diff --git a/src/views/trials/trials-panel/reading/dicoms/components/DicomCanvas.vue b/src/views/trials/trials-panel/reading/dicoms/components/DicomCanvas.vue
index 20615d7..8416a78 100644
--- a/src/views/trials/trials-panel/reading/dicoms/components/DicomCanvas.vue
+++ b/src/views/trials/trials-panel/reading/dicoms/components/DicomCanvas.vue
@@ -293,7 +293,8 @@ export default {
       ],
       scrollSyncInfo: { offset: 0 },
       hideMeasureArr: [],
-      IsCriticalSequence: false
+      IsCriticalSequence: false,
+      isInitWwwc: true
 
     }
   },
@@ -1060,6 +1061,7 @@ export default {
         } else {
           this.IsCriticalSequence = false
         }
+        this.isInitWwwc = true
         this.isCurrentTask = dicomSeries.isCurrentTask
         this.isBaseline = dicomSeries.isBaseLineTask
         this.readingTaskState = dicomSeries.readingTaskState
@@ -1319,7 +1321,6 @@ export default {
         // this.initWwc()
         this.imageId = instanceId
       }
-      this.resetWwwc()
       this.stack.instanceId = instanceId
       var viewport = e.detail.viewport
       this.dicomInfo.wwwc = `${Math.round(
@@ -1337,6 +1338,9 @@ export default {
         this.scrollSyncInfo.offset = 0
       }
       this.renderMeasuredData(e)
+      if (this.isInitWwwc) {
+        this.resetWwwc()
+      }
     },
     getOrientationMarker(element) {
       const enabledElement = cornerstone.getEnabledElement(element)
@@ -1689,6 +1693,7 @@ export default {
     },
 
     resetWwwc() {
+      this.isInitWwwc = true
       this.toolState.viewportInvert = false
       var viewport = cornerstone.getViewport(this.canvas)
       // viewport.invert = false
@@ -1700,6 +1705,7 @@ export default {
 
     setWwwc(ww, wc) {
       // console.log('setWwwc', ww, wc)
+      this.isInitWwwc = false
       var viewport = cornerstone.getViewport(this.canvas)
       viewport.voi.windowWidth = ww
       viewport.voi.windowCenter = wc