A method for operating a medical imaging apparatus includes acquiring an intensity distribution of an X-ray radiation by a first X-ray detector assigned to a first radiation source. A scattered radiation distribution of scattered radiation generated at the object is acquired by a second X-ray detector. A spatial distribution for the component of the scattered radiation is estimated based on the scattered radiation distribution acquired by the second X-ray detector. An intensity distribution of the component of the transmitted primary X-ray radiation is determined from the intensity distribution acquired by the first X-ray detector depending on the estimated spatial distribution.