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| 早期自然釉质龋光学相干断层图像定量分析 | |
| 引用本文： | 连小丽,姚晖,李燕妮,徐廷勇,代晓华,张林朴. 早期自然釉质龋光学相干断层图像定量分析[J]. 国际生物医学工程杂志, 2011, 34(5): 257-260,I0001. DOI: 10.3760/cma.j.issn.1673-4181.2011.05.001 |
| 作者姓名： | 连小丽 姚晖 李燕妮 徐廷勇 代晓华 张林朴 |
| 作者单位： | 300041,天津市口腔医院暨南开大学附属口腔医院实验研究中心 |
| 基金项目： | 国家自然科学基金面上项目（30770597） |
| 摘 要： | 目的 通过对早期自然龋变光学相干断层成像(OCT)图像进行定量分析,寻找适于光学相干断层成像技术检测早期龋的定量参数指标.方法 选取D0期、D1期和D2期自然发生釉质龋双尖牙标本各3颗,利用光学相干断层成像分别对上述不同程度早期釉质龋人离体牙进行扫描,并以龋变区域(目标区域)平均灰度值与正常区域(背景区域)平均灰度之比... |
| 关 键 词： | 光学相干断层成像 人离体牙 早期龋 自然釉质龋 定量分析 平均灰度值 |
Quantitative analysis of optical coherence tomography images for early natural enamel caries |
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| LIAN Xiao-li,YAO Hui,LI Yan-ni,XU Yan-yong,DAI Xiao-hua,ZHANG Lin-pu. Quantitative analysis of optical coherence tomography images for early natural enamel caries[J]. International Journal of Biomedical Engineering, 2011, 34(5): 257-260,I0001. DOI: 10.3760/cma.j.issn.1673-4181.2011.05.001 | |
| Authors: | LIAN Xiao-li YAO Hui LI Yan-ni XU Yan-yong DAI Xiao-hua ZHANG Lin-pu |
| Affiliation: | . Research Center in Tianjin Stomatological Hospital and Affiliated Stomatological Hospital of Nankai University, Tianjin 300041, China |
| Abstract: | Objective Quantitative analysis of optical coherence tomography (OCT) images of naturally occurred early enamel caries was performed to find quantitative parameter indicator for detecting early caries by OCT.Methods Three human premolars with enamel natural caries in D0,D1,and D2 stages were selected respectively and scanned by OCT.The ratios of the average gray value of the caries region (object region) and sound region (background region),namely,the object-background contrast (OBC) were calculated in OCT images and selected as the quantitative parameters to analyze the OBC trend of different degree of enamel caries.Results Within the fixed depth,the OBC value showed a trend of first increase and then decrease with the severity of dental caries,indicating that OBC value increased with the severity of dental caries from normal to D1 stage,and then decreased from D1 to D2 stage.Conclusion The OBC value can be used as a new quantitative indicator for OCT to estimate the severity of naturally occurred early caries. |
| Keywords: | Optical coherence tomography Human extracted teeth Early caries Natural enamel caries Quantitative analysis Average gray value |
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