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 cd3230db..a0fdf9e8 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
@@ -1654,7 +1654,7 @@ export default {
       })
     },
     voiChange(v) {
-      console.log(this.lastUpper, this.hasVoiChanged, v)
+      // console.log(this.lastUpper, this.hasVoiChanged, v)
       if (this.lastUpper === v && this.hasVoiChanged) return;
       this.lastUpper = v;
       this.hasVoiChanged = true;
@@ -1677,27 +1677,49 @@ export default {
         this.$refs.colorMap.changeVoi(v)
       }
     },
+    // async setColorMap(rgbPresetName) {
+    //   this.rgbPresetName = rgbPresetName
+    //   if (this.$refs.FUSION_AXIAL) {
+    //     this.$refs.FUSION_AXIAL.setPreset(this.rgbPresetName)
+    //     this.$refs.FUSION_AXIAL.renderColorBar(this.rgbPresetName)
+    //   }
+
+    //   const viewport = getRenderingEngine(renderingEngineId)?.getViewport('FUSION_AXIAL')
+    //   if (!viewport) return
+
+    //   const actorEntry = viewport.getActors()?.find(e => String(e.uid || '').includes('PT_VOLUME_ID2'))
+    //   if (!actorEntry?.actor) return
+
+    //   const preset = rgbPresetName === 'hsv' ? vtkColorMaps.getPresetByName(rgbPresetName) : getColormap(rgbPresetName)
+    //   const cfun = vtkColorTransferFunction.newInstance()
+    //   const rgbPoints = preset?.RGBPoints
+    //   if (Array.isArray(rgbPoints)) {
+    //     for (let i = 0; i < rgbPoints.length; i += 4) {
+    //       cfun.addRGBPoint(rgbPoints[i], rgbPoints[i + 1], rgbPoints[i + 2], rgbPoints[i + 3])
+    //     }
+    //   }
+    //   cfun.setMappingRange(0, 5)
+    //   actorEntry.actor.getProperty().setRGBTransferFunction(0, cfun)
+
+    //   const ofun = vtkPiecewiseFunction.newInstance()
+    //   ofun.addPoint(0, 0.0)
+    //   ofun.addPoint(0.1, 0.9)
+    //   ofun.addPoint(5, 1.0)
+    //   actorEntry.actor.getProperty().setScalarOpacity(0, ofun)
+
+    //   viewport.render()
+    // },
     async setColorMap(rgbPresetName) {
       this.rgbPresetName = rgbPresetName
-      let viewports = ['FUSION_AXIAL', 'PT_AXIAL', 'PET_MIP_CORONAL']
+      let viewports = ['FUSION_AXIAL']
       viewports.map(v => {
         this.$refs[v] && this.$refs[v].setPreset(this.rgbPresetName)
-        const renderingEngine = getRenderingEngine(renderingEngineId)
-
-        const viewport = (
-          renderingEngine.getViewport(v)
-        )
-
-        if (!viewport) return
+        this.$refs[v] && this.$refs[v].setColorMap(rgbPresetName)
         
-        const volumeId = v === 'FUSION_AXIAL' ? ptVolumeId2 : ptVolumeId
-        viewport.setProperties({ colormap: { name: rgbPresetName } }, volumeId)
-        viewport.render()
       })
     },
     upperRangeChange(v) {
-      if (this.lastUpper === v) return;
-      this.lastUpper = v;
+      if (this.upper === v) return
       this.upper = v;
 
       if (v === 0) {
@@ -1918,17 +1940,24 @@ export default {
       // document.onselectstart = function() { return false }// 解决拖动会选中文字的问题
       // document.ondragstart = function() { return false }
     },
-    setWwwc(v) {
-      // this.changeMapperRange(v.wc, v.ww)
-      const renderingEngine = getRenderingEngine(renderingEngineId)
-      let viewportId = this.activeIndex === 1 ? 'CT_AXIAL' : this.activeIndex === 2 ? 'PT_AXIAL' : this.activeIndex === 3 ? 'FUSION_AXIAL' : 'PET_MIP_CORONAL'
-      const viewport = renderingEngine.getViewport(viewportId)
-      const lower = v.wc - v.ww / 2
-      const upper = v.wc + v.ww / 2 - 1
-      viewport.setProperties({ voiRange: { upper: upper, lower: lower } })
-      viewport.render()
-      this.customWwc.visible = false
-    },
+    // setWwwc(v) {
+    //   // this.changeMapperRange(v.wc, v.ww)
+    //   const renderingEngine = getRenderingEngine(renderingEngineId)
+    //   let viewportId = this.activeIndex === 1 ? 'CT_AXIAL' : this.activeIndex === 2 ? 'PT_AXIAL' : this.activeIndex === 3 ? 'FUSION_AXIAL' : 'PET_MIP_CORONAL'
