Chinese Journal of Tissue Engineering Research ›› 2011, Vol. 15 ›› Issue (13): 2327-2330.doi: 10.3969/j.issn.1673-8225.2011.13.012

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A method of intra-operative spine fast correction based on 2D/3D registration

Zeng Ling, Yu Wei-wei, Xi Ping   

  1. School of Mechanical Engineering and Automation, Beihang University, Beijing  100191, China
  • Received:2010-10-11 Revised:2011-02-16 Online:2011-03-26 Published:2013-10-23
  • About author:Zeng Ling, School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, China
  • Supported by:

    the Natural Science Foundation of Yunnan Province, No. 2008-C-0013-R*

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Abstract:

BACKGROUND: The preoperative three-dimensional (3D) diagnosis and treatment. As patient’s posture changes, the intra-operative shape of spine is deferent form the preoperative. So the preoperative images can not reflect the intra-operative situation. And doctor can not ensure the smooth implementation of the operation.
OBJECTIVE: To correct preoperative spine models using intra-operative image.
METHODS: This paper presented an approach based on 2D/3D registration to correct preoperative images during operation. We use digitally reconstructed radiograph (DRR) to register CT to X-ray image. Then complete the feature registrations of all independent vertebra segments between intra-operative and preoperative X-ray images. The results of above registrations are exploited to fast correct the preoperative spine models.
RESULTS AND CONCLUSION: Using marked cervical spine specimens for experiment, the deviation of the spine model can be basically eliminated after correction. The error between intra-operative and corrected preoperative spine model is less than 1mm. And clinical requirements can be met.

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