diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/PetCtViewport.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/PetCtViewport.vue
index 68714485..1395e562 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/PetCtViewport.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/PetCtViewport.vue
@@ -123,6 +123,10 @@ export default {
       type: Number,
       required: true
     },
+    activeTool: {
+      type: String,
+      default: ''
+    },
   },
   data() {
     return {
@@ -254,9 +258,14 @@ export default {
           this.defaultWindowLevel.windowCenter = windowCenter
           this.imageInfo.wwwc = `${Math.round(windowWidth)}/${Math.round(windowCenter)}`
         }
-        const toolGroupId = this.viewportId
-        const toolGroup = cornerstoneTools.ToolGroupManager.getToolGroup(toolGroupId)
-        toolGroup.setToolEnabled('ScaleOverlay')
+        const toolGroup =
+          cornerstoneTools.ToolGroupManager.getToolGroupForViewport(
+            this.viewportId,
+            this.renderingEngineId
+          ) || cornerstoneTools.ToolGroupManager.getToolGroup(this.viewportId)
+        if (toolGroup) {
+          toolGroup.setToolEnabled('ScaleOverlay')
+        }
       }
 
     },
@@ -829,6 +838,7 @@ export default {
       this.sliderInfo.isMove = false
     },
     handletoolsMouseWheel(e) {
+      if (this.activeTool === 'Crosshairs') return
       const { viewportId, wheel } = e.detail
       if (this.isMip) {
         const container = document.getElementById('rotateBar')
@@ -852,6 +862,7 @@ export default {
       this.rotateBarInfo.isMove = false
     },
     rotateBarMousemove(e) {
+      if (this.activeTool === 'Crosshairs') return
       // 滚动旋转
       if (!this.rotateBarInfo.isMove) return
       const container = document.getElementById('rotateBar')
@@ -867,6 +878,7 @@ export default {
       this.rotateBarLeft = x
     },
     rotateBarMousedown(e) {
+      if (this.activeTool === 'Crosshairs') return
       this.rotateBarInfo.initLeft = e.srcElement.offsetLeft
       this.rotateBarInfo.initX = e.clientX
       this.rotateBarInfo.isMove = true
@@ -905,6 +917,7 @@ export default {
       viewport.render()
     },
     clickRotate(e) {
+      if (this.activeTool === 'Crosshairs') return
       // console.log('clickRotate')
       const container = document.getElementById('rotateBar')
       const containerWidth = container.offsetWidth
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 5755b0d0..0187fb52 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
@@ -180,6 +180,11 @@
               @click.prevent="openFusion">
               <svg-icon icon-class="fusion" class="svg-icon" />
             </div>
+            <div :class="['tool-item', activeTool === 'Crosshairs' ? 'tool-item-active' : '']"
+              v-if="readingTool === 2 && isFusion" :title="$t('trials:reading:button:crosshairs')"
+              @click.prevent="setToolActive('Crosshairs')">
+              <svg-icon icon-class="crosshairs" class="svg-icon" />
+            </div>
             <div v-for="tool in tools" :key="tool.toolName"
               :class="['tool-item', readingTaskState === 2 ? 'tool-disabled' : '', activeTool === tool.toolName ? 'tool-item-active' : '']"
               :style="{ cursor: tool.isDisabled ? 'not-allowed' : 'pointer' }"
@@ -349,15 +354,19 @@
                 :style="gridStyle">
                 <div v-for="(v, index) in cellsMax" v-show="index < cells.length" :key="`viewport-fusion-${index}`"
                   :class="['grid-cell', index === activeViewportIndex ? 'cell_active' : '', index === fullScreenIndex ? 'cell-full-screen' : '']"
-                  @dblclick="toggleFullScreen($event, index)" @click="activeViewport(index)">
+                  @dblclick="toggleFullScreen($event, index)" @click="activeViewport(index)"
+                  @mouseenter="hoverFusionViewport(index)" @mouseleave="hoverFusionViewport(-1)">
                   <PetCtViewport :ref="`viewport-fusion-${index}`" :data-viewport-uid="`viewport-fusion-${index}`"
                     :rendering-engine-id="renderingEngineId" :viewport-id="`viewport-fusion-${index}`"
-                    :viewport-index="index" @activeViewport="activeViewport"
+                    :viewport-index="index" :active-tool="activeTool" @activeViewport="activeViewport"
                     @toggleTaskByViewport="toggleTaskByViewport" @previewCD="previewCD"
