数字化减影X线摄影术检测牙槽骨中的小病变
Detection of small lesions in alveolar bone by digital subtraction radiography.
作者信息
Ying S Y, Chen X, Zhang G, Cao C F
机构信息
Department of Periodontology, School of Stomatology, Beijing Medical University (BMU), P. R. China.
出版信息
Chin J Dent Res. 1999 May;2(2):19-22.
OBJECTIVE
To evaluate the effectiveness of digital subtraction radiography (DSR) system for diagnosis of small artificial alveolar bone lesions.
METHODS
Seventy-two 0.2-0.9 mm3 lesions were produced in premolar and molar areas of dry human mandibles. Reference and subsequent radiographs were taken before and after lesions were made. The small lesions were detected by conventional radiography and DSR respectively.
RESULTS
For 0.2-0.5 mm3 lesions, detection by both DSR and conventional methods was less than 50%. For 0.7 mm3 lesions, the detection by DSR and conventional methods was 57.5% and 38.7%, respectively (P < 0.01). For 0.9 mm3 lesions, the accuracy of the detection by DSR and conventional methods was 89.3% and 57.3% (P < 0.01).
CONCLUSION
The detectability of small alveolar bone lesions by DSR was superior to that of the conventional method.
目的
评估数字减影射线摄影（DSR）系统对小型人工牙槽骨病变的诊断效果。
方法
在干燥的人类下颌骨前磨牙和磨牙区域制造72个体积为0.2 - 0.9立方毫米的病变。在制造病变前后分别拍摄参考射线片和后续射线片。分别通过传统射线摄影和DSR检测小型病变。
结果
对于0.2 - 0.5立方毫米的病变，DSR和传统方法的检测率均低于50%。对于0.7立方毫米的病变，DSR和传统方法的检测率分别为57.5%和38.7%（P < 0.01）。对于0.9立方毫米的病变，DSR和传统方法的检测准确率分别为89.3%和57.3%（P < 0.01）。
结论
DSR对小型牙槽骨病变的可检测性优于传统方法。
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