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[Comparison between phantoms for quality control in xeromammography].

An indicator of operating technique (phantom) is very useful for quality control in diagnostic radiology. We tested experimentally that the "Random Phantom" is the most suitable between those commercially available for xeromammography. In fact this indicator points out image quality alterations caused even by very small variations of the physical parameters affecting image quality. We did not test the phantoms for mammographic technique but we believe that the "Random" is the most suitable in this field too.