A novel system for the 3-D reconstruction of the human spine and rib cage from biplanar X-ray images

被引：54

作者：

Cheriet, F.

Laporte, C.

Kadoury, S.

Labelle, H.

Dansereau, J.

机构：

[1] Ecole Polytech, Dept Comp Engn, Montreal, PQ H3C 3A7, Canada

[2] Hop St Justine, Res Ctr, Montreal, PQ H3T 1C5, Canada

[3] McGill Univ, Ctr Intelligent Machines, Montreal, PQ H3A 2A7, Canada

[4] Ecole Polytech, Dept Mech Engn, Montreal, PQ H3C 3A7, Canada

来源：

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING | 2007年 / 54卷 / 07期

关键词：

explicit calibration; nonlinear optimization; spinal deformities; X-ray images; 3-D reconstruction;

D O I：

10.1109/TBME.2006.889205

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The main objective of this study was to develop a 3-D X-ray reconstruction system of the spine and rib cage for an accurate 3-D clinical assessment of spinal deformities. The system currently used at Sainte-Justine Hospital in Montreal is based on an implicit calibration technique based on a direct linear transform (DLT), using a sufficiently large rigid object incorporated in the positioning apparatus to locate any anatomical structure to be reconstructed within its bounds. During the time lapse between the two successive X-ray acquisitions required for the 3-D reconstruction, involuntary patient motion introduce errors due to the incorrect epipolar geometry inferred from the stationary object. An approach using a new calibration jacket and explicit calibration algorithm is proposed in this paper. This approach yields accurate results and compensates for involuntary motion occurring between X-ray exposures.

引用

页码：1356 / 1358

页数：3

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