Abstract

目的 探讨直接数字化X线摄影( direct digitized radiography, DDR)在腰椎侧位影像中的应用价值.方法 随机抽取81例患者的DDR腰椎侧位影像,使用图像后处理方法中多级图像对比增益法,又称交响乐功能(multi-scale image contrast amplification, MUSICA)进行后处理,同时取另81例患者进行普通X线摄影,由放射科经验丰富的医生、技师各2名对所有的腰椎侧位影像进行分析,采用常规影像质量评价指标评价两组的影像质量.结果 (1)DDR腰椎侧位影像质量影像评分为13.00,普通X线影像评分为8.96,经非参数检验的配对符号秩和检验,依赖负秩计算的统计量(Z=-7.88,P<0.01),两组差异有统计学意义,DDR腰椎侧位组明显优于普通平片组;(2)81例中DDR腰椎图像显示满意率为92.6%(75/81), 普通X线平片显示满意率为61.7%(50/81) ,两者差异有统计学意义(χ2 = 21.89, P<0.01). 结论 与普通X线影像相比,DDR影像能更好的显示下部腰椎椎体、附件及周围软组织,可获得良好的图像,有利于放射诊断工作。

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