diff --git a/extensions/dicom-rt/src/index.js b/extensions/dicom-rt/src/index.js
index ff308e133..29efbcee6 100644
--- a/extensions/dicom-rt/src/index.js
+++ b/extensions/dicom-rt/src/index.js
@@ -112,6 +112,10 @@ export default {
                   ['RTSTRUCT'].includes(ds.Modality)
                 )
               ) {
+                triggerRTPanelUpdatedEvent({
+                  badgeNumber: referencedDisplaySets.length,
+                  target: 'rt-panel',
+                });
                 return false;
               }
             }
diff --git a/extensions/dicom-segmentation/src/index.js b/extensions/dicom-segmentation/src/index.js
index c36d3fab7..3136527d2 100644
--- a/extensions/dicom-segmentation/src/index.js
+++ b/extensions/dicom-segmentation/src/index.js
@@ -126,7 +126,7 @@ export default {
           label: 'Segmentations',
           target: 'segmentation-panel',
           stateEvent: SegmentationPanelTabUpdatedEvent,
-          isDisabled: studies => {
+          isDisabled: (studies, activeViewport) => {
             if (!studies) {
               return true;
             }
@@ -139,6 +139,20 @@ export default {
                   const series = study.series[j];
 
                   if (series.Modality === 'SEG') {
+                    if (activeViewport) {
+                      const studyMetadata = studyMetadataManager.get(
+                        activeViewport.StudyInstanceUID
+                      );
+                      const referencedDS = studyMetadata.getDerivedDatasets({
+                        referencedSeriesInstanceUID:
+                          activeViewport.SeriesInstanceUID,
+                        Modality: 'SEG',
+                      });
+                      triggerSegmentationPanelTabUpdatedEvent({
+                        badgeNumber: referencedDS.length,
+                        target: 'segmentation-panel',
+                      });
+                    }
                     return false;
                   }
                 }