diff --git a/src/icons/svg/exit_mpr.svg b/src/icons/svg/exit_mpr.svg
new file mode 100644
index 00000000..35fc2d38
--- /dev/null
+++ b/src/icons/svg/exit_mpr.svg
@@ -0,0 +1 @@
+<?xml version="1.0" standalone="no"?><!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"><svg t="1777014169186" class="icon" viewBox="0 0 1024 1024" version="1.1" xmlns="http://www.w3.org/2000/svg" p-id="4736" xmlns:xlink="http://www.w3.org/1999/xlink" width="200" height="200"><path d="M1024 739.560727V1024H739.560727v-84.898909h199.540364v-199.540364H1024z m-939.101091 0v199.540364h199.540364V1024H0V739.560727h84.898909zM824.878545 199.121455v625.75709H199.121455V199.121455h625.75709z m-85.317818 85.317818H284.439273v455.121454h455.121454V284.439273zM1024 0v284.439273h-84.898909V84.898909h-199.540364V0H1024zM284.439273 0v84.898909H84.898909v199.540364H0V0h284.439273z" fill="#e6e6e6" p-id="4737"></path></svg>
\ No newline at end of file
diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/MPRViewport.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/MPRViewport.vue
index 370deaac..5f1a9124 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/MPRViewport.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/MPRViewport.vue
@@ -40,10 +40,10 @@
         <div v-if="series" class="right-bottom-text">
             <div v-show="imageInfo.location">Location: {{
                 `${Number(imageInfo.location).toFixed(digitPlaces)} mm`
-            }}</div>
+                }}</div>
             <div v-show="imageInfo.sliceThickness">Slice Thickness: {{
                 `${Number(imageInfo.sliceThickness).toFixed(digitPlaces)} mm`
-            }}</div>
+                }}</div>
             <div v-show="imageInfo.wwwc">WW/WL: {{ imageInfo.wwwc }}</div>
         </div>
         <div class="orientation-top">
@@ -512,7 +512,7 @@ export default {
             const renderingEngine = getRenderingEngine(this.renderingEngineId)
             const viewport = renderingEngine.getViewport(this.viewportId)
             const currentImageIdIndex = viewport.getCurrentImageIdIndex()
-            const numImages = viewport.getImageIds().length
+            const numImages = this.imageInfo.total
             let newImageIdIndex = null
             if (type === 0) {
                 newImageIdIndex = 0
@@ -628,6 +628,7 @@ export default {
                 let volume = cache.getVolume(this.volumeId)
                 // console.log(volume, 'volume')
                 if (this.series.orientation === 'AXIAL' && this.series.curIndex) return this.setFullScreen(this.series.curIndex)
+                console.log(this.series.orientation, this.series.curIndex)
                 let index = this.series.orientation === 'AXIAL' ? Math.ceil((volume._imageIds.length - 1) / 2) - 1 : Math.ceil((volume.dimensions[0]) / 2) - 1
                 this.setFullScreen(index)
             } catch (e) {
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 70f042bc..15791bf2 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/ReadPage.vue
@@ -162,9 +162,14 @@
             </div>
             <!-- MPR -->
             <div class="tool-item" :title="`${$t('trials:reading:button:mpr')}`" @click.prevent="openMPRViewport()"
-              v-if="(criterionType === 0 && readingTool === 0) || this.readingTool === 3">
+              v-if="((criterionType === 0 && readingTool === 0) || this.readingTool === 3) && !isMPR">
               <svg-icon icon-class="mpr" class="svg-icon" style="transform: rotate(180deg);" />
             </div>
+            <!-- 退出MPR -->
+            <div class="tool-item" :title="`${$t('trials:reading:button:exit_mpr')}`" @click.prevent="openMPRViewport()"
+              v-if="((criterionType === 0 && readingTool === 0) || this.readingTool === 3) && isMPR">
+              <svg-icon icon-class="exit_mpr" class="svg-icon" style="transform: rotate(180deg);" />
+            </div>
             <!-- 直方图 -->
             <div class="tool-item" :title="`${$t('trials:reading:button:histogram')}`" @click.prevent="openHistogram"
               v-if="this.readingTool === 3">
