cornerstone 库地址
需要用到的依赖库,可 npm 可自行加入项目public 文件夹中,这里提供文件下载
点此下载 密码: tcg3
注意(坑)
cornerstoneWADOImageLoader.js 文件中需要自行修改 path 路径(注意:是绝对路径哦),大概在 1750 行。当时卡了好久。
var defaultConfig = {
maxWebWorkers: navigator.hardwareConcurrency || 1,
startWebWorkersOnDemand: true,
webWorkerPath: '/models/js/cornerstoneWADOImageLoaderWebWorker.js',//此路径需要自行修改
webWorkerTaskPaths: [],
taskConfiguration: {
decodeTask: {
loadCodecsOnStartup: true,
initializeCodecsOnStartup: false,
codecsPath: '/models/js/cornerstoneWADOImageLoaderCodecs.js',//此路径需要自行修改
usePDFJS: false,
strict: options.strict
}
}
};
写在前面
我只介绍了 cornerstone 的一些基本用法,具体如何在项目中应用,还是要灵活使用,例如我在项目中使用是先通过递归来缓存了所有的图像再逐个展示,节省了加载的时间;通过算法分析的结节坐标信息在图像上绘制结节等。如果需要帮助可留言。码字不易,研究不易,如需转载请注明出处。
准备工作完毕,开始引入组件中
/*
* 需要安装的插件
* npm install --save dicom-parser //这个需要安装
*/
// import Hammer from 'hammerjs';//移动端手势插件 npm install hammerjs --save //选用,不需要移动端可不用
import * as cornerstone from '../../public/models/js/cornerstone';
import * as cornerstoneTools from '../../public/models/js/cornerstoneTools.js';
import * as cornerstoneWADOImageLoader from '../../public/models/js/cornerstoneWADOImageLoader';
/*
* cornerstoneMath.min.js文件 import 始终报错,无奈,最终在 index.html中加入解决,原因未知,知道的大佬可以告知一下
* <script src="./models/js/cornerstoneMath.min.js"></script>
*/
cornerstoneTools.external.cornerstone = cornerstone;
// cornerstoneTools.external.Hammer = Hammer;
cornerstoneTools.external.cornerstoneMath = cornerstoneMath;
cornerstoneWADOImageLoader.external.cornerstone = cornerstone;
cornerstoneWADOImageLoader.external.cornerstoneMath = cornerstoneMath;
初始化
<template>
<div id="DICOM" ref='dicom_canvas'></div>
</template>
......
init(){
let element=this.$refs.dicom_canvas;//获取 dicom 元素节点
cornerstone.enable(element);//启用节点
window.addEventListener('resize',function(e){//自适应窗口
cornerstone.resize(element,true)
})
}
载入影像数据
start(){
cornerstone.loadAndCacheImage('http:XXXXXXXX.dcm').then((image)=>{//加载并缓存数据
cornerstone.displayImage(element,image)//展示 dicom,参数 1:element 元素,参数 2:image
this.getImageInfo(image);//获取图片信息
}).catch((err)=>console.log(err))
}
cornerstoneimagerendered事件(重要!)
每当图像被cornerstone重新绘制时,将发出CornerstoneImageRendered事件调用。这个事件包括可以使用HTML5 canvas上下文(例如几何图形或文本)在图像上绘制的信息。你也可以更新HTML覆盖与各种视口属性,如窗口宽度,窗口级别和缩放。
......
