【摘要】 目的评价直接数字X线摄影(DR)在胸椎的应用,以及与传统胸椎摄影的对比。方法抽取我院DR胸椎摄影影像和传统胸椎摄影照片各89例,由3位副主任医师及2名主管技师对影像进行分析,用2种方法统计:①按照片质量分甲、乙、丙、废片;②以胸椎侧位分为上、中、下3段显示比例评定。根据2种方法综合评价。结果按照片质量评定:DR影像甲片率74.1%、乙级片率20.2%、丙级片率5.7%、废片率0%;传统照片甲片率45%、乙级片率41.6%、丙级片率11.2%、废片率2.2%;按部位显示评定:DR影像上段胸椎显示率87.6%、中段显示率100%、下段显示率76.4%;传统照片上段胸椎显示率15.3%、中段胸椎显示率75.3%、下段胸椎显示率51.7%。经统计学处理,差异有非常显著性意义(χ2=15.823P<0.001)结论DR胸椎摄影的诊断图像质量明显好于传统胸椎摄影,尤其是上段胸椎显示率明显提高。DR系统成像快捷,操作简单,有利于提高放射科工作效率,有利于放射影像诊断。更多还原

【Abstract】 Objective An evaluation of the application of DR in thoracic spine and a comparative study of the DR with the conventional radiography.Methods DR images and the conventional radiogram of 89 cases respectively were evaluated by 3 vice-consultant doctors and 2 chief technicians. Statistics was processed with 2 categories: ①images were classified into grade A, B, C and condemned according to the image quality; and ②thoracic spine are divided into upper, middle and lower portions, in which the rate of successful imaging were compared respectively. Results The image quality of DR: 74.1%images in grade A, 20.2%in grade B, 5.7%in grade C, and no image condemned. Conventional radiogram: 45%images in grade A, 41.6%in grade B, 11.2%in grade C, and 2.2%images condemned. The successful imaging rate in each portion: DR films 87.6%in upper thoracic spine, 100%in middle portion, and 76.4%in lower portion with DR. While the rate was 15.3%in upper portion, 75.3%in middle portion, and 51.7%in lower thoracic spine with conventional radiography. Conclusion In the imaging of the thoracic spine, DR has a superior image quality and success rate to the conventional radiography , especially in the upper thoracic spine. DR system is easy to manipulate, quick in obtaining image, increases the efficiency of the radiology department, and facilitates the image interpretation.更多还原