Digital radiography is important means for inspecting the quality of subject, original X-ray image is however often rotary or offset.
射线数字成像检测是质量检测的一种重要方法，获取的射线图像往往会发生偏移或旋转。
Objective the purpose of this study was to investigate the performance of direct digital radiography, with and without image processing, for the detection of periapical lesions.
目的研究直接数字化影像技术诊断根尖周微小病损的能力以及图像处理技术对诊断结果的影响。
Conclusion Direct digital radiography is a promising technique in the detection of periapical lesions. Image processing could improve the diagnostic performance of digital images.
结论直接数字化影像技术具有良好的诊断根尖周微小病损的能力，图像处理技术能够显著提高数字化牙片的诊断能力。
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