element.addEventListener('cornerstoneimagerendered',function(e){
let eventData=e.detail;
this.getViewPort(eventData);//获取当前图片视口信息
})
getViewPort(eventData){
this.imageInfo.windowWidth=Math.round(eventData.viewport.voi.windowWidth);//窗宽
this.imageInfo.windowCenter=Math.round(eventData.viewport.voi.windowCenter);//窗位
this.imageInfo.scale=parseInt(10 * eventData.viewport.scale);//缩放等级
}
getImageInfo(image){
this.imageInfo.seriesNumber=image.data.string('x00200011');//图像序列号
this.imageInfo.imageNum=image.data.string('x00200013');//图像位置
this.imageInfo.imageDate=image.data.string("x00080021");//拍摄日期
this.imageInfo.sliceThickness=image.data.string('x00180050');//层厚
this.imageInfo.patientId=image.data.string('x00100020');//病理号
// 判断窗宽窗位是否合法
this.pixelR = image.data.uint16('x00280103');
this.heightBit = image.data.uint16('x00280102') || '';
// 病人基本信息
this.patientName = image.data.string('x00100010');
this.patientBirthDate = image.data.string('x00100030');
this.patientID = image.data.string('x00100020');
this.patientGender = image.data.string('x00100040');
this.sID = image.data.string('x00200011');
// 像素间距
this.pixelSpacing = image.data.string('x00280030');
this.imagePixelSpacing = image.data.string('x00181164') || '';
this.rowPixelSpacing = image.rowPixelSpacing;
// 放射放大系数
this.magnification = Number(image.data.string('x00181114'));
// 放射源到面板的距离
this.sourceTOdetector = image.data.string('x00181110');
// 放射源到病人的距离
this.sourceTOpatient = image.data.string('x00181111');
//this.modalityLUT = cornerstone.metaData.get('modalityLutModule', image.imageId).modalityLUTSequence;
this.voiContent = cornerstone.metaData.get('voiLutModule', image.imageId);
// 斜率截距
this.rescaleIntercept = Number(image.data.string('x00281052'));
this.rescaleSlope = Number(image.data.string('x00281053'));
}
cornerstoneTools (工具)
// 启用工具
/*
数字:1 代表鼠标左键;2 代表鼠标中键;4 代表鼠标右键
可逐一试验功能
*/
cornerstoneTools.mouseInput.enable(this.element);//启动鼠标按下事件
enableAllTools() {
cornerstoneTools.wwwc.activate(element);
cornerstoneTools.pan.activate(element, 2);
cornerstoneTools.zoom.activate(element, 1);
cornerstoneTools.probe.activate(element, 1);
cornerstoneTools.length.activate(element, 1);
cornerstoneTools.ellipticalRoi.activate(element, 1);
cornerstoneTools.rectangleRoi.activate(element, 1);
cornerstoneTools.angle.activate(element, 1);
cornerstoneTools.highlight.activate(element, 1);
cornerstoneTools.freehand.activate(element, 1);
cornerstoneTools.stackScroll.activate(element);
cornerstoneTools.arrowAnnotate.activate(element, 1);
cornerstoneTools.freehand.activate(element, 1);
// touch
cornerstoneTools.wwwcTouchDrag.deactivate(element);
cornerstoneTools.probeTouch.deactivate(element);
cornerstoneTools.panTouchDrag.deactivate(element);
cornerstoneTools.zoomTouchDrag.deactivate(element);
cornerstoneTools.lengthTouch.deactivate(element);
cornerstoneTools.ellipticalRoiTouch.deactivate(element);
cornerstoneTools.rectangleRoiTouch.deactivate(element);
cornerstoneTools.angleTouch.deactivate(element);
cornerstoneTools.stackScrollTouchDrag.deactivate(element);
cornerstoneTools.arrowAnnotateTouch.deactivate(element);
cornerstoneTools.rotateTouchDrag.deactivate(element);
cornerstoneTools.rotateTouch.disable(element);
}
// 停用工具 // before making a new tool active
disableAllTools() {
cornerstoneTools.wwwc.disable(element);
cornerstoneTools.pan.deactivate(element, 2);
cornerstoneTools.zoom.deactivate(element, 1);
