直接数字成像与传统成像对根尖周微小骨病损检测能力的对比研究  

Comparison of diagnostic sensitivity between conventional and direct digital radiography for small periapical bone lesion

作　　者：王丽君[1] 王春雨[1] 运新跃[1] 张文玉[1] 刘萍[1] 赵梦明[1] 

机构地区：[1]天津医科大学口腔医院,天津300070

出　　处：《牙体牙髓牙周病学杂志》2008年第6期341-344,共4页Chinese Journal of Conservative Dentistry

摘　　要：目的：研究直接数字成像方法对根尖周微小骨病损检测能力，并与传统成像方法对比。方法：在干燥的下颌骨骨皮质上制作直径0．6～2．0mm圆形病损，分别采用传统成像法和直接数字成像方法拍摄标准化根尖定位片，得到传统胶片图像、原始数字图像、优化处理后数字图像3组图像，由5名医师采用双盲法，对拍摄结果评估，用秩和检验法对评估结果进行统计学分析。结果：直接数字成像方法对于直径在0．6mm骨病损检测能力高于传统胶片成像法，随着病损增大，两者的检测能力逐渐增加，但差别缩小，而当病损直径增至1．6mm时，传统胶片成像检测能力高于直接数字成像方法。当病损直径增至2．0mm时，两种图像间判断结果无差别。结论：直接数字成像与传统成像对于根尖周微小骨病损均有较高检测能力，在病损直径微小阶段，直接数字成像占优势，病损直径稍大阶段，传统成像占优势。AIM： To study the dental radiography for periapical bone lesions, and compared with convention- al dental radiography. METHODS ： Experimental periapical bone lesions were made in six dry human mandible using #1/2 to 7round burs. The sizes of round burs were 0.6mm,0.8mm, 1.0 mm, 1.2 mm, 1.6 mm and 2.0 mm. Radiographic images were took by digital and conventional dental radiography. The digital dental radiographic images and films were reading by 5 observers. RESULTS：Results were evaluated with statistically analysis. As the bone lesions were small（0.6mm in diameter） ,the sensitivity of digital dental radiography was higher than the conventional. Both of the sensitivity of two radiographic ways became higher in larger bone lesions, but the difference of two radiographic ways is smaller. The sensitivity of conventional radiography was higher than the digital dental radiography as the bone lesions were 1.6mm in diameter. CONCLUSION ： The diagnostic performance of direct dental radiography and con- ventional dental radiography are both promising techniques in smaller periapical bone lesions. The direct digital dental radiography is better than the conventional dental radiography with more large lesions.

关 键 词：数字化影像 图像处理 根尖周病 

分 类 号：R812[医药卫生—放射医学]