                     @renderAnnotations="renderAnnotations" @upperRangeChange="upperRangeChange"
                     @contentMouseup="contentMouseup" />
                 </div>
               </div>
+              <div v-if="readingTool === 2" class="fusion-hidden-viewports">
+                <div ref="viewport-fusion-hidden-sag" class="fusion-hidden-viewport" />
+              </div>
             </div>
           </div>
           <!-- 表单 -->
@@ -763,6 +772,7 @@ export default {
 
       isMPR: false,
       volumeToolGroupId: "share-viewport-volume",
+      fusionToolGroupId: "share-viewport-fusion",
       MPRInfo: {
         AXIAL: {
           imageNum: 0
@@ -1396,6 +1406,7 @@ export default {
         const fusionElement2 = this.$refs['viewport-fusion-1'][0].$el
         const fusionElement3 = this.$refs['viewport-fusion-2'][0].$el
         const fusionElement4 = this.$refs['viewport-fusion-3'][0].$el
+        const fusionHiddenSag = this.$refs['viewport-fusion-hidden-sag']
         const arr = [
           {
             viewportId: 'viewport-fusion-0',
@@ -1430,10 +1441,19 @@ export default {
               orientation: Enums.OrientationAxis.CORONAL,
               background: [1, 1, 1]
             }
+          },
+          {
+            viewportId: 'viewport-fusion-hidden-sag',
+            type: ViewportType.ORTHOGRAPHIC,
+            element: fusionHiddenSag,
+            defaultOptions: {
+              orientation: Enums.OrientationAxis.SAGITTAL,
+              background: [1, 1, 1]
+            }
           }
         ]
         viewportInputArray = [...viewportInputArray, ...arr]
-        viewportIds = viewportIds.concat(fusionViewportIds)
+        viewportIds = viewportIds.concat(fusionViewportIds, ['viewport-fusion-hidden-sag'])
       }
       renderingEngine.setViewports(viewportInputArray)
       this.addAnnotationListeners()
@@ -1469,6 +1489,8 @@ export default {
         let toolGroupId = viewportId
         if (volumeViewportIds.includes(viewportId)) {
           toolGroupId = this.volumeToolGroupId
+        } else if (viewportId.startsWith('viewport-fusion-')) {
+          toolGroupId = this.fusionToolGroupId
         }
 
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId) ? ToolGroupManager.getToolGroup(toolGroupId) : ToolGroupManager.createToolGroup(toolGroupId)
@@ -1564,6 +1586,11 @@ export default {
             toolGroup.addTool(CrosshairsTool.toolName, {
               getReferenceLineColor: this.setCrosshairsToolLineColor
             });
+          } else if (toolGroupId === this.fusionToolGroupId) {
+            toolGroup.addTool(CrosshairsTool.toolName, {
+              getReferenceLineColor: this.setCrosshairsToolLineColor,
+              getReferenceLineSlabThicknessControlsOn: (otherViewportId) => otherViewportId !== 'viewport-fusion-3'
+            });
           } else {
             toolGroup.addTool(WindowLevelTool.toolName)
           }
@@ -1606,26 +1633,19 @@ export default {
             getTextLines: this.getEllipticalROIToolTextLines
           })
           toolGroup.addTool(FixedRadiusCircleROITool.toolName, {
-            radius: Number.isFinite(this.taskInfo.CircleRadius) ? this.taskInfo.CircleRadius : 1,
-            getTextLines: this.getCircleROIToolTextLines
-          })
+          radius: Number.isFinite(this.taskInfo.CircleRadius) ? this.taskInfo.CircleRadius : 1,
+          getTextLines: this.getCircleROIToolTextLines
+        })
           toolGroup.addTool(AngleTool.toolName, {
             getTextLines: this.getAngleToolTextLines
           })
           toolGroup.addTool(CobbAngleTool.toolName, {
             getTextLines: this.getCobbAngleToolTextLines
           })
-          if (toolGroupId === 'viewport-fusion-3') {
+          if (viewportId === 'viewport-fusion-3') {
             toolGroup.addTool(VolumeRotateTool.toolName)
-            toolGroup.setToolActive(VolumeRotateTool.toolName, {
-              bindings: [
-                {
-                  mouseButton: MouseBindings.Wheel // mouse wheel
-                }
-              ]
-            })
             toolGroup.addTool(MIPJumpToClickTool.toolName, {
-              targetViewportIds: fusionViewportIds.filter((id) => id !== toolGroupId)
+              targetViewportIds: fusionViewportIds.filter((id) => id !== viewportId)
             })
 
             // Set the initial state of the tools, here we set one tool active on left click.
