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Assessing validation of dual fluoroscopic image matching method for measurement of in vivo spine kinematics
Bai Jian-qiang1,2; Hu Yong-cheng2; Du Li-qing3,4; He Jing-liang2; Liu Kai2; Liu Zhong-jun1; Xia Qun2
关键词Lumbar Spine Validation Dual Fluoroscopes Matching Method
刊名CHINESE MEDICAL JOURNAL
2011-06-05
DOI10.3760/cma.j.issn.0366-6999.2011.11.016
124期:11页:1689-1694
收录类别SCI
文章类型Article
WOS标题词Science & Technology
类目[WOS]Medicine, General & Internal
研究领域[WOS]General & Internal Medicine
关键词[WOS]LUMBAR SPINE ; CERVICAL-SPINE ; SEGMENTAL MOTION ; AXIAL ROTATION ; REGISTRATION ; ACCURACY ; ERRORS ; SYSTEM
英文摘要

Background Accurate knowledge of the spinal structural functions is critical to understand the biomechanical factors that affect spinal pathology. Many studies have investigated the human vertebral motion both in vitro and in vivo. However, determination of in vivo motion of the vertebrae under physiologic loading conditions remains a challenge in biomedical engineering because of the limitations of current technology and the complicated anatomy of the spine.

Methods For in vitro validation, a human lumbar specimen was imbedded with steel beads and moved to a known distance by an universal testing machine (UTM). The dual fluoroscopic system was used to capture the spine motion and reproduce the moving distance. For in vivo validation, a living subject moved the spine in various positions while bearing weight. The fluoroscopes were used to reproduce the in vivo spine positions 5 times. The standard deviations in translation and orientation of the five measurements were used to evaluate the repeatability of technique. The accuracy of vertebral outline matching with metallic marks matching technology was compared.

Results The translation positions of the human lumbar specimen could be determined with a mean accuracy less than 0.35 mm and a mean repeatability 0.36 mm for the image matching technique. The repeatability of the method in reproducing in vivo human spine six degrees of freedom (6DOF) kinematics was less than 0.43 mm in translation and less than 0.65 degrees in rotation. The accuracy of metallic marks and vertebral outline matching did not show significant difference.

Conclusions Combining a dual fluoroscopic and computerized tomography imaging technique was accurate and reproduceable for noninvasive measurement of spine vertebral motion. The vertebral outline matching technique could be a useful technique for matching of vertebral positions and orientations which can evaluate and improve the efficacy of the various surgical treatments. Chin Med J 2011;124(11):1689-1694

语种英语
WOS记录号WOS:000292350000017
引用统计
文献类型期刊论文
条目标识符http://ir.bjmu.edu.cn/handle/400002259/52648
专题北京大学第三临床医学院_骨科
作者单位1.Peking Univ, Hosp 3, Dept Orthopaed, Beijing 100191, Peoples R China
2.Tianjin Hosp, Dept Spinal Surg, Tianjin 300211, Peoples R China
3.Peking Union Med Coll, Tianjin Key Lab Mol Nucl Med, Tianjin 300192, Peoples R China
4.Chinese Acad Med Sci, Inst Radiat Med, Tianjin 300192, Peoples R China
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Bai Jian-qiang,Hu Yong-cheng,Du Li-qing,et al. Assessing validation of dual fluoroscopic image matching method for measurement of in vivo spine kinematics[J]. CHINESE MEDICAL JOURNAL,2011,124(11):1689-1694.
APA Bai Jian-qiang.,Hu Yong-cheng.,Du Li-qing.,He Jing-liang.,Liu Kai.,...&Xia Qun.(2011).Assessing validation of dual fluoroscopic image matching method for measurement of in vivo spine kinematics.CHINESE MEDICAL JOURNAL,124(11),1689-1694.
MLA Bai Jian-qiang,et al."Assessing validation of dual fluoroscopic image matching method for measurement of in vivo spine kinematics".CHINESE MEDICAL JOURNAL 124.11(2011):1689-1694.
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