@cleerlycode/cornerstone-wado-image-loader
Version:
Cornerstone ImageLoader for DICOM WADO-URI
223 lines (188 loc) • 9.31 kB
HTML
<html>
<head>
<!-- twitter bootstrap CSS stylesheet - included to make things pretty, not needed or used by cornerstone -->
<link href="../bootstrap.min.css" rel="stylesheet">
<link href="../cornerstone.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="page-header">
<h1>Example of displaying a DICOM P10 multiframe images using Cornerstone</h1>
<p class="lead">
Enter a URL for a DICOM P10 multiframe sop instance to view it using cornerstone.
<button id="toggleCollapseInfo" class="btn btn-primary" type="button">
Click for more info
</button>
</p>
</div>
<div id="collapseInfo" class="collapse" style="display:none;">
<p>
This example illustrates how to use the cornerstoneWADOImageLoader to get a DICOM P10
SOP instance using HTTP and display it in your web browser using cornerstone.
Not all transfer syntaxes are currently supported,
<a href="https://github.com/cornerstonejs/cornerstoneWADOImageLoader/blob/master/docs/TransferSyntaxes.md">
click here for the full list.
</a>
For WADO-URI requests,
you can request that the server return the SOP Instance in explicit little endian by
appending the following query string to your URL:
<code>&transferSyntax=1.2.840.10008.1.2.1</code>
</p>
<strong>If you get an HTTP error and your URL is correct, it is probably because the server is not configured to
allow <a href="http://en.wikipedia.org/wiki/Cross-origin_resource_sharing">Cross Origin Requests</a>.
Most browsers will allow you to enable cross domain requests via settings or command line switches,
you can start chrome with the command line switch <code>--disable-web-security</code> to allow cross origin requests.
See the <a href="http://enable-cors.org/">Enable CORS site</a> for information about CORS.
</strong>
<br>
<br>
<p>
Looking for a CORS proxy? Try <a href="https://www.npmjs.com/package/corsproxy">CORSProxy</a>
</p>
<strong>Use of this example require IE10+ or any other modern browser.</strong>
<hr>
</div>
<div id="loadProgress">Image Load Progress:</div>
<div class="row">
<form id="form" class="form-horizontal">
<div class="form-group">
<label class="control-label col-sm-1" for="wadoURL">URL</label>
<div class="col-sm-8">
<input class="form-control" type="text" id="wadoURL" placeholder="Enter WADO URL" value="https://raw.githubusercontent.com/cornerstonejs/cornerstoneWADOImageLoader/master/testImages/CT0012.fragmented_no_bot_jpeg_baseline.51.dcm">
</div>
<div class="col-sm-3">
<button class="form-control" type="button" id="downloadAndView" class="btn btn-primary">Download and View</button>
</div>
</div>
</form>
</div>
<br>
<div style="width:512px;height:512px;position:relative;color: white;display:inline-block;border-style:solid;border-color:black;"
oncontextmenu="return false"
class='disable-selection noIbar'
unselectable='on'
onselectstart='return false;'
onmousedown='return false;'>
<div id="dicomImage"
style="width:512px;height:512px;top:0px;left:0px; position:absolute">
</div>
</div>
</div>
</body>
<!-- include the cornerstone library -->
<script src="../cornerstone.min.js"></script>
<SCRIPT src="../cornerstoneMath.min.js"></SCRIPT>
<SCRIPT src="../cornerstoneTools.min.js"></SCRIPT>
<!-- include the dicomParser library as the WADO image loader depends on it -->
<script src="../dicomParser.min.js"></script>
<!-- BEGIN Optional Codecs -->
<!-- OpenJPEG based jpeg 2000 codec -->
<script src="../../codecs/openJPEG-FixedMemory.js"></script>
<!-- PDF.js based jpeg 2000 codec -->
<!-- NOTE: do not load the OpenJPEG codec if you use this one -->
<!-- <script src="../../codecs/jpx.min.js"></script> -->
<!-- JPEG-LS codec -->
<script src="../../codecs/charLS-FixedMemory-browser.js"></script>
<!-- JPEG Lossless codec -->
<script src="../../codecs/jpegLossless.js"></script>
<!-- JPEG Baseline codec -->
