Extensible Neuroimaging Vocabulary for Data Sharing
This page is intended to collate and curate terms pertaining to data types and
measurement modalities occuring in the field of neuroimaging, especially focused on magnetic resonance imaging raw and processed datasets. This vocabulary will
be proposed as a datatype naming convention for data sharing using XNAT/XCEDE/CFF.
Whenever possible, the short name or abbreviation should be defined, if possible,
links to existing ontologies or semantic wikis such as Radlex or Neurolex should be added.
This information source will be automatically exported to an XML-file for later processing.
Contents |
General data types
Data types not pertaining to on specific data structure, but applicable to e.g. volumes, surfaces, networks, tracks.
| Segmentation | A segmentation/labeling/coloring of entities on a volume (voxel), surface (vertices or faces), 2D image (pixels), network (nodes or edges), tractography (fibers). *Need more refinement* |
| Probability map | Similar to segmentation, but quantifying probability of segmentation e.g. across a population, might also use statistical distribution as model, i.e. storing of parameters |
Magnetic resonance data meanings (measurement modalities)
A good online resource for definitions is MRT Information Portal
Diffusion datatypes
Raw data types
| DTI | Diffusion Tensor Imaging |
| DSI | Diffusion Spectrum Imaging |
Derived measures
| FA | Fractional anisotropy (map) | |
| MD | Mean diffusivity | |
| ODF | Orientation Density Function | |
| GFA | Generalized Fractional Anisotropy | |
| P0 | .... |
Tractography data types
Tractography algorithms
Probabilistic tractography
Deterministic tractography
- FACT
- EuDX
Network data types
| Attribute Network | A general type of network with attributes on the nodes and edges |
| Dynamic Network | A network that changes its topology and/or connection strength over time |
| Hierarchical Network | A network that expresses some hierarchy |
| Structural Network | A network containing structural, connectome data |
| Functional Network | A network where connections express some functional measure between timeseries |
| Effective Network | A network where connections express some sort of causal relationship |
Statistical Distributions
The parameters of statistical distributions can be expressed for instance on volumetric data structures, surfaces or networks. The Nifti-1 standard proposes a standard for distribution names and labelings using intent codes. Please refer to Nifti-1 Statistical Distributions Specification
MR acquisition protocols
Time series data
Reference to the INCF Electrophysiology task force.