@@ -477,7 +482,7 @@
         </el-tab-pane>
         <!-- 其他 -->
         <el-tab-pane :label="$t('trials:reading:tab:others')" name="3">
-          <Others v-if="personalConfigDialog.activeName === '3'" :imageToolType="1"/>
+          <Others v-if="personalConfigDialog.activeName === '3'" :imageToolType="1" />
         </el-tab-pane>
       </el-tabs>
 
@@ -1019,6 +1024,15 @@ export default {
       // this.$refs.surfaceViewport.setSeriesInfo(obj)
     },
     async openHistogram() {
+      const renderingEngine = getRenderingEngine(this.renderingEngineId)
+      let viewportId = `${this.viewportKey}-${this.activeViewportIndex}`
+      const viewport = renderingEngine.getViewport(viewportId)
+      let imageIds = viewport.getImageIds(this.$refs[viewportId][0].volumeId)
+      let imageId = imageIds[0]
+      const imagePixelModule = metaData.get('imagePixelModule', imageId);
+      const photometricInterpretation = imagePixelModule?.photometricInterpretation;
+      console.log(photometricInterpretation, 'photometricInterpretation')
+      if (photometricInterpretation && photometricInterpretation !== 'MONOCHROME1' && photometricInterpretation !== 'MONOCHROME2') return this.$confirm(this.$t('trials:histogram:confirm:photometricInterpretationNotSupported'))
       this.histogramVisible = true
       this.setToolsPassive()
       this.$refs.histogram.init()
@@ -2304,7 +2318,7 @@ export default {
         '#ffd10a',
         '#b6d634',
       ]
-      
+
       if (viewportId === 'viewport-fusion-hidden-sag') {
         return colors[colors.length - 1]
       } else {
@@ -4100,7 +4114,10 @@ export default {
     },
     async openMPRViewport(data = null) {
       return new Promise(async (resolve, reject) => {
+        this.setToolsPassive()
         if (this.isMPR) {
+          this.activeSeries(this.$refs[`viewport-MPR-0`][0].series)
+          resolve(false)
           if (!data) return resolve(false)
           let viewportSeries = this.$refs[`viewport-MPR-0`][0].series
           if (data && viewportSeries.SeriesInstanceUid === data.SeriesInstanceUid) return resolve(true)
@@ -4132,9 +4149,12 @@ export default {
         await this.getVolume(series)
         this.loading = false
         this.loadingText = null
+        delete series.orientation
+        delete series.isLocation
         this.$refs[`viewport-MPR-0`][0].setSeriesInfo(Object.assign({ orientation: 'AXIAL', isLocation: data && this.activeViewportIndex === 0 }, series))
         this.$refs[`viewport-MPR-1`][0].setSeriesInfo(Object.assign({ orientation: 'SAGITTAL', isLocation: data && this.activeViewportIndex === 1 }, series))
         this.$refs[`viewport-MPR-2`][0].setSeriesInfo(Object.assign({ orientation: 'CORONAL', isLocation: data && this.activeViewportIndex === 2 }, series))
+        this.setToolActive('Crosshairs')
         resolve(false)
       })
 
diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/Segmentations.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/Segmentations.vue
index 36b2b14d..281c4e93 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/Segmentations.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/Segmentations.vue
@@ -1,5 +1,9 @@
 <template>
     <div class="Segmentations" v-loading="loading">
+        <h3 style="color: #fff;margin: 0;padding: 15px 10px;">
+            <span>{{ series.TaskInfo.SubjectCode }} </span>
+            <span style="margin-left:5px;">{{ series.TaskInfo.TaskBlindName }}</span>
+        </h3>
         <el-collapse v-model="activeNames">
             <el-collapse-item name="tools">
                 <template slot="title">
@@ -8,24 +12,24 @@
                 <div class="tool-frame">
                     <div :title="$t('trials:Segmentations:tools:contour')"
                         :class="['tool-item', activeTool === 'LabelMapEditWithContour' && segmentList.length > 0 ? 'tool-item-active' : '']"
-                        :style="{ cursor: segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
+                        :style="{ cursor: isMPR || segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
                         @click.prevent="setToolActive('LabelMapEditWithContour')">
                         <svg-icon icon-class="contour" class="svg-icon" />
                     </div>
                     <div :title="$t('trials:Segmentations:tools:thresholecircle')"
                         :class="['tool-item', ThresholdTools.includes(activeTool) && segmentList.length > 0 ? 'tool-item-active' : '']"
-                        :style="{ cursor: segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
+                        :style="{ cursor: isMPR || segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
                         @click.prevent="initThreshold">
                         <svg-icon icon-class="thresholecircle" class="svg-icon" />
                     </div>
                     <div :title="$t('trials:Segmentations:tools:circularbrush')"
                         :class="['tool-item', activeTool === 'CircularBrush' && segmentList.length > 0 ? 'tool-item-active' : '']"
-                        :style="{ cursor: segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
+                        :style="{ cursor: isMPR || segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
                         @click.prevent="setToolActive('CircularBrush')">
                         <svg-icon icon-class="circularbrush" class="svg-icon" />
                     </div>
                     <div :class="['tool-item', activeTool === 'CircularEraser' && segmentList.length > 0 ? 'tool-item-active' : '']"
-                        :style="{ cursor: segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
+                        :style="{ cursor: isMPR || segmentList.length <= 0 || (curSegment && curSegment.lock) || ['viewport-MPR-1', 'viewport-MPR-2'].includes(`${viewportKey}-${activeViewportIndex}`) ? 'not-allowed' : 'pointer' }"
                         :title="$t('trials:Segmentations:tools:Eraser')"
                         @click.prevent="setToolActive('CircularEraser')">
                         <svg-icon icon-class="clear" class="svg-icon" />
@@ -202,7 +206,8 @@
                                     <template v-if="item.stats">
                                         <div v-for="k in statsKey" :key="k" class="statsBox">
                                             <span>{{ k }}</span>
-                                            <span v-if="item.stats[k]">{{ JSON.stringify(item.stats[k].value) !== 'null'  ?
+                                            <span v-if="item.stats[k]">{{ JSON.stringify(item.stats[k].value) !== 'null'
+                                                ?
                                                 Number(item.stats[k].value).toFixed(2) : null
                                             }}<i>{{ item.stats[k].unit }}</i></span>
                                         </div>
@@ -494,11 +499,11 @@ export default {
             this.popoverId = `popover-${item.segmentationId}_${item.segmentIndex}`
         },
         initThreshold() {
+            if (this.isMPR) return false
             if (!this.ThresholdTools.includes(this.activeTool)) {
                 this.setToolActive(this.ThresholdTools[0])
                 this.thresholdType = this.ThresholdTools[0]
             }
-
         },
         createSegmentConfiguration(segmentIndex, segmentationId, otherSegments) {
             const containedSegmentIndices = otherSegments
@@ -618,6 +623,7 @@ export default {
             // if (!this.series.TaskInfo || this.series.TaskInfo.VisitTaskId !== this.visitInfo.VisitTaskId) return false
             if (this.segmentList.length <= 0) return false
             if (this.curSegment.lock) return false
+            if (this.isMPR) return false
             if (this.histogramVisible && !this.ThresholdTools.includes(toolName)) return false
             if (['viewport-MPR-1', 'viewport-MPR-2'].includes(`${this.viewportKey}-${this.activeViewportIndex}`)) return false
             const toolGroupId = this.isMPR ? this.volumeToolGroupId : `${this.viewportKey}-${this.activeViewportIndex}`
diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/VolumeViewport.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/VolumeViewport.vue
index 9c740f1a..6bdc7b02 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/VolumeViewport.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/VolumeViewport.vue
@@ -59,10 +59,10 @@
         <div v-if="series" class="right-bottom-text">
             <div v-show="imageInfo.location">Location: {{
                 `${Number(imageInfo.location).toFixed(digitPlaces)} mm`
-            }}</div>
+                }}</div>
             <div v-show="imageInfo.sliceThickness">Slice Thickness: {{
                 `${Number(imageInfo.sliceThickness).toFixed(digitPlaces)} mm`
-            }}</div>
+                }}</div>
             <div v-show="imageInfo.wwwc">WW/WL: {{ imageInfo.wwwc }}</div>
         </div>
         <div class="orientation-top">
@@ -386,6 +386,7 @@ export default {
             const { detail } = e
             delete this.series.segment
             this.series.SliceIndex = detail.imageIndex
+            console.log(detail.imageIndex, 'idenx')
             this.sliderInfo.height = detail.imageIndex * 100 / detail.numberOfSlices
             const renderingEngine = getRenderingEngine(this.renderingEngineId)
             const viewport = renderingEngine.getViewport(this.viewportId)
@@ -441,7 +442,7 @@ export default {
                 )
                 csUtils.jumpToSlice(viewport.element, { imageIndex: index })
                 viewport.render()
-            })
+            }, 100)
         },
         voiModified(e) {
             const renderingEngine = getRenderingEngine(this.renderingEngineId)
diff --git a/src/views/trials/trials-panel/reading/dicoms3D/components/histogram.vue b/src/views/trials/trials-panel/reading/dicoms3D/components/histogram.vue
index ee39cffe..7653d6b9 100644
--- a/src/views/trials/trials-panel/reading/dicoms3D/components/histogram.vue
+++ b/src/views/trials/trials-panel/reading/dicoms3D/components/histogram.vue
@@ -18,6 +18,14 @@
                         @click.prevent="setToolActive('histogram_PlanarFreehandROI')">
                         <svg-icon icon-class="polygon" class="svg-icon" />
                     </div>
+                    <div :class="['tool-item']" :title="$t('trials:histogram:button:bgopen')"
+                        @click.prevent="showDefaultData(false)" v-if="isNeedDefault">
+                        <svg-icon icon-class="eye-open" class="svg-icon" />
+                    </div>
+                    <div :class="['tool-item']" :title="$t('trials:histogram:button:bgclose')"
+                        @click.prevent="showDefaultData(true)" v-else>
+                        <svg-icon icon-class="eye" class="svg-icon" />
+                    </div>
                 </div>
                 <div class="title">{{ $t("trials:histogram:title:histogram") }}</div>
                 <i class="el-icon-circle-close closeBtn" @click.stop="close"></i>
@@ -115,13 +123,18 @@ export default {
                 '#fb628b',
             ],
             colors: [],
-            seriesData: {}
+            seriesData: {},
+            isNeedDefault: true
         }
     },
     mounted() {
         // this.initChart()
     },
     methods: {
+        async showDefaultData(f) {
+            this.isNeedDefault = f
+            this.initChart()
+        },
         setToolActive(toolName) {
             const toolGroupId = `${this.viewportKey}-${this.activeViewportIndex}`
             const toolGroup = ToolGroupManager.getToolGroup(toolGroupId)
@@ -206,8 +219,9 @@ export default {
             }
             let seriesData = []
             Object.keys(this.seriesData).forEach(key => {
-                seriesData.push(this.seriesData[key])
+                if (key !== 'default' || this.isNeedDefault) seriesData.push(this.seriesData[key])
             })
+            this.chart.clear();
             const option = {
                 useUTC: true,
                 title: {