Prospective, non-interventional, multi-center study. The observation period for each subject covers the treatment period with Gadovist®. For each patient, the treating physician or nurse documents demographics, medical data, safety parameters and treatment signs and symptoms at the visit. Patients with severe renal impairment will be followed-up after 3 month by phone call from the investigator if in line with routine practice. Data audit/monitoring by source data verification will be done in a subset of sites and patients