Title: Exploration of Exposure dose Optimization for Screen-film Mammography
Abstract: Objective:To study the exposure dose optimization for screen-film mammography.Methods:Phantoms with different thickness were exposed in mode of auto filter and auto time respectively.Scored the quality of the images acquired,and measured the exposure dose.Results:The difference of image qualities with the same thickness in different exposure conditions was not significant,the difference of image qualities with different thickness in the same exposure conditions was not significant either,it means the condition of AEC was normal.In different exposure conditions,the exposure dose was lower when using higher kV,all the exposure doses in mode of auto filter were not the lowest.Conclusion:We should make sure normal condition of automatic exposure control.Basing on the precondition of ensuring the image quality,it′s better to use auto time to increase kV and reduce exposure dose.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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