Tomography system comprising: - a first beam source-detector pair for capturing a series of first projection image data sets containing first pixel values from a first projection angle; - a second beam source-detector pair for capturing a series of second projection image data sets containing second pixel values from a second projection angle, wherein the two projection angles (W1, W2) are different from each other; and wherein - the tomography system is prepared for capturing the series (A1, A2) of first and second projection image data sets during a synchronous and rotation-angle-offset revolution or partial revolution of the two beam source-detector pairs (QD1, QD2), wherein it is applicable to both beam source-detector pairs (QD1, QD2) that the respective detector (D1, D2) revolves in a plane of rotation (RE1, RE2) which is spaced apart at a distance from the plane of rotation (RE1, RE2) in which the beam source (Q1, Q2) that is assigned to the detector (D1, D2) revolves, wherein a respective central beam of the respective beam source (Q1, Q2) is oriented towards the respective detector (D1, D2) assigned thereto of the respective beam source-detector pair (QD1, QD2); and - a volume image production system for producing a series of volume images of a vascular system taking into account first confidence values as a weight of the first pixel values and/or taking into account second confidence values as a weight of the second pixel values, wherein the confidence value (VW1, VW2) of a pixel value (PW1, PW2) is dependent in each case on a pixel-specific traversing length that a projection beam (PS1, PS2) traverses through parts (Gi) of the vascular system on a path from the first or second beam source to a pixel-specific sensor element of the associated first or second detector and wherein the confidence value (VW1, VW2) is greater, the fewer parts (Gi) of the vascular system have been traversed by the respective projection beam (PS1, PS2). - a first beam source-detector pair for capturing a series of first projection image data sets containing first pixel values from a first projection angle; - a second beam source-detector pair for capturing a series of second projection image data sets containing second pixel values from a second projection angle, wherein the two projection angles (W1, W2) are different from each other; and wherein - the tomography system is prepared for capturing the series (A1, A2) of first and second projection image data sets during a synchronous and rotation-angle-offset revolution or partial revolution of the two beam source-detector pairs (QD1, QD2), wherein it is applicable to both beam source-detector pairs (QD1, QD2) that the respective detector (D1, D2) revolves in a plane of rotation (RE1, RE2) which is spaced apart at a distance from the plane of rotation (RE1, RE2) in which the beam source (Q1, Q2) that is assigned to the detector (D1, D2) revolves, wherein a respective central beam of the respective beam source (Q1, Q2) is oriented towards the respective detector (D1, D2) assigned thereto of the respective beam source-detector pair (QD1, QD2); and - a volume image production system for producing a series of volume images of a vascular system taking into account first confidence values as a weight of the first pixel values and/or taking into account second confidence values as a weight of the second pixel values, wherein the confidence value (VW1, VW2) of a pixel value (PW1, PW2) is dependent in each case on a pixel-specific traversing length that a projection beam (PS1, PS2) traverses through parts (Gi) of the vascular system on a path from the first or second beam source to a pixel-specific sensor element of the associated first or second detector and wherein the confidence value (VW1, VW2) is greater, the fewer parts (Gi) of the vascular system have been traversed by the respective projection beam (PS1, PS2).