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import pubSubServiceInterface from '../_shared/pubSubServiceInterface';
import createStudyMetadata from './createStudyMetadata';
const EVENTS = {
STUDY_ADDED: 'event::dicomMetadataStore:studyAdded',
INSTANCES_ADDED: 'event::dicomMetadataStore:instancesAdded',
SERIES_ADDED: 'event::dicomMetadataStore:seriesAdded',
SERIES_UPDATED: 'event::dicomMetadataStore:seriesUpdated',
};
/**
* @example
* studies: [
* {
* StudyInstanceUID: string,
* isLoaded: boolean,
* series: [
* {
* Modality: string,
* SeriesInstanceUID: string,
* SeriesNumber: number,
* SeriesDescription: string,
* instances: [
* {
* // naturalized instance metadata
* SOPInstanceUID: string,
* SOPClassUID: string,
* Rows: number,
* Columns: number,
* PatientSex: string,
* Modality: string,
* InstanceNumber: string,
* },
* {
* // instance 2
* },
* ],
* },
* {
* // series 2
* },
* ],
* },
* ],
*/
const _model = {
studies: [],
};
function _getStudyInstanceUIDs() {
return _model.studies.map(aStudy => aStudy.StudyInstanceUID);
}
function _getStudy(StudyInstanceUID) {
return _model.studies.find(aStudy => aStudy.StudyInstanceUID === StudyInstanceUID);
}
function _getSeries(StudyInstanceUID, SeriesInstanceUID) {
Iif(!StudyInstanceUID) {
const series = _model.studies.map(study => study.series).flat();
return series.find(aSeries => aSeries.SeriesInstanceUID === SeriesInstanceUID);
}
const study = _getStudy(StudyInstanceUID);
Iif (!study) {
return;
}
return study.series.find(aSeries => aSeries.SeriesInstanceUID === SeriesInstanceUID);
}
function _getInstance(StudyInstanceUID, SeriesInstanceUID, SOPInstanceUID) {
const series = _getSeries(StudyInstanceUID, SeriesInstanceUID);
Iif (!series) {
return;
}
return series.getInstance(SOPInstanceUID);
}
function _getInstanceByImageId(imageId) {
for (const study of _model.studies) {
for (const series of study.series) {
for (const instance of series.instances) {
Iif (instance.imageId === imageId) {
return instance;
}
}
}
}
}
/**
* Update the metadata of a specific series
* @param {*} StudyInstanceUID
* @param {*} SeriesInstanceUID
* @param {*} metadata metadata inform of key value pairs
* @returns
*/
function _updateMetadataForSeries(StudyInstanceUID, SeriesInstanceUID, metadata) {
const study = _getStudy(StudyInstanceUID);
Iif (!study) {
return;
}
const series = study.series.find(aSeries => aSeries.SeriesInstanceUID === SeriesInstanceUID);
const { instances } = series;
// update all instances metadata for this series with the new metadata
instances.forEach(instance => {
Object.keys(metadata).forEach(key => {
// if metadata[key] is an object, we need to merge it with the existing
// metadata of the instance
if (typeof metadata[key] === 'object') {
instance[key] = { ...instance[key], ...metadata[key] };
}
// otherwise, we just replace the existing metadata with the new one
else {
instance[key] = metadata[key];
}
});
});
// broadcast the series updated event
this._broadcastEvent(EVENTS.SERIES_UPDATED, {
SeriesInstanceUID,
StudyInstanceUID,
madeInClient: true,
});
}
const BaseImplementation = {
EVENTS,
listeners: {},
addInstance(dicomJSONDatasetOrP10ArrayBuffer) {
let dicomJSONDataset;
// If Arraybuffer, parse to DICOMJSON before naturalizing.
if (dicomJSONDatasetOrP10ArrayBuffer instanceof ArrayBuffer) {
const dicomData = dcmjs.data.DicomMessage.readFile(dicomJSONDatasetOrP10ArrayBuffer);
dicomJSONDataset = dicomData.dict;
} else {
dicomJSONDataset = dicomJSONDatasetOrP10ArrayBuffer;
}
let naturalizedDataset;
if (dicomJSONDataset['SeriesInstanceUID'] === undefined) {
naturalizedDataset = dcmjs.data.DicomMetaDictionary.naturalizeDataset(dicomJSONDataset);
} else {
naturalizedDataset = dicomJSONDataset;
}
const { StudyInstanceUID } = naturalizedDataset;
let study = _model.studies.find(study => study.StudyInstanceUID === StudyInstanceUID);
Iif (!study) {
_model.studies.push(createStudyMetadata(StudyInstanceUID));
study = _model.studies[_model.studies.length - 1];
}
study.addInstanceToSeries(naturalizedDataset);
},
addInstances(instances, madeInClient = false) {
const { StudyInstanceUID, SeriesInstanceUID } = instances[0];
let study = _model.studies.find(study => study.StudyInstanceUID === StudyInstanceUID);
Iif (!study) {
_model.studies.push(createStudyMetadata(StudyInstanceUID));
study = _model.studies[_model.studies.length - 1];
}
study.addInstancesToSeries(instances);
// Broadcast an event even if we used cached data.
// This is because the mode needs to listen to instances that are added to build up its active displaySets.
// It will see there are cached displaySets and end early if this Series has already been fired in this
// Mode session for some reason.
this._broadcastEvent(EVENTS.INSTANCES_ADDED, {
StudyInstanceUID,
SeriesInstanceUID,
madeInClient,
});
},
updateSeriesMetadata(seriesMetadata) {
const { StudyInstanceUID, SeriesInstanceUID } = seriesMetadata;
const series = _getSeries(StudyInstanceUID, SeriesInstanceUID);
Iif (!series) {
return;
}
const study = _getStudy(StudyInstanceUID);
Iif (study) {
study.setSeriesMetadata(SeriesInstanceUID, seriesMetadata);
}
},
addSeriesMetadata(seriesSummaryMetadata, madeInClient = false) {
Iif (!seriesSummaryMetadata || !seriesSummaryMetadata.length || !seriesSummaryMetadata[0]) {
return;
}
const { StudyInstanceUID } = seriesSummaryMetadata[0];
let study = _getStudy(StudyInstanceUID);
if (!study) {
study = createStudyMetadata(StudyInstanceUID);
// Will typically be undefined with a compliant DICOMweb server, reset later
study.StudyDescription = seriesSummaryMetadata[0].StudyDescription;