cornerstoneTools.probe.deactivate(element, 1);
cornerstoneTools.length.deactivate(element, 1);
cornerstoneTools.ellipticalRoi.deactivate(element, 1);
cornerstoneTools.rectangleRoi.deactivate(element, 1);
cornerstoneTools.angle.deactivate(element, 1);
cornerstoneTools.highlight.deactivate(element, 1);
cornerstoneTools.freehand.deactivate(element, 1);
cornerstoneTools.stackScroll.deactivate(element);
cornerstoneTools.arrowAnnotate.deactivate(element, 1);
cornerstoneTools.freehand.deactivate(element, 1);
// touch
cornerstoneTools.wwwcTouchDrag.deactivate(element);
cornerstoneTools.probeTouch.deactivate(element);
cornerstoneTools.panTouchDrag.deactivate(element);
cornerstoneTools.zoomTouchDrag.deactivate(element);
cornerstoneTools.lengthTouch.deactivate(element);
cornerstoneTools.ellipticalRoiTouch.deactivate(element);
cornerstoneTools.rectangleRoiTouch.deactivate(element);
cornerstoneTools.angleTouch.deactivate(element);
cornerstoneTools.stackScrollTouchDrag.deactivate(element);
cornerstoneTools.arrowAnnotateTouch.deactivate(element);
cornerstoneTools.rotateTouchDrag.deactivate(element);
cornerstoneTools.rotateTouch.disable(element);
}
改变窗宽窗位
windowChange(index){
/*
* index=1 ww:default,wl:default
* index=2 ww:1500,wl:-450
* index=3 ww:250,wl:30
* index=4 ww:1000,wl:250
* index=5 ww:300,wl:40
*/
let viewportDefault = cornerstone.getDefaultViewportForImage(element, image);//获取当前图像默认的窗宽窗位
// console.log(viewportDefault.voi.windowWidth,viewportDefault.voi.windowCenter)
let viewport = cornerstone.getViewport(this.element);
viewport.voiLUT = undefined;
if(index==1){
viewport.voi.windowWidth = viewportDefault.voi.windowWidth;
viewport.voi.windowCenter = viewportDefault.voi.windowCenter;
}else if(index==2){
viewport.voi.windowWidth = 1500;
viewport.voi.windowCenter = -450;
}else if(index==3){
viewport.voi.windowWidth = 250;
viewport.voi.windowCenter = 30;
}else if(index==4){
viewport.voi.windowWidth = 1000;
viewport.voi.windowCenter = 250;
}else if(index==5){
viewport.voi.windowWidth = 300;
viewport.voi.windowCenter = 40;
}
cornerstone.setViewport(this.element, viewport);//调节窗宽窗位
},
鼠标滚轮切换图像
/*鼠标滚轮事件 */
mousewheelChange(){
let _this=this;
const wheelEvents = ['mousewheel', 'DOMMouseScroll'];
wheelEvents.forEach((eventType) => {
this.element.addEventListener(eventType, this.mousewheelHandle);
});
},
mousewheelHandle(e){
let _this=this;
// Firefox e.detail > 0 scroll back, < 0 scroll forward
// chrome/safari e.wheelDelta < 0 scroll back, > 0 scroll forward
if (e.wheelDelta < 0 || e.detail > 0) {//向下滚动
_this.currentImageIndex++;
if(_this.currentImageIndex>_this.nowSeries.length-1){
_this.currentImageIndex=0
}
} else {//向上滚动
_this.currentImageIndex--;
if(_this.currentImageIndex<0){
_this.currentImageIndex=_this.nowSeries.length-1
}
}
_this.updateTheImage(_this.currentImageIndex);//根据 ID 索引切换图像
// 防止页面滚动
return false;
},
其他功能
// set the canvas context to the image coordinate system(将画布上下文设置为图像坐标系统)
//绘制前调用
cornerstone.setToPixelCoordinateSystem(eventData.enabledElement, eventData.canvasContext);
//坐标转换
cornerstone.pageToPixel(element, X, Y)//将像素坐标转为图像坐标,返回x,y对象
//更新图像
cornerstone.updateImage(element);
//清除缓存
cornerstone.imageCache.purgeCache();
cornerstoneWADOImageLoader.wadouri.dataSetCacheManager.purge();
cornerstoneWADOImageLoader.wadouri.fileManager.purge();
//查看缓存
const cacheInfo = cornerstone.imageCache.getCacheInfo();