed nuclear imaging scan data of the body, each of the identified one or more locations associated with radioactivity greater than a threshold level; determining a degree of interest associated with each of the one or more internal volumes based at least in part on the associated radioactivity, the transformed computed tomography scan data and the one or more locations; determine a scanning speed associated with each of a plurality of scanning coordinates, based at least in part on the locations of the one or more internal volumes and the degree of interest associated with each of the one or more of the internal volumes; and control the nuclear imaging scanner to scan the body based on the plurality of scanning speeds and associated scanning coordinates. register the computed tomography scan data (310, 505, 605, 705) against previously-acquired computed tomography scan data (310, 505, 605, 705) of the body to determine a registration transformation; apply the registration transformation to previously-acquired nuclear imaging scan data (110, 320, 510, 610, 710) of the body to generate transformed nuclear imaging scan data of the body, the previously-acquired nuclear imaging scan data (110, 320, 510, 610, 710) being temporally and spatially associated with the previously-acquired computed tomography scan data (310, 505, 605, 705); and apply the registration transformation to the previously-acquired computed tomography scan data (310, 505, 605, 705) of the body to generate transformed computed tomography scan data of the body; identify locations of one or more internal volumes of a body based on the transformed nuclear imaging scan data of the body, each of the identified one or more locations associated with radioactivity greater than a threshold level; determining a degree of interest associated with each of the one or more internal volumes based at least in part on the associated radioactivity, the transformed computed tomography scan data and the one or more locations; determine a scanning speed associated with each of a plurality of scanning coordinates, based at least in part on the locations of the one or more internal volumes and the degree of interest associated with each of the one or more of the internal volumes; and control the nuclear imaging scanner to scan the body based on the plurality of scanning speeds and associated scanning coordinates.