A base body of a computed tomography drum is disclosed. In an embodiment, the base body includes at least the following components: a base plate, an outer ring and an inner ring. The inner ring is arranged concentrically with the outer ring. The outer ring and the inner ring are arranged on the base plate. At least two of the components are configured as separately producible components. Two of the separately producible components are connected to one another by way of at least one of: bonding, welding, riveting, clinching, clinch-bonding and/or rivet-bonding.