The invention relates to a magnetic resonance imaging data processing system (100). The magnetic resonance imaging data processing system (100) is configured to receive first magnetic resonance imaging data (170) acquired by a first magnetic resonance imaging system (200) and having a first set of imaging characteristics. A post-processing filtering operation is applied to the first magnetic resonance imaging data (172) generating emulated magnetic resonance imaging data (176) having a set of emulated imaging characteristics. The emulated set of imaging characteristics mimics a second set of imaging characteristics (174) of second magnetic resonance imaging data (172) acquired by a second magnetic resonance imaging system (306) different from the first magnetic resonance system. (200) The emulated magnetic resonance imaging data (176) is provided for a comparison with the second magnetic resonance imaging data (172).