diff --git a/src/views/trials/trials-panel/reading/dicoms/components/Fusion/PetCt.vue b/src/views/trials/trials-panel/reading/dicoms/components/Fusion/PetCt.vue
index 9cdb0864..1bb495da 100644
--- a/src/views/trials/trials-panel/reading/dicoms/components/Fusion/PetCt.vue
+++ b/src/views/trials/trials-panel/reading/dicoms/components/Fusion/PetCt.vue
@@ -351,6 +351,7 @@ const ctVolumeName = 'CT_VOLUME_ID' // Id of the volume less loader prefix
 const ctVolumeId = `${volumeLoaderScheme}:${ctVolumeName}` // VolumeId with loader id + volume id
 const ptVolumeName = 'PT_VOLUME_ID'
 const ptVolumeId = `${volumeLoaderScheme}:${ptVolumeName}`
+const ptVolumeId2 = `${volumeLoaderScheme}:${ptVolumeName}2`
 const ctToolGroupId = 'CT_TOOLGROUP_ID'
 const ptToolGroupId = 'PT_TOOLGROUP_ID'
 const fusionToolGroupId = 'FUSION_TOOLGROUP_ID'
@@ -416,8 +417,10 @@ export default {
       renderingEngineId: renderingEngineId,
       ctVolumeId: `${volumeLoaderScheme}:${ctVolumeName}`,
       ptVolumeId: `${volumeLoaderScheme}:${ptVolumeName}`,
+      ptVolumeId2: `${volumeLoaderScheme}:${ptVolumeName}2`,
       ctVolume: null,
       ptVolume: null,
+      ptVolume2: null,
       isReadingShowSubjectInfo: false,
       subjectCode: '',
       taskBlindName: '',
@@ -988,6 +991,9 @@ export default {
         this.ptVolume = await volumeLoader.createAndCacheVolume(ptVolumeId, {
           imageIds: ptImageIds
         })
+        this.ptVolume2 = await volumeLoader.createAndCacheVolume(ptVolumeId2, {
+          imageIds: ptImageIds
+        })
         // 重置计时器
         this.resetTimer()
       } catch (error) {
@@ -1495,7 +1501,7 @@ export default {
         renderingEngine,
         [
           {
-            volumeId: ptVolumeId,
+            volumeId: ptVolumeId2,
             callback: setPetColorMapTransferFunctionForVolumeActor
           },
           {