@@ -2488,22 +2508,61 @@ export default {
       const factor = 10 ** precision
       return (Math.round(num * factor + 0.0000001) / factor).toFixed(precision)
     },
+    getActiveToolGroupId() {
+      if (this.isMPR) return this.volumeToolGroupId
+      if (this.isFusion) return this.fusionToolGroupId
+      return `${this.viewportKey}-${this.activeViewportIndex}`
+    },
+    getCurrentToolGroupIds() {
+      if (this.isMPR) return [this.volumeToolGroupId]
+      if (this.isFusion) return [this.fusionToolGroupId]
+      return [`${this.viewportKey}-0`, `${this.viewportKey}-1`, `${this.viewportKey}-2`, `${this.viewportKey}-3`]
+    },
+    setFusionMipJumpEnabled(enabled) {
+      if (!this.isFusion) return
+      const toolGroup = ToolGroupManager.getToolGroup(this.fusionToolGroupId)
+      if (!toolGroup || !toolGroup.hasTool(MIPJumpToClickTool.toolName)) return
+      if (enabled) {
+        toolGroup.setToolActive(MIPJumpToClickTool.toolName, {
+          bindings: [{ mouseButton: MouseBindings.Primary }]
+        })
+      } else {
+        toolGroup.setToolDisabled(MIPJumpToClickTool.toolName)
+      }
+    },
+    setFusionMipRotateEnabled(enabled) {
+      if (!this.isFusion) return
+      const toolGroup = ToolGroupManager.getToolGroup(this.fusionToolGroupId)
+      if (!toolGroup || !toolGroup.hasTool(VolumeRotateTool.toolName)) return
+      if (enabled) {
+        toolGroup.setToolActive(VolumeRotateTool.toolName, {
+          bindings: [{ mouseButton: MouseBindings.Wheel }]
+        })
+      } else {
+        toolGroup.setToolDisabled(VolumeRotateTool.toolName)
+      }
+    },
     // 激活工具
     setToolActive(toolName) {
       if (this.histogramVisible) return false
-      const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
+      const toolGroupId = this.getActiveToolGroupId()
       const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+      if (!toolGroup) return
       if (this.activeTool === toolName) {
         if (toolName === CrosshairsTool.toolName) {
           toolGroup.setToolDisabled(this.activeTool)
+          this.setFusionMipJumpEnabled(true)
+          this.setFusionMipRotateEnabled(true)
         } else {
           toolGroup.setToolPassive(this.activeTool)
         }
         this.activeTool = ''
       } else {
         if (this.activeTool) {
-          if (toolName === CrosshairsTool.toolName) {
+          if (this.activeTool === CrosshairsTool.toolName) {
             toolGroup.setToolDisabled(this.activeTool)
+            this.setFusionMipJumpEnabled(true)
+            this.setFusionMipRotateEnabled(true)
           } else {
             toolGroup.setToolPassive(this.activeTool)
           }
@@ -2511,9 +2570,56 @@ export default {
         toolGroup.setToolActive(toolName, {
           bindings: [{ mouseButton: MouseBindings.Primary }]
         })
+        if (toolName === CrosshairsTool.toolName) {
+          if (this.isFusion) {
+            const instance = toolGroup.getToolInstance?.(CrosshairsTool.toolName)
+            if (instance && !instance.__fusionSameForPatched) {
+              instance.__fusionSameForPatched = true
+              const original = instance._checkIfViewportsRenderingSameScene?.bind(instance)
+              instance._checkIfViewportsRenderingSameScene = (viewport, otherViewport) => {
+                try {
+                  const a = viewport?.getFrameOfReferenceUID?.()
+                  const b = otherViewport?.getFrameOfReferenceUID?.()
+                  if (a && b && a === b) return true
+                } catch (e) {}
+                return original ? original(viewport, otherViewport) : true
+              }
+            }
+          }
+          this.setFusionMipJumpEnabled(false)
+          this.setFusionMipRotateEnabled(false)
+        }
         this.activeTool = toolName
       }
     },
+    hoverFusionViewport(index) {
+      if (!this.isFusion) return
