diff --git a/extensions/cornerstone/src/toolbarModule.js b/extensions/cornerstone/src/toolbarModule.js
index c2d5c844c..5a5d2c0a0 100644
--- a/extensions/cornerstone/src/toolbarModule.js
+++ b/extensions/cornerstone/src/toolbarModule.js
@@ -186,6 +186,15 @@ const definitions = [
         type: TOOLBAR_BUTTON_TYPES.COMMAND,
         commandName: 'clearAnnotations',
       },
+      {
+        id: 'Bidirectional',
+        label: 'Bidirectional',
+        icon: 'measure-target',
+        //
+        type: TOOLBAR_BUTTON_TYPES.COMMAND,
+        commandName: 'setToolActive',
+        commandOptions: { toolName: 'Bidirectional' },
+      },
       {
         id: 'Eraser',
         label: 'Eraser',