Comparative evaluation of voxel similarity measures for affine registration of diffusion tensor MR images

被引:3
|
作者
Pollari, Mika [1 ]
Neuvonen, Tuomas [2 ]
Lilja, Mikko [1 ]
Lotjonen, Jyrki [3 ]
机构
[1] Aalto Univ, Biomed Engn Lab, POB 2200, Espoo 02015, Finland
[2] Aalto Univ, Dept Clin Neurophys, POB 2200, Espoo 02015, Finland
[3] VTT Infromat Technol, Miami, FL 33101 USA
关键词
image registration; image processing;
D O I
10.1109/ISBI.2007.356965
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Deriving an accurate cost function for tensor valued data has been one of the main difficulties in diffusion tensor image (DTI) registration. In this work, we evaluate and compare five voxel similarity measures: Euclidean distance (ED), Log-Euclidean distance (LOG), distance based on diffusion profiles (DP), diffusion mode based similarity (MBS), and multichannel version of sum of squared differences (SSD). In evaluation we used an optimization-independent evaluation protocol to assess the capture range, the number of local minima, and cyclic registrations to evaluate consistency. Statistically significant differences were observed: DP and MBS were found to be the most consistent similarity measures, ED had the least number of local minima, and SSD was inferior to other similarity measures in all evaluations.
引用
收藏
页码:768 / +
页数:2
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