+      if (this.activeTool === CrosshairsTool.toolName) return
+      const toolGroup = ToolGroupManager.getToolGroup(this.fusionToolGroupId)
+      if (!toolGroup) return
+
+      const isMip = index === 3
+      this.setFusionMipJumpEnabled(isMip)
+      if (isMip) {
+        if (toolGroup.hasTool(StackScrollTool.toolName)) {
+          toolGroup.setToolDisabled(StackScrollTool.toolName)
+        }
+        if (toolGroup.hasTool(VolumeRotateTool.toolName)) {
+          toolGroup.setToolActive(VolumeRotateTool.toolName, {
+            bindings: [{ mouseButton: MouseBindings.Wheel }]
+          })
+        }
+      } else {
+        if (toolGroup.hasTool(VolumeRotateTool.toolName)) {
+          toolGroup.setToolDisabled(VolumeRotateTool.toolName)
+        }
+        if (toolGroup.hasTool(StackScrollTool.toolName)) {
+          toolGroup.setToolActive(StackScrollTool.toolName, {
+            bindings: [{ mouseButton: MouseBindings.Wheel }]
+          })
+        }
+      }
+    },
     // 激活标注工具
     setAnnotateToolActive(toolName) {
       // if (this.readingTaskState === 2) return
@@ -2522,8 +2628,9 @@ export default {
       if (!toolObj || toolObj.isDisabled) return
       const series = this.$refs[`${this.viewportKey}-${this.activeViewportIndex}`][0].series
       if (series && series.TaskInfo.VisitTaskId && series.TaskInfo.VisitTaskId === this.taskInfo.VisitTaskId) {
-        const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
+        const toolGroupId = this.getActiveToolGroupId()
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+        if (!toolGroup) return
         if (this.activeTool === toolName) {
           if (toolName === CrosshairsTool.toolName) {
             toolGroup.setToolDisabled(this.activeTool)
@@ -2554,8 +2661,9 @@ export default {
       if (this.activeTool === toolName) return
       const series = this.$refs[`${this.viewportKey}-${this.activeViewportIndex}`][0].series
       if (series && series.TaskInfo.VisitTaskId && series.TaskInfo.VisitTaskId === this.taskInfo.VisitTaskId) {
-        const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
+        const toolGroupId = this.getActiveToolGroupId()
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+        if (!toolGroup) return
         if (this.activeTool) {
           if (this.activeTool === CrosshairsTool.toolName) {
             toolGroup.setToolDisabled(this.activeTool)
@@ -2574,8 +2682,9 @@ export default {
       if (this.activeTool && this.toolNames.includes(this.activeTool)) {
         const series = this.$refs[`${this.viewportKey}-${this.activeViewportIndex}`][0].series
         if (series && series.TaskInfo.VisitTaskId && series.TaskInfo.VisitTaskId === this.taskInfo.VisitTaskId) {
-          const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
+          const toolGroupId = this.getActiveToolGroupId()
           const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+          if (!toolGroup) return
           if (this.activeTool === CrosshairsTool.toolName) {
             toolGroup.setToolDisabled(this.activeTool)
           } else {
@@ -2591,8 +2700,9 @@ export default {
       this.setToolsPassive()
       const series = this.$refs[`${this.viewportKey}-${this.activeViewportIndex}`][0].series
       if (series && series.TaskInfo.VisitTaskId && series.TaskInfo.VisitTaskId === this.taskInfo.VisitTaskId) {
-        const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
+        const toolGroupId = this.getActiveToolGroupId()
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+        if (!toolGroup) return
         toolGroup.setToolActive(toolName, {
           bindings: [{ mouseButton: MouseBindings.Primary }]
         })
@@ -2601,13 +2711,10 @@ export default {
     },
     setToolsPassive() {
       if (!this.activeTool) return
-      let toolGroupIds = [`${this.viewportKey}-0`, `${this.viewportKey}-1`, `${this.viewportKey}-2`, `${this.viewportKey}-3`]
