基于中华05骨龄标准的桡骨骨龄等级计算机评定系统的设计

Design of Computerized Assessment System for Radius Bone Age Grades according to CHN05

以中华05骨龄标准为依据,基于骨龄图像的DICOM格式,设计和实现了桡骨骨龄80级～84级的计算机评定软件系统。系统自动对手腕部数字X光图像进行了预处理,采用区域生长法与最大类间方差法结合的方式实现了桡骨的有效分割,选取了灰度特征、纹理特征以及融合度作为骨龄特征参数,设计k近邻分类器对骨龄特征数据进行等级分类,并且结合ITK、VTK和MFC设计了一款桡骨等级评定软件,实现了桡骨等级80至等级84的计算机评定。实验结果说明,该系统的平均准确率达到85.2%,具有可扩展性和易用性的特点,丰富了计算机评定骨龄系统的应用研究。

Based on the CHN05 and the bone age images in DICOM format,this paper designs and implements computerized assessment system for radius bone age grades.Firstly,the system automatically preprocess the digital X-ray image of the hand and wrist,secondly,the system propose a radius segmentation algorithm based on region growth method integrated with OTSU method,thirdly the system select partial representative gray feature and texture feature and propose fusion rate as a new feature at first,which is used the parameter of bone age feature,and then a classification experiment for radius grade was implemented with K Nearest Neighbor classifier,a radius rating system platform is established based on ITK、VTK and MFC and implements to rate radius from 80 grade to 84 grade.The results show that the average accuracy of the system is 85.2%,the system is characterized by the scalability,usability and automatic measurement,this paper enrich the computer application research of bone age evaluation system.