+    //   const viewport = renderingEngine.getViewport(viewportId)
+    //   const lower = v.wc - v.ww / 2
+    //   const upper = v.wc + v.ww / 2 - 1
+    //   viewport.setProperties({ voiRange: { upper: upper, lower: lower } })
+    //   viewport.render()
+    //   if (viewportId !== 'CT_AXIAL') {
+    //     const nextUpper = Math.round(upper)
+    //     this.upper = nextUpper
+    //     if (this.$refs.colorMap) {
+    //       this.$refs.colorMap.changeVoi(nextUpper)
+    //     }
+    //   }
+    //   this.customWwc.visible = false
+    // },
     changeMapperRange(wc, ww) {
       var lower = wc - ww / 2.0
       var upper = wc + ww / 2.0
diff --git a/src/views/trials/trials-panel/reading/dicoms/components/Fusion/Viewport.vue b/src/views/trials/trials-panel/reading/dicoms/components/Fusion/Viewport.vue
index 3fee5373..2e38d02c 100644
--- a/src/views/trials/trials-panel/reading/dicoms/components/Fusion/Viewport.vue
+++ b/src/views/trials/trials-panel/reading/dicoms/components/Fusion/Viewport.vue
@@ -208,7 +208,6 @@ export default {
   mounted() {
     const digitPlaces = parseInt(this.$route.query.digitPlaces)
     this.digitPlaces = digitPlaces === -1 ? 2 : digitPlaces
-    console.log(toolsUtilities)
     this.subjectCode = this.$route.query.subjectCode
     var element = document.getElementById(`viewport${this.index}`)
     element.addEventListener(VOLUME_NEW_IMAGE, this.handleVolumeNewImage)
@@ -346,8 +345,8 @@ export default {
           upper
         )
         this.imageInfo.wwwc = `${Math.round(windowWidth)}/${Math.round(windowCenter)}`
-        // 当为PT或融合视口时，触发外部联动
-        if (this.index !== 1 && this.index !== 4) {
+        // 当为PT或融合视口或MIP视口时，触发外部联动 (排除纯CT视口)
+        if (this.index !== 1) {
           this.$emit('upperRangeChange', Math.round(upper))
         }
       }
@@ -579,6 +578,13 @@ export default {
       ctx.fillStyle = gradient
       ctx.fillRect(0, 0, rectWidth, rectHeight)
     },
+    setColorMap(presetName) {
+      const renderingEngine = getRenderingEngine(this.renderingEngineId)
+      const viewport = renderingEngine.getViewport(this.viewportId)
+      let volumeId = `cornerstoneStreamingImageVolume:PT_VOLUME_ID`
+      viewport.setProperties({ colormap: { name: presetName } }, volumeId)
+      viewport.render()
+    },
     setWwWc() {
       let properties = viewport.getProperties()
       if (this.index === 3) {
@@ -594,8 +600,8 @@ export default {
           upper
         )
         this.imageInfo.wwwc = `${Math.round(windowWidth)}/${Math.round(windowCenter)}`
-        // 当为PT或融合视口时，触发外部联动
-        if (this.index !== 1 && this.index !== 4) {
+        // 当为PT或融合视口或MIP视口时，触发外部联动 (排除纯CT视口)
+        if (this.index !== 1) {
           this.$emit('upperRangeChange', Math.round(upper))
         }
       }
diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
index dbb838bd..db172336 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
@@ -757,7 +757,9 @@ export default {
           },
         },
       },
-      fusionOverlayModality: null
+      fusionOverlayModality: null,
+      lastUpper: null,
+      hasFusionUpperInitialized: false
     }
   },
   computed: {
@@ -3730,11 +3732,14 @@ export default {
       return pairs.map((p) => p.imageId);
     },
     upperRangeChange(upper) {
+      if (!this.hasFusionUpperInitialized) {
+        if (!upper) return
+        this.hasFusionUpperInitialized = true
+      }
       if (this.lastUpper === upper) return;
       this.lastUpper = upper;
       if (this.$refs.colorMap) {
-        this.$refs.colorMap.upper = upper
-        this.$refs.colorMap.upperRangeChange(upper)
+        this.$refs.colorMap.changeVoi(upper)
       }
       this.voiChange(upper)
     },
diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/colorMap.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/colorMap.vue
