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	计算机处理MR图像股骨头坏死体积测定与初步力学测验
	史振才 ; 李子荣 ; 孙伟 ; 张雪哲 ; 王武 ; 黄振国 ; 洪闻 ; 卢清萍 ; 林峰 ; 赵万鹏 ; SHI Zhen-cai ; LI Zi-rong ; Sun Wei ; ZHANG Xue-zhe ; WANG Wu ; HUANG Zhen-guo ; HONG Wen ; LU Qing-ping ; LIN Feng ; ZHAO Wan-peng
	2010-06-08 ; 2010-06-08
关键词	磁共振成像 成像,三维 坏死 股骨头 Magnetic resonance imaging Imaging,three-dimensional Osteonecrosis Femoral head R445.2
其他题名	Volumetric measurement of osteonecrosis of the femoral head using computerized MR and primary mechanical test
中文摘要	目的依据MR图像数据在计算机上测定股骨头坏死的部位和体积,探讨其准确性及临床意义,并获得初步有限元分析结果。方法29例(38髋)晚期股骨头坏死行全髋人工关节置换术的患者,术前获得髋关节MR图像冠状面T1WI的医学数字影像传输(DICOM)格式数据。利用Mimics等软件获得相应的股骨头三维重构模型,读取股骨头及其坏死病灶的体积。使用移水法测出大体股骨头及其坏死病灶的体积。模拟人体载荷计算机有限元分析。结果股骨头坏死病灶位于股骨头的前外上方,与大体股骨头坏死病灶位置相符。计算机上测得坏死病灶和整个股骨头的体积分别为(20.1±6.6)cm3、(49.0±4.6)cm3,与大体测量值(20.2±6.5)cm3、(49.3±4.5)cm3间差异无统计学意义(t=-0.965,P=0.341;t=-1.592,P=0.120)。有限元计算结果当坏死体积>30%时,可见片状塌陷区。结论股骨头坏死的计算机三维模型可以直观地理解病灶的形状和位置,准确地测出病灶体积。如股骨头坏死体积>30%,易发生股骨头塌陷。; Objective To explore the accuracy and the clinical value of necrotic lesion location and volume measured using MRI (T_1-weighted) coronal data sets.Methods Twenty-nine patients (38 hips) with osteonecrosis of the femoral head at late stage were performed by total hip arthroplasty. All patients were subjected to MRI imaging before operation. MRI (T_1-weighted) coronal data sets were transferred to a computer in DICOM format using import and export images software(Mimics). A three-dimensional model of osteonecrosis of the femoral head was reconstructed. The volume of the femoral head and the volume of the necrotic lesion were calculated using software. The volume of the entire femoral head and the necrotic lesion were measured using fluid displacement. The risk of collapse of different osteonecrotic volume of the femoral head was evaluated using three-dimensional finite element analysis. Results The necrotic lesion was at anterolateral and superior portion of the femoral head in the reconstructed three-dimensional model of osteonecrosis of the femoral head, according with the anatomical location of the lesion. The volumes of the necrotic lesion and entire femoral head obtained by computer and anatomical measurememts were (20.1�6)cm3, (49.0�6)cm3, and (20.2�5)cm3, (49.3�5)cm3. There was no significant difference between these two methods(t=-0.965,P=0.341;t=-1.592,P=0.120). When the necrotic volume was more than 30%, large area of collapse would occur. Conclusion A three-dimensional model of osteonecrosis of the femoral head can be reconstructed exactly using computer. This will be helpful for orthopeadic surgeon to understand the shape and location of necrotic lesion of the femoral head intuitively and stereospecificlly. The volume of osteonecrosis can be determined with accuracy by computer, which is to match with anatomic volume of lesion. If the necrotic volume of the femoral head was more than 30%, it is easy to lead to collapse.; 首都医学发展科研基金资助项目(2002-1007); 卫生部部属(管)医疗机构临床学科重点项目(2004-2006)
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/48418]
专题	清华大学
推荐引用方式 GB/T 7714	史振才,李子荣,孙伟,等. 计算机处理MR图像股骨头坏死体积测定与初步力学测验[J],2010, 2010.
APA	史振才.,李子荣.,孙伟.,张雪哲.,王武.,...&ZHAO Wan-peng.(2010).计算机处理MR图像股骨头坏死体积测定与初步力学测验..
MLA	史振才,et al."计算机处理MR图像股骨头坏死体积测定与初步力学测验".(2010).

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