diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
index f7bcd157..32c1cf88 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
@@ -2553,10 +2553,11 @@ export default {
         this.isFusion = false
         this.isMPR = false
         this.fullScreenIndex = null
+        this.rows = 1
+        this.cols = 1
+        this.activeViewportIndex = 0
         this.setToolsPassive()
       }
-      this.rows = 1
-      this.cols = 1
       if (taskIndex === this.activeTaskIndex) return
       if (!this.selectArr.includes(taskInfo.VisitTaskId)) {
         this.selectArr.push(taskInfo.VisitTaskId)