101 lines
3.5 KiB
JavaScript
101 lines
3.5 KiB
JavaScript
import { OHIF } from 'meteor/ohif:core';
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import { dcmjs } from 'meteor/ohif:cornerstone';
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import getLengthMeasurementData from './getLengthMeasurementData';
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const supportedSopClassUIDs = ['1.2.840.10008.5.1.4.1.1.88.22'];
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const toArray = function(x) {
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return (x.constructor.name === "Array" ? x : [x]);
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};
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const codeMeaningEquals = (codeMeaningName) => {
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return (contentItem) => {
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return contentItem.ConceptNameCodeSequence.CodeMeaning === codeMeaningName;
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};
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};
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const imagingMeasurementsToMeasurementData = (dataset, displaySets) => {
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// Identify the Imaging Measurements
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const imagingMeasurementContent = toArray(dataset.ContentSequence).find(codeMeaningEquals("Imaging Measurements"));
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// Retrieve the Measurements themselves
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const measurementGroupContent = toArray(imagingMeasurementContent.ContentSequence).find(codeMeaningEquals("Measurement Group"));
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// For now, bail out if the dataset is not a TID1500 SR with length measurements
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// TODO: generalize to the various kinds of report
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// TODO: generalize to the kinds of measurements the Viewer supports
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if (dataset.ContentTemplateSequence.TemplateIdentifier !== "1500") {
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OHIF.log.warn("This package can currently only interpret DICOM SR TID 1500");
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return {};
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}
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// Filter to find Length measurements in the Structured Report
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const lengthMeasurementContent = toArray(measurementGroupContent.ContentSequence).filter(codeMeaningEquals("Length"));
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// Retrieve Length Measurement Data
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return getLengthMeasurementData(lengthMeasurementContent, displaySets);
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};
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const retrieveDataFromSR = (Part10SRArrayBuffer) => {
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const allStudies = OHIF.viewer.Studies.all();
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let allDisplaySets = [];
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allStudies.forEach(study => {
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allDisplaySets = allDisplaySets.concat(study.displaySets);
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});
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// get the dicom data as an Object
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let dicomData = dcmjs.data.DicomMessage.readFile(Part10SRArrayBuffer);
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let dataset = dcmjs.data.DicomMetaDictionary.naturalizeDataset(dicomData.dict);
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// Convert the SR into the kind of object the Measurements package is expecting
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return imagingMeasurementsToMeasurementData(dataset, allDisplaySets);
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};
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export const getLatestSRSeries = () => {
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const allStudies = OHIF.viewer.StudyMetadataList.all();
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let latestSeries;
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allStudies.forEach(study => {
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study.getSeries().forEach(series => {
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const firstInstance = series.getFirstInstance();
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const sopClassUid = firstInstance._instance.sopClassUid;
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if (supportedSopClassUIDs.includes(sopClassUid)) {
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if(!latestSeries) {
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latestSeries = series;
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} else if (series._data.seriesDate > latestSeries._data.seriesDate ||
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(series._data.seriesDate === latestSeries._data.seriesDate && series._data.seriesTime > latestSeries._data.seriesTime)) {
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latestSeries = series;
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}
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}
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});
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});
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return latestSeries;
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};
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export const handleSR = (series) => {
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const instance = series.getFirstInstance();
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return new Promise((resolve, reject) => {
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const request = new XMLHttpRequest();
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request.responseType = 'arraybuffer';
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request.open('GET', instance.getDataProperty('wadouri'));
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request.onload = function (progressEvent) {
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const data = retrieveDataFromSR(progressEvent.currentTarget.response);
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resolve(data);
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};
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request.onerror = function(error) {
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reject(error);
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};
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request.send();
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});
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};
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