diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/FusionForm.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/FusionForm.vue
index da679bdf..07c786b6 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/FusionForm.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/FusionForm.vue
@@ -158,7 +158,7 @@ export default {
           }).then(() => { }).catch(() => { })
           return
         }
-        var count = Math.abs(this.fusionForm.ctSeriesInfo.instanceCount - this.fusionForm.petSeriesInfo.instanceCount)
+        var count = Math.abs(this.fusionForm.ctSeriesInfo.InstanceCount - this.fusionForm.petSeriesInfo.InstanceCount)
         if (count > 10) {
           // '选择的两组序列，影像数存在较大差距, 是否继续?'
           this.$confirm(this.$t('trials:lugano:fusionDialog:message:validSeries'), this.$t('trials:lugano:fusionDialog:warning'), {