diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/SegmentForm.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/SegmentForm.vue
index 7157377e..7e89cd6c 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/SegmentForm.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/SegmentForm.vue
@@ -76,7 +76,7 @@ export default {
             this.series = series
         },
         async init() {
-            let studyList = this.visitInfo.StudyList
+            let studyList = Object.assign(this.visitInfo.StudyList, {})
             let s = await this.getSegmentationList()
             this.segmentionList = s
             let StudyIds = s.map(item => item.StudyId)