Query Dicoms

query.js

import { api } from 'dicomweb-client'; // see: https://www.npmjs.com/package/dicomweb-client

const c = {
    name: 'aws',
    wadoUriRoot: 'https://.../dicomweb',
    qidoRoot: 'https://.../dicomweb',
    wadoRoot: 'https://.../dicomweb',
    qidoSupportsIncludeField: false,
    supportsReject: false,
    imageRendering: 'wadors',
    thumbnailRendering: 'wadors',
    enableStudyLazyLoad: true,
    supportsFuzzyMatching: false,
    supportsWildcard: true,
    staticWado: true,
    singlepart: 'bulkdata,video,pdf',
},

const qidoConfig = {
    url: c.qidoRoot,
    staticWado: c.staticWado,
    singlepart: c.singlepart,
    headers: null, // UserAuthenticationService.getAuthorizationHeader(), or other headers/cookies
    errorInterceptor: console.error // errorHandler.getHTTPErrorHandler(),
};

qidoDicomWebClient = api.DICOMwebClient(qidoConfig);
qidoDicomWebClient.headers = headers;

const studyInstanceUID = 'my study of interset'
const result = await qidoClient.searchForSeries({ studyInstanceUID });

result.forEach(async qidoSeries => {
    seriesInstanceUID = getString(qidoSeries['0020000E'])
    const instances = await qidoClient.searchForInstance ({ studyInstanceUID, seriesInstanceUID });
    console.log(instances )
})

// form the /dicomweb/study/<studyid>/series/<seriesid>/instances/<instanceid>/frame/1 and send requests via fetch 
const url = 'my formed url'
const request = new Request(url, {method: 'GET', headers: {}});
const response = await fetch(request, headers={})

// add to the caches object with the following hierachy
// caches =>
//      cache /dicomweb/study/<studyid>/series/<seriesid>
//          res cache.put(request, response)
//      cache /dicomweb/study/<studyid>/series/<seriesid>
//      cache /dicomweb/study/<studyid>/series/<seriesid>

// this cache will be avaliable to OHIF app  

// helper functions
// gets a string from dicomweb-client
function getString(element, defaultValue) {
    if (!element) {
      return defaultValue;
    }
    // Value is not present if the attribute has a zero length value
    if (!element.Value) {
      return defaultValue;
    }
    // Sanity check to make sure we have at least one entry in the array.
    if (!element.Value.length) {
      return defaultValue;
    }
    // Join the array together separated by backslash
    // NOTE: Orthanc does not correctly split values into an array so the join is a no-op
    return element.Value.join('\\');
}