数字X线摄影在放射科应用优势的探讨  

The advantages of digital radiography in department of radiology

作　　者：毛丽娟[1] 罗小梅[1] 吴腾芳[1] 

机构地区：[1]中山大学附属第一医院放射科,广州510080

出　　处：《影像诊断与介入放射学》2009年第6期318-319,共2页Diagnostic Imaging & Interventional Radiology

摘　　要：目的将数字X线摄影(Digital Radiography,DR)与普通X线摄影进行比较,探讨DR在放射科应用的优势。方法采用线对测试板分别测量DR和普通X线片的空间分辨率,并通过对1000例DR和1000例普通X线摄取的正位胸片中,在图像质量、照射剂量、废片率方面进行对比,分析DR系统的优势。结果与普通X线摄影相比,DR具有高灵敏度、高DQE(量子检测效率)、高空间分辨率的特点;它的采集速度快,X线转换效率快,后处理功能强大,病变检出率高。结论 DR在各方面明显优于普通X线摄影,具有广阔的应用前景。Objective To investigate the advantages of digital radiography in department of radiolgy by comparing digital radiography with common radiography. Methods Test card was used for testing the spatial resolution of DR and common radiography. 1000 films of chest by DR and 1000 films of chest by common radiography were compared in image quality, dose of radiation, the rate of waste film, and the advantages of DR was analyzed. Results Compared to common radiography, DR had a high sensitivity, high DQE （quantum detection efficiency）, high spatial resolution and density resolution. The speed of acquisition and X-ray conversion efficiency were fast. The function of post-processing was strong and the rate of disease detection was high. Conclusion DR is better than common radiography in all respects, it will be widely applied.

关 键 词：数字X线摄影 普通X线摄影 量子检测效率 空间分辨率 密度分辨率 

分 类 号：R814.42[医药卫生—影像医学与核医学]