赛加羚羊头骨的三维重建研究及其精确度评价  

Three-dimensional Reconstruction and Precision Evaluation of the Skull of Saiga Antelope(Saiga tatarica)

作　　者：何鹏 周应杰[2] 张瑞[3] 景丽百合 张燕[1] 丁东方 王建林 HE Peng;ZHOU Ying-Jie;ZHANG Rui;JING Li-Bai-He;ZHANG Yan;DING Dong-Fang;WANG Jian-Lin(School of Life Science,Lanzhou University,Lanzhou 730000;State Forest Administration Gansu Protection Centre of Threatened Species,Wuwei 733000;School of Stomatology,Lanzhou University,Lanzhou 730000;College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,China)

机构地区：[1]兰州大学生命科学学院,兰州730000 [2]国家林业局甘肃濒危动物保护中心,武威733000 [3]兰州大学口腔医学院,兰州730000 [4]兰州大学草地农业科技学院,兰州730020

出　　处：《动物学杂志》2022年第2期289-299,共11页Chinese Journal of Zoology

基　　金：甘肃省科技厅重点研发计划项目(No.17YF1NH084)。

摘　　要：为建立赛加羚羊(Saiga tatarica)头骨三维可视化模型,进一步研究赛加羚羊头骨的解剖特征,建立赛加羚羊头骨的“数字化标本”,以提高其疾病诊治的准确率和物种保护的有效性。本研究以国家林业局甘肃濒危动物保护中心的赛加羚羊为研究对象,经锥形束CT扫描获得影像数据,运用MIMICS 20.0软件对赛加羚羊头骨扫描数据进行处理和三维重建,以建立赛加羚羊的“数字化头骨”用于形态研究。运用MIMICS 20.0软件对数字化头骨的26项形态学指标(n=8)进行三维测量,且与头骨标本游标卡尺的测量值(n=8)进行配对样本t检验分析,经与真实测量值比较后评价数字化模型及其三维测量的准确性。结果显示,26项形态测量指标均与真实头骨无显著性差异(P>0.05),例如颅全长游标卡尺测量值为(227.147±10.646)mm,三维测量值为(227.130±10.638)mm,P=0.635,表明三维重建后的数字化头骨和真实的头骨标本高度相似,且“数字标本”能够实现任意角度的旋转、剖切和测量。本研究可为赛加羚羊头部疾病如骨折等的治疗及骨骼系统的三维可视化研究提供基础依据和技术支撑,同时可为CT扫描和医学图像三维可视化技术在野生动物的临床应用和相关研究提供理论基础。[Objectives]The establishment of three-dimensional(3D)visual model of the skull of Saiga Antelope(Saiga tatarica)could be helpful in studying its anatomical features and further enhancing the accuracy of disease diagnosis as well as the effectiveness of species protection through“digital specimen”.[Methods]This study took the S.tatarica which is identified as an endangered species by State Forest Administration Gansu Protection Centre of Threatened Species as the research object.Cone-beam CT scanning and 3D reconstruction techniques were utilized to scan and reconstruct the skull of S.tatarica for morphological study.A total of 26 morphological parameters of the skull model were measured digitally with the measuring tool of the Mimics20.0(Fig.2),where the data were presented in the form of Mean±SD.These results were compared with physical measurements obtained by vernier caliper and t-test between them was performed(Fig.3).[Results]The high-precision 3D digital model of the skull of S.tatarica was successfully reconstructed.The reconstructed digital skull model could realize scaling and rotation,multi-angle cutting and measurement,and could better reflect the external characteristics,internal and three-dimensional structure of the head structure.The results showed that all the indexes(n=8)had no significant difference from those obtained by physical measurements(P>0.05).For example,for the full lengths of the skull obtained by vernier caliper and the digital model were 227.147±10.646 mm and 227.130±10.638 mm,respectively,similar between the“digital skull”and the dry skull(Table 1,P=0.635).[Conclusion]This study has obtained the digital 3D model of the skull of S.tatarica,and compared the morphological characteristics of the skull using CT scanning and 3D reconstruction technology,which can provide the help for the diagnosis and treatment of head diseases as well as protection of this species.At the same time,it provides a theoretical basis for the clinical application and related research of CT scannin

关 键 词：赛加羚羊 头骨 锥形束CT 三维重建 

分 类 号：Q954[生物学—动物学]