95 lines
3.0 KiB
JavaScript
95 lines
3.0 KiB
JavaScript
import { OHIF } from 'meteor/ohif:core';
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import { _ } from 'meteor/underscore';
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class ImageMetadataBuilder {
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constructor() {
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this.tags = {};
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}
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addTag(tag, value, multi) {
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this.tags[tag] = {
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tag,
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value,
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multi
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}
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return this;
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}
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toJSON() {
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const json = {};
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const keys = Object.keys(this.tags);
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keys.forEach(key => {
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if(!this.tags.hasOwnProperty(key)) {
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return;
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}
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const tag = this.tags[key];
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const multi = !!tag.multi;
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const value = tag.value && multi ? tag.value.split('\\') : [tag.value];
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if((value.length === 1) && (value[0] == null)) {
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return;
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}
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json[key] = {
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Value: value
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};
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});
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return json;
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}
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}
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/**
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* Obtain an imageId for Cornerstone based on the WADO-RS scheme
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*
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* @param {object} instanceMetada metadata object (InstanceMetadata)
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* @returns {string} The imageId to be used by Cornerstone
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*/
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export function getWADORSImageId(instance) {
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const uri = Meteor.absoluteUrl(instance.wadorsuri);
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const imageId = `wadors:${uri}`;
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const imageMetadata = new ImageMetadataBuilder()
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.addTag('00080016', instance.sopClassUid)
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.addTag('00080018', instance.sopInstanceUid)
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.addTag('00180050', instance.sliceThickness)
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.addTag('00200013', instance.instanceNumber)
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.addTag('00200032', instance.imagePositionPatient, true)
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.addTag('00200037', instance.imageOrientationPatient, true)
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.addTag('00200052', instance.frameOfReferenceUID)
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.addTag('00201041', instance.sliceLocation)
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.addTag('00280002', instance.samplesPerPixel)
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.addTag('00280004', instance.photometricInterpretation)
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.addTag('00280006', instance.planarConfiguration)
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.addTag('00280010', instance.rows)
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.addTag('00280011', instance.columns)
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.addTag('00280030', instance.pixelSpacing, true)
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.addTag('00280034', instance.pixelAspectRatio, true)
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.addTag('00280100', instance.bitsAllocated)
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.addTag('00280101', instance.bitsStored)
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.addTag('00280102', instance.highBit)
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.addTag('00280103', instance.pixelRepresentation)
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.addTag('00280106', instance.smallestPixelValue)
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.addTag('00280107', instance.largestPixelValue)
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.addTag('00281050', instance.windowCenter, true)
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.addTag('00281051', instance.windowWidth, true)
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.addTag('00281052', instance.rescaleIntercept)
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.addTag('00281053', instance.rescaleSlope)
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.addTag('00281054', instance.rescaleType)
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.toJSON();
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_.extend(imageMetadata, {
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uri: uri,
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sizeInBytes: instance.rows * instance.columns * (instance.bitsAllocated / 8),
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instance: instance
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});
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cornerstoneWADOImageLoader.wadors.metaDataManager.add(imageId, imageMetadata);
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OHIF.log.info('WADO-RS ImageID: ' + imageId);
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return imageId;
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};
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