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DICOM Tag Browser

Overview​

The DICOM Tag Browser is an integrated feature within the OmegaAI Image Viewer that provides direct access to the metadata embedded in DICOM images. It allows users to inspect, search, and navigate DICOM tags for any series or image instance in the active study — supporting clinical validation, image quality review, and diagnostic troubleshooting.

Accessing the DICOM Tag Browser​

  1. Open the study in the Image Viewer.
  2. Click More Options (⋯) in the top toolbar.
  3. Select Settings → DICOM Header Tags.

Settings menu showing DICOM Header Tags option under Settings

The DICOM Tags panel opens on the right side of the screen.

DICOM Tags panel open on the right side of the Image Viewer

Series and Instance Selection​

Two dropdown menus at the top of the panel control which image's metadata is displayed.

DropdownDescription
Series (left)Lists all series in the study, each identified by its number, modality, and description — e.g. 10 (MR): <SAG T1 PIT +C>. Select a series to load its tags.
Instance (right)Lists all image instances within the selected series — e.g. Instance 1, Instance 2. Select a specific instance to view its individual tag values.

Series and Instance dropdown menus at the top of the DICOM Tags panel

Clicking on any viewport automatically updates both dropdowns to reflect the series and instance of the active image, ensuring the displayed metadata always reflects the active viewport.

Tag Table​

All DICOM tags for the selected series and instance are displayed in a four-column table.

ColumnDescription
TagDICOM tag number in group, element format — e.g. (0010,0010)
TypeValue representation / data type — e.g. UI, CS, DA, SQ
ValueThe value stored in the tag for the selected instance
NameHuman-readable description of the tag

Four-column DICOM Tag Table showing Tag, Type, Value, and Name

Searching Tags​

To locate a specific tag:

  1. Hover over any column header — a Search input field appears above that column.
  2. Click the field to activate it (the border highlights in blue).
  3. Type a search term to filter the tag list by that column's values.

Column header Search input field active with blue border highlight

Sequence (SQ) Tags​

Tags of type SQ (Sequence) contain nested child tags and are identified by an expand arrow on the left side of the row. Click the arrow to expand the sequence and view its child tags in an indented hierarchy beneath the parent tag. Click the arrow again to collapse and hide the child tags.

Expanded SQ sequence tag showing nested child tags in an indented hierarchy

Tag Visibility​

To maintain Image Viewer performance, not all DICOM headers present in the image file are shown in the Tag Browser. To access the complete set of headers:

  • Download the study to your local machine.
  • Open the downloaded study in a dedicated third-party DICOM browser.

To learn more, see Download.