Geometric variability of the scoliotic spine using statistics on articulated shape models

被引:57
作者
Boisvert, Jonathan [1 ,2 ]
Cheriet, Farida [1 ,2 ]
Pennec, Xavier [3 ]
Labelle, Hubert [2 ]
Ayache, Nicholas [3 ]
机构
[1] Ecole Polytech, Montreal, PQ H3T 1J4, Canada
[2] Hop St Justine, Montreal, PQ H3G 1A4, Canada
[3] INRIA, F-06902 Sophia Antipolis, France
基金
加拿大健康研究院; 加拿大自然科学与工程研究理事会;
关键词
anatomical variability; orthopaedic treatment; radiograph; rigid transformations; scoliosis; spine; statistical shape analysis;
D O I
10.1109/TMI.2007.911474
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
This paper introduces a method to analyze the variability of the spine shape and of the spine shape deformations using articulated shape models. The spine shape was expressed as a vector of relative poses between local coordinate systems of neighboring vertebrae. Spine shape deformations were then modeled by a vector of rigid transformations that transforms one spine shape into another. Because rigid transformations do not naturally belong to a vector space, conventional mean and covariance could not be applied. The Frechet mean and a generalized covariance were used instead. The spine shapes of a group of 295 scoliotic patients were quantitatively analyzed as well as the spine shape deformations associated with the Cotrel-Dubousset corrective surgery (33 patients), the Boston brace (39 patients), and the scoliosis progression without treatment (26 patients). The variability of intervertebral poses was found to be inhomogeneous (lumbar vertebrae were more variable than the thoracic ones) and anisotropic (with maximal rotational variability around the coronal axis and maximal translational variability along the axial direction). Finally, brace and surgery were found to have a significant effect on the Frechet mean and on the generalized covariance in specific spine regions where treatments modified the spine shape.
引用
收藏
页码:557 / 568
页数:12
相关论文
共 42 条
[1]  
[Anonymous], 2012, Methods of multivariate analysis
[2]  
Arsigny V, 2005, LECT NOTES COMPUT SC, V3749, P115
[3]   Variability of spinal instrumentation configurations in adolescent idiopathic scoliosis [J].
Aubin, Carl-Eric ;
Labelle, Hubert ;
Ciolofan, Oana C. .
EUROPEAN SPINE JOURNAL, 2007, 16 (01) :57-64
[4]   Morphometric evaluations of personalised 3D reconstructions and geometric models of the human spine [J].
Aubin, CE ;
Dansereau, J ;
Parent, F ;
Labella, H ;
de Guise, JA .
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, 1997, 35 (06) :611-618
[5]   A rigorous framework for diffusion tensor calculus [J].
Batchelor, PG ;
Moakher, M ;
Atkinson, D ;
Calamante, F ;
Connelly, A .
MAGNETIC RESONANCE IN MEDICINE, 2005, 53 (01) :221-225
[6]  
Boisvert J, 2006, I S BIOMED IMAGING, P750
[7]  
Cobb J, 1948, Instructional Course Lectures, V5, P261
[8]  
COMMOWICK O, 2005, P 8 INT C MED IM COM, P927
[9]  
Conover W. J., 1980, PRACTICAL NONPARAMET
[10]   Intraoperative comparison of two instrumentation techniques for the correction of adolescent idiopathic scoliosis -: Rod rotation and translation [J].
Delorme, S ;
Labelle, H ;
Aubin, CÉ ;
de Guise, JA ;
Rivard, CH ;
Poitras, B ;
Coillard, C ;
Dansereau, J .
SPINE, 1999, 24 (19) :2011-2017