A method for controlling limited-area computer tomography imaging, comprising steps of supporting, by object positioning means, an object being imaged stationary, determining, by a control device (400, 520), location data of a first imaging object belonging to the object, the object having a symmetry plane and the step of determining location data comprising at least one of analysing an image of the object to determine the location data of the first imaging object in an imaging area, and estimating the location data of the first imaging object based on an external anatomic characteristic of the object, determining, by the control device, a first rotation axis of a first imaging area based on the location data of the first imaging object, the first imaging area including the first imaging object, the first rotation axis having a first distance from the symmetry plane, computer-tomography imaging, by an X-ray generator and an X-ray detector rotating around the first rotation axis, the first imaging area, determining, by the control device, reference location data related to the first imaging object based on measurement data related to the object, said reference location data describing said symmetry plane, determining, by the control device, a second rotation axis of a second imaging area based on the reference location data and a location of the first rotation axis, the second rotation axis having a second distance from the symmetry plane, the second distance being approximately equal to the first distance, and computer-tomography imaging by the X-ray generator and the X-ray detector rotating around the second rotation axis, the second imaging area, the second imaging area includes a second imaging object, which together with the first imaging object remain stationary during and between the steps of computer-tomography imaging the first and second imaging areas. supporting, by object positioning means, an object being imaged stationary, determining, by a control device (400, 520), location data of a first imaging object belonging to the object, the object having a symmetry plane and the step of determining location data comprising at least one of analysing an image of the object to determine the location data of the first imaging object in an imaging area, and estimating the location data of the first imaging object based on an external anatomic characteristic of the object, analysing an image of the object to determine the location data of the first imaging object in an imaging area, and estimating the location data of the first imaging object based on an external anatomic characteristic of the object, determining, by the control device, a first rotation axis of a first imaging area based on the location data of the first imaging object, the first imaging area including the first imaging object, the first rotation axis having a first distance from the symmetry plane, computer-tomography imaging, by an X-ray generator and an X-ray detector rotating around the first rotation axis, the first imaging area, determining, by the control device, reference location data related to the first imaging object based on measurement data related to the object, said reference location data describing said symmetry plane, determining, by the control device, a second rotation axis of a second imaging area based on the reference location data and a location of the first rotation axis, the second rotation axis having a second distance from the symmetry plane, the second distance being approximately equal to the first distance, and computer-tomography imaging by the X-ray generator and the X-ray detector rotating around the second rotation axis, the second imaging area, the second imaging area includes a second imaging object, which together with the first imaging object remain stationary during and between the steps of computer-tomography imaging the first and second imaging areas.