LabCAS Metadata and Common Data Elements
![LabCAS Metadata Model Overview](/media/images/LabCAS_Metadata_Model_Overview.width-800.png)
Data in Core metadata is common across all data in LabCAS. Data extensions are used to extend the metadata for specific data categories, modalities, etc. Multiple extensions can be used when annotating a dataset or file. For example, radiology files may all use a common DICOM extension + a specific extension for mammography.