index 0660843c..703d6b50 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/colorMap.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/colorMap.vue
@@ -74,6 +74,7 @@ export default {
             rgbPresetName: 'siemens',
             range: 40,
             upper: 6,
+            isSlideMoving: false,
         }
     },
     mounted() {
@@ -86,9 +87,24 @@ export default {
             this.renderColorMaps()
             this.upperRangeChange(this.range)
             this.initSlider()
+            this.syncSliderPosition()
         })
     },
     methods: {
+        syncSliderPosition(retry = 0) {
+            var sliderBox = document.getElementById('sliderBox')
+            var container = document.getElementById('colorBarCanvas')
+            if (!sliderBox || !container) return
+
+            var maxLeft = container.clientWidth - sliderBox.clientWidth
+            if (maxLeft <= 0) {
+                if (retry < 30) {
+                    requestAnimationFrame(() => this.syncSliderPosition(retry + 1))
+                }
+                return
+            }
+            this.updateSliderPosition()
+        },
         renderColorMaps() {
             this.createColorBar(this.rgbPresetName, 'colorBarCanvas', 256, 15)
             this.colorMaps.forEach((e, index) => {
@@ -101,20 +117,25 @@ export default {
         changeVoi(v) {
             // 被外部组件调窗同步时调用
             if (v === this.upper) return
-            
-            // 如果传入的阈值超过了当前输入框设置的最大值，更新 range 为传入值，滑块自动到最右侧
-            if (v > this.range) {
-                this.range = v
-                this.upper = v
-            } else {
-                this.upper = v
+
+            var range = Number(this.range) || 0
+            var upper = Number(v) || 0
+            if (range <= 0) {
+                upper = 0
+            } else if (upper > range) {
+                upper = range
+            } else if (upper < 0) {
+                upper = 0
             }
-            this.updateSliderPosition()
+            this.upper = upper
+            this.syncSliderPosition()
         },
         initSlider() {
             var slider = document.getElementById('slider')
             var sliderBox = document.getElementById('sliderBox')
             var container = document.getElementById('colorBarCanvas')
+            if (!slider || !sliderBox || !container) return
+
             slider.addEventListener('mousedown', () => {
                 this.isSlideMoving = true
             })
@@ -123,6 +144,8 @@ export default {
                     var containerWidth = container.clientWidth
                     var sliderWidth = sliderBox.clientWidth
                     var maxLeft = containerWidth - sliderWidth
+                    if (maxLeft <= 0) return
+
                     var left = e.clientX - container.getBoundingClientRect().left
                     var position = null
                     position = left
@@ -136,10 +159,12 @@ export default {
 
                     slider.style.left = left + 'px'
                     var positionValue = document.getElementById('slider-position')
-                    var upper = this.range
+                    var upper = Number(this.range) || 0
                     position = parseInt((position / maxLeft) * upper)
+                    if (position > upper) position = upper
+                    if (position < 0) position = 0
                     if (this.modality === 'NM') {
-                        positionValue.textContent = Math.round((position / upper) * 100) + '%'
+                        positionValue.textContent = upper > 0 ? Math.round((position / upper) * 100) + '%' : '0%'
                     } else {
                         positionValue.textContent = position
                     }
@@ -153,13 +178,28 @@ export default {
         },
         updateSliderPosition() {
