image registration
The computational process of aligning multiple neuroimaging datasets to a common spatial coordinate system for comparison and analysis.
Full Definition
Image registration is a fundamental preprocessing step in neuroimaging analysis that involves the geometric alignment of multiple brain images, whether from the same subject at different time points, different subjects, or different imaging modalities. The process uses mathematical transformations (rigid, affine, or non-linear) to optimize spatial correspondence between datasets, enabling voxel-wise comparisons and statistical analyses. Registration quality critically affects all subsequent analyses, including group studies, longitudinal comparisons, and multimodal integrations. Editors reviewing neuroimaging studies should understand that registration accuracy directly impacts the validity of spatial statistical inferences and cross-subject comparisons.
Usage
Usage note: Specify transformation type (rigid, affine, non-linear) and target template when describing methods.
In Context
- "Non-linear image registration was performed using the Advanced Normalization Tools software package." — neuroimaging preprocessing methodology
- "The multimodal study required careful image registration between structural and functional datasets." — combined imaging protocol description