位相对比乳腺摄影与全数字化乳腺摄影影像质量的比较研究  

The comparative research of the image quality between the phase-contrast mammography and full-fieid digital mammography

作　　者：丁建辉 彭卫军[1,2] 蒋朝霞 郑晓静[1,2] 胡丹婷 

机构地区：[1]上海复旦大学附属肿瘤医院放射诊断科 [2]复旦大学上海医学院肿瘤学系,200032

出　　处：《上海医学影像》2011年第1期5-8,共4页Shanghai Medical Imaging

摘　　要：目的探讨和比较位相对比乳腺摄影(Phase-contrast Mammography,PCM)与全数字化乳腺摄影(Full Field Digital Mammography,FFDM)的影像质量。方法选用ACR RMI-156模型,分别于PCM乳腺摄影机与FFDM乳腺摄影机拍摄,除自动曝光条件,其余选用的曝光条件两台机器相同。拍摄好的模型图像打印成胶片,由三位放射科医师进行独立评价,以评分的方法(以观察到的模型内部细微结构为依据),比较PCM与FFDM有无差异,统计方法为配对t检验和单因素方差分析,统计软件为Stata 7.0。结果在选择的曝光条件中,每一位医师对模型的评分PCM组与FFDM组接近,差异无统计学意义(P>0.05),三位医师之间评分,无论对PCM组还是FFDM组,差异无统计学意义(P>0.05)。两组的评分已超过ACR规定的较好乳腺摄影系统的评分标准(10分)。结论 PCM与FFDM在显示RMI-156模型模拟钙化点簇数、纤维条数、模拟肿块的能力方面相当(评分接近),两种乳腺X线摄影均具较高的影像质量。Objective To investigate and compare the image quality of phase-contrast mammography and full-field digital mammography.Methods ACR RMI-156 phantom was selected and were exposured at PCM and FFDM.The exposured condition was the same in two groups except in automaticexposure.Three radiologisits evaluate the phantom X-ray images which were printed to film respectively.The method of evaluating RMI-156 was scoring（according to minute structure inside phantom）.Compare the difference of scoring between the PCM and FFDM.The method was test using paried t test and one way ANOVA.Statistic software was Stata 7.0.Results In all three exposured conditions,the scoring of every radiologist between two groups was approximate,there were no statistically diffenrence between PCM and FFDM（P0.05）.No matter which group there were no statistically diffenrence among three radiologists（P0.05）.The scoring of two groups surpass the accepted criterion（10 score） of ACR.Conclusion The capability of displaying simulated calcification,fiber and simulated mass which inside the RMI-156 phantom is the same between PCM and FFDM.Two mammography all have the higher image quality.

关 键 词：位相对比 乳房X线摄影术 图像处理 计算机辅助 模型 影像质量 

分 类 号：R737.9[医药卫生—肿瘤]