brain extraction
Automated removal of non-brain tissue from neuroimages to isolate brain parenchyma for subsequent analysis.
Full Definition
Brain extraction, also known as skull stripping, is a preprocessing step that computationally removes skull, scalp, and other non-brain tissues from neuroimaging datasets to isolate the brain parenchyma. This process is essential for accurate registration, segmentation, and quantitative analysis of brain structures. Various algorithms such as BET (Brain Extraction Tool), 3dSkullStrip, or deep learning-based methods are employed to automatically delineate the brain boundary while preserving important anatomical details and avoiding tissue misclassification.
Usage
Usage note: Specify the algorithm and parameters used; quality control is essential.
In Context
- "Brain extraction was performed using FSL BET with a fractional intensity threshold of 0.3." — Methods section
- "Quality control revealed incomplete brain extraction requiring manual editing of the skull-stripped mask." — Data processing report