             var sliderBox = document.getElementById('sliderBox')
-            var colorBarContainer = document.getElementById('colorBar')
-            if (!sliderBox || !colorBarContainer) return
+            var container = document.getElementById('colorBarCanvas')
+            if (!sliderBox || !container) return
 
-            var containerWidth = colorBarContainer.clientWidth
+            var containerWidth = container.clientWidth
             var sliderWidth = sliderBox.clientWidth
             var maxLeft = containerWidth - sliderWidth
-            var left = (this.upper / this.range) * maxLeft
+            if (maxLeft <= 0) return
+
+            var range = Number(this.range) || 0
+            var upper = Number(this.upper) || 0
+            if (range <= 0) {
+                upper = 0
+            } else if (upper > range) {
+                upper = range
+            } else if (upper < 0) {
+                upper = 0
+            }
+            if (upper !== this.upper) {
+                this.upper = upper
+            }
+
+            var left = range > 0 ? (upper / range) * maxLeft : 0
             if (left < 0) {
                 left = 0
             } else if (left >= maxLeft) {
@@ -167,40 +207,32 @@ export default {
             }
             var slider = document.getElementById('slider')
             if (slider) {
-                slider.style.left = left + 'px'
+                slider.style.left = (left + 6) + 'px'
             }
             var positionValue = document.getElementById('slider-position')
             if (positionValue) {
                 if (this.modality === 'NM') {
-                    positionValue.textContent = Math.round((this.upper / this.range) * 100) + '%'
+                    positionValue.textContent = range > 0 ? Math.round((upper / range) * 100) + '%' : '0%'
                 } else {
-                    positionValue.textContent = this.upper
+                    positionValue.textContent = upper
                 }
             }
         },
         upperRangeChange(v) {
-            if (v === 0 || v < this.upper) {
+            if (this.upper === v) return
+            var nextRange = Number(v) || 0
+            if (nextRange <= 0) {
+                this.upper = 0
+                this.updateSliderPosition()
+                this.voiChange(0)
                 return
             }
-            var sliderBox = document.getElementById('sliderBox')
-            var container = document.getElementById('colorBarCanvas')
-            var containerWidth = container.clientWidth
-            var sliderWidth = sliderBox.clientWidth
-            var maxLeft = containerWidth - sliderWidth
-            var left = (this.upper / this.range) * maxLeft
-            if (left < 0) {
-                left = 6
-            } else if (left >= maxLeft) {
-                left = maxLeft + 6
-            }
-            var slider = document.getElementById('slider')
-            slider.style.left = left + 'px'
-            var positionValue = document.getElementById('slider-position')
-            if (this.modality === 'NM') {
-                positionValue.textContent = Math.round((this.upper / this.range) * 100) + '%'
-            } else {
-                positionValue.textContent = this.upper
+            this.range = nextRange
+            if (this.upper > nextRange) {
+                this.upper = nextRange
+                this.voiChange(this.upper)
             }
+            this.syncSliderPosition()
         },
         createColorBar(rgbPresetName, elId, width, height) {
             var colorMap = null
@@ -247,6 +279,7 @@ export default {
         init() {
             this.createColorBar(this.rgbPresetName, 'colorBarCanvas', 256, 15)
             this.$emit("setColorMap", this.rgbPresetName)
+            this.syncSliderPosition()
         }
     }
 }