文章基本信息

标题：Volumetric quantification of bone-implant contact using micro-computed tomography analysis based on region-based segmentation
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作者：Kang, Sung-Won ; Lee, Woo-Jin ; Choi, Soon-Chul 等
期刊名称：Imaging Science in Dentistry
印刷版ISSN：2233-7822
出版年度：2015
卷号：45
期号：1
页码：7-13
DOI：10.5624/isd.2015.45.1.7
语种：English
出版社：Korean Academy of Oral and Maxillofacial Radiology
摘要：Purpose
We have developed a new method of segmenting the areas of absorbable implants and bone using region-based segmentation of micro-computed tomography (micro-CT) images, which allowed us to quantify volumetric bone-implant contact (VBIC) and volumetric absorption (VA).
Materials and Methods
The simple threshold technique generally used in micro-CT analysis cannot be used to segment the areas of absorbable implants and bone. Instead, a region-based segmentation method, a region-labeling method, and subsequent morphological operations were successively applied to micro-CT images. The three-dimensional VBIC and VA of the absorbable implant were then calculated over the entire volume of the implant. Two-dimensional (2D) bone-implant contact (BIC) and bone area (BA) were also measured based on the conventional histomorphometric method.
Results
VA and VBIC increased significantly with as the healing period increased (p<0.05). VBIC values were significantly correlated with VA values (p<0.05) and with 2D BIC values (p<0.05).
Conclusion
It is possible to quantify VBIC and VA for absorbable implants using micro-CT analysis using a region-based segmentation method.
关键词：Absorbable implants; Osseointegration; X-ray microtomography; Computer-assisted image processing