-      if (this.isMPR) {
-        // toolGroupIds = [`${this.viewportKey}-0`, `${this.viewportKey}-1`, `${this.viewportKey}-2`]
-        toolGroupIds = [this.volumeToolGroupId]
-      }
+      const toolGroupIds = this.getCurrentToolGroupIds()
       toolGroupIds.forEach(toolGroupId => {
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+        if (!toolGroup) return
         if (this.activeTool === CrosshairsTool.toolName) {
           toolGroup.setToolDisabled(this.activeTool)
         } else {
@@ -2618,13 +2725,10 @@ export default {
     },
     setToolEnabled() {
       if (!this.activeTool) return
-      let toolGroupIds = [`${this.viewportKey}-0`, `${this.viewportKey}-1`, `${this.viewportKey}-2`, `${this.viewportKey}-3`]
-      if (this.isMPR) {
-        // toolGroupIds = [`${this.viewportKey}-0`, `${this.viewportKey}-1`, `${this.viewportKey}-2`]
-        toolGroupIds = [this.volumeToolGroupId]
-      }
+      const toolGroupIds = this.getCurrentToolGroupIds()
       toolGroupIds.forEach(toolGroupId => {
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+        if (!toolGroup) return
         toolGroup.setToolEnabled(this.activeTool)
       })
       this.activeTool = ''
@@ -3217,7 +3321,9 @@ export default {
           DicomEvent.$emit('SegmentationLoading', `${this.viewportKey}-${this.activeViewportIndex}`)
         })
       }
-      this.setToolsPassive()
+      if (this.activeTool !== CrosshairsTool.toolName) {
+        this.setToolsPassive()
+      }
     },
     getRelatedSeries(visitTaskInfo, baselineSeries) {
       let obj = {}
@@ -3582,8 +3688,9 @@ export default {
           this.setToolsPassive()
 
         }
-        const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
+        const toolGroupId = this.getActiveToolGroupId()
         const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
+        if (!toolGroup) return
         toolGroup.setToolActive(toolName, {
           bindings: [{ mouseButton: MouseBindings.Primary }]
         })
@@ -3943,6 +4050,7 @@ export default {
         this.$refs[`viewport-fusion-1`][0].setSeriesInfo(ptData, false, { colorMap: false })
         this.$refs[`viewport-fusion-2`][0].setSeriesInfo(fusionData, false, { isFusion: true, colorMap: true })
         this.$refs[`viewport-fusion-3`][0].setSeriesInfo(ptData, false, { isMip: true, colorMap: false })
+        await this.initFusionHiddenSagViewport(pt)
         // this.resetAnnotation = false
         this.$nextTick(() => {
           this.$refs[`colorMap`].init()
@@ -3973,6 +4081,18 @@ export default {
       }
       return false
     },
+    async initFusionHiddenSagViewport(pt) {
+      const ptVolumeId = pt?.SeriesInstanceUid
+      if (!ptVolumeId || !cache.getVolume(ptVolumeId)) return
+      const renderingEngine = getRenderingEngine(this.renderingEngineId)
+      const sagViewport = renderingEngine?.getViewport?.('viewport-fusion-hidden-sag')
+      if (!sagViewport) return
+
+      await sagViewport.setVolumes([{ volumeId: ptVolumeId }])
+      const midIndex = Math.max(0, Math.floor((pt.ImageIds?.length || 1) / 2))
+      await csUtils.jumpToSlice(sagViewport.element, { imageIndex: midIndex })
+      sagViewport.render()
+    },
     async getVolume(serie, isFusion = false) {
       return new Promise(async res => {
         let volumeId = `${isFusion ? 'fusion_' : ''}` + serie.SeriesInstanceUid;
@@ -4463,6 +4583,22 @@ export default {
           position: relative;
         }
 
+        .fusion-hidden-viewports {
+          position: absolute;
+          left: -100000px;
+          top: -100000px;
+          width: 512px;
+          height: 512px;
+          overflow: hidden;
+          opacity: 0;
+          pointer-events: none;
+        }
+
+        .fusion-hidden-viewport {
+          width: 512px;
+          height: 512px;
+        }
+
         .viewports-box {
           display: grid;
           position: absolute;