Studies in a viewer session are assigned one of three relationship states.
| Current study | This is the primary study from which all other designations apply. The primary study is the first study specified in the open request, which is typically the first study on the worklist. In the Patient Folder, the primary study is indicated by a study cell with the top-right corner folded over. |
| Prior study | Studies whose information matches the configured relevant prior matching criteria. |
| Unrelated | Studies that are not the primary and do not match the relevant prior matching criteria. |
Each of the three relationship states are assigned a color and border detail. The thumbnail panel uses the color and border detail in the study header, presentation group header and individual series thumbnails. The color and border detail appear in the image frame as well, with the frame border and drag icon displayed in the applicable color and the frame border outlined with the border detail.
The study relationship colors are configurable in the Customize Settings Color panel.