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摘要: There are many tasks in radiology departments which involve assessment of image quality. Equipment purchasing is partly based on performance specifications, acceptance testing verifies that the system fulfils specified criteria, constancy attempts to notice any changes imaging system, clinical concentrates fulfilment needs, and optimisation processes attempt find best ways use for purposes. These different performed by methods outcome often referred as technical (or physical) quality or quality, according method used. Although establishing link between physical measures utility has been pursued decades, relationship results measurements, phantom evaluations not fully understood. This report shortly discusses various methods, points out factors may influence interpretation their results, reviews recent studies have explored relationships them.