<script src="../../codecs/jpeg.js"></script>
<!-- Deflate transfer syntax codec -->
<script src="../../codecs/pako.min.js"></script>
<!-- END Optional Codecs -->
<!-- include the cornerstoneWADOImageLoader library -->
<script src="../../dist/cornerstoneWADOImageLoader.js"></script>
<script>
cornerstoneWADOImageLoader.external.cornerstone = cornerstone;
cornerstoneWADOImageLoader.configure({
beforeSend: function(xhr) {
// Add custom headers here (e.g. auth tokens)
//xhr.setRequestHeader('x-auth-token', 'my auth token');
}
});
var loaded = false;
function loadAndViewImage(url) {
var element = document.getElementById('dicomImage');
// since this is a multi-frame example, we need to load the DICOM SOP Instance into memory and parse it
// so we know the number of frames it has so we can create the stack. Calling load() will increment the reference
// count so it will stay in memory until unload() is explicitly called and all other reference counts
// held by the cornerstone cache are gone. See below for more info
cornerstoneWADOImageLoader.wadouri.dataSetCacheManager.load(url, cornerstoneWADOImageLoader.internal.xhrRequest).then(function(dataSet) {
// dataset is now loaded, get the # of frames so we can build the array of imageIds
var numFrames = dataSet.intString('x00280008');
if(!numFrames) {
alert('Missing element NumberOfFrames (0028,0008)');
return;
}
var imageIds = [];
var imageIdRoot = 'wadouri:' + url;
for(var i=0; i < numFrames; i++) {
var imageId = imageIdRoot + "?frame="+i;
imageIds.push(imageId);
}
var stack = {
currentImageIdIndex : 0,
imageIds: imageIds
};
// Load and cache the first image frame. Each imageId cached by cornerstone increments
// the reference count to make sure memory is cleaned up properly.
cornerstone.loadAndCacheImage(imageIds[0]).then(function(image) {
console.log(image);
// now that we have an image frame in the cornerstone cache, we can decrement
// the reference count added by load() above when we loaded the metadata. This way
// cornerstone will free all memory once all imageId's are removed from the cache
cornerstoneWADOImageLoader.wadouri.dataSetCacheManager.unload(url);
cornerstone.displayImage(element, image);
if(loaded === false) {
cornerstoneTools.wwwc.activate(element, 1); // ww/wc is the default tool for left mouse button
// Set the stack as tool state
cornerstoneTools.addStackStateManager(element, ['stack', 'playClip']);
cornerstoneTools.addToolState(element, 'stack', stack);
// Start playing the clip
// TODO: extract the frame rate from the dataset
var frameRate = 10;
cornerstoneTools.playClip(element, frameRate);
loaded = true;
}
}, function(err) {
alert(err);
});
/*}
catch(err) {
alert(err);
}*/
});
}
function downloadAndView() {
const url = document.getElementById('wadoURL').value;
// image enable the dicomImage element and activate a few tools
loadAndViewImage(url);
return false;
}
cornerstone.events.addEventListener('cornerstoneimageloadprogress', function(event) {
const eventData = event.detail;
const loadProgress = document.getElementById('loadProgress');
loadProgress.textContent = `Image Load Progress: ${eventData.percentComplete}%`;
});
const element = document.getElementById('dicomImage');
cornerstone.enable(element);
cornerstoneTools.mouseInput.enable(element);
cornerstoneTools.mouseWheelInput.enable(element);
document.getElementById('downloadAndView').addEventListener('click', function(e) {
downloadAndView();
});
const form = document.getElementById('form');
form.addEventListener('submit', function() {
downloadAndView();
return false;
});
document.getElementById('toggleCollapseInfo').addEventListener('click', function() {
if (document.getElementById('collapseInfo').style.display === 'none') {
document.getElementById('collapseInfo').style.display = 'block';
} else {
document.getElementById('collapseInfo').style.display = 'none';
}
});
</script>
</html>