Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (52): 9772-9776.doi: 10.3969/j.issn.1673-8225.2010. 52.021

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Analysis and evaluation on the principle of realignment of the statistical parametric mapping software package

Wang Chao1, Du Jian-ping2, Yan Bin1, Wang Da-hui2, Shi Da-peng2   

  1. 1 Information Engineering College, Information Engineering University, Zhengzhou  450002, Henan Province, China; 2 Department of Radiology, Henan People's Hospital, Zhengzhou  450002, Henan Province, China
  • Online:2010-12-24 Published:2010-12-24
  • Contact: Yan Bin, Doctor, Associate professor, Information Engineering College, Information Engineering University, Zhengzhou 450002, Henan Province, China ybspace2000@sina.com
  • About author:Wang Chao, Information Engineering College, Information Engineering University, Zhengzhou 450002, Henan Province, China charleswang0100@gmail.com
  • Supported by:

    the Science and Technology Development Program of Henan Province, No. 072300450240*

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Abstract:

BACKGROUND: Realignment is an important process in functional magnetic resonance imaging (fMRI) and the first step in the image preprocess of the widely used software package statistical parametric mapping (SPM). The reliability of the results is determined by the effect of realignment process.
OBJECTIVE: To analyze the basic principle and the key arithmetic in the process of realignment of SPM, including rigid body transformation, Gauss-Newton optimization and B-spline Interpolation.
METHODS: A set of real data were processed utilizing SPM2. Combined with the principle of the realignment, a way to evaluate the effect of the realignment is proposed: measure map and measure quality.
RESULTS AND CONCLUSION: Gauss-Newton optimization obtained optimized rigid body transformation parameters; B-spline Interpolation was used to obtain corrected images. Results show that these evaluation indexes can preferably evaluate the principle effect.

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