diff --git a/Packages/lesiontracker/components/lesionTable/lesionTable.js b/Packages/lesiontracker/components/lesionTable/lesionTable.js
index 6db192b7a..ec6e43a01 100644
--- a/Packages/lesiontracker/components/lesionTable/lesionTable.js
+++ b/Packages/lesiontracker/components/lesionTable/lesionTable.js
@@ -213,4 +213,56 @@ Template.lesionTable.events({
         var measurementId = $(e.currentTarget).data('measurementid');
         activateLesion(measurementId,template.data);
     }
-});
\ No newline at end of file
+});
+
+// Track ViewerData to get active timepoints
+// Put a visual indicator(<) in timepoint header in lesion table for active timepoints
+Tracker.autorun(function () {
+    var allViewerData = Session.get('ViewerData');
+    var contentId = Session.get('activeContentId');
+    if(allViewerData && contentId) {
+        var viewerData = allViewerData[contentId];
+        if (viewerData) {
+            // Get study dates of imageViewerViewport elements
+            var loadedStudyDates = {
+                patientId: "",
+                dates: []
+            };
+
+            $("#"+contentId+" .imageViewerViewport").each(function(viewportIndex, element) {
+                var enabledElement = cornerstone.getEnabledElement(element);
+                var imageId = enabledElement.image.imageId;
+                var study = cornerstoneTools.metaData.get('study', imageId);
+                var studyDate = study.studyDate;
+                var patientId = study.patientId;
+                loadedStudyDates.patientId = patientId;
+                // Check studyDate is added before
+                if (loadedStudyDates.dates.indexOf(studyDate) < 0) {
+                    loadedStudyDates.dates.push(studyDate);
+                }
+
+            });
+
+            // If study date is loaded into viewport, set timepointLoaded property in Timepoints collection as true
+            // Else set timepointLoaded property as false
+            if(loadedStudyDates.dates.length) {
+                var timepoints = Timepoints.find({patientId: loadedStudyDates.patientId}).fetch();
+                timepoints.forEach(function(timepoint){
+                    var timepointLoaded = false;
+                    if(loadedStudyDates.dates.indexOf(timepoint.timepointName) > -1) {
+                        timepointLoaded = true;
+                    }
+
+                    Timepoints.update(timepoint._id,{
+                        $set: {
+                            timepointLoaded: timepointLoaded
+                        }
+
+                    });
+                });
+            }
+        }
+    }
+
+});
+
diff --git a/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.html b/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.html
index 3d60fa64b..8122faeab 100644
--- a/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.html
+++ b/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.html
@@ -1,3 +1,3 @@
 <template name="lesionTableTimepointHeader">
-    <th class="lesionTableTimepointCell">{{formatDA timepointName "MM/DD/YYYY"}}</th>
+    <th class="lesionTableTimepointCell">{{formatDA timepointName "MM/DD/YYYY"}} {{ #if timepointLoaded }}<span class="timepointIndicator">&lt;</span> {{ /if }} </th>
 </template>
\ No newline at end of file
diff --git a/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.styl b/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.styl
new file mode 100644
index 000000000..c02911f99
--- /dev/null
+++ b/Packages/lesiontracker/components/lesionTableTimepointHeader/lesionTableTimepointHeader.styl
@@ -0,0 +1,3 @@
+.timepointIndicator
+  font-size 12px
+  line-height 12px
\ No newline at end of file
diff --git a/Packages/lesiontracker/package.js b/Packages/lesiontracker/package.js
index 8c2763f41..bf74bcc38 100644
--- a/Packages/lesiontracker/package.js
+++ b/Packages/lesiontracker/package.js
@@ -37,6 +37,7 @@ Package.onUse(function (api) {
 
     api.addFiles('components/lesionTableTimepointHeader/lesionTableTimepointHeader.html', 'client');
     api.addFiles('components/lesionTableTimepointHeader/lesionTableTimepointHeader.js', 'client');
+    api.addFiles('components/lesionTableTimepointHeader/lesionTableTimepointHeader.styl', 'client');
 
     api.addFiles('components/nonTargetLesionDialog/nonTargetLesionDialog.html', 'client');
     api.addFiles('components/nonTargetLesionDialog/nonTargetLesionDialog.css', 'client');
@@ -57,6 +58,7 @@ Package.onUse(function (api) {
     // Library functions
     api.addFiles('lib/uuid.js', 'client');
 
+
     api.export('Measurements', ['client', 'server']);
     api.export('Timepoints', ['client', 'server']);
 });
\ No newline at end of file