diff --git a/atlas/templates/atlas/case_displaysets.html b/atlas/templates/atlas/case_displaysets.html
index 9918b1cf..e79450fe 100755
--- a/atlas/templates/atlas/case_displaysets.html
+++ b/atlas/templates/atlas/case_displaysets.html
@@ -38,7 +38,8 @@
 {% block js %}
     <script>
         document.addEventListener("DOMContentLoaded", function () {
-            window.mountDicomViewers();
+            // Delay mounting slightly to ensure viewer assets and DOM are ready
+            setTimeout(function() { window.mountDicomViewers(); }, 200);
 
 
             {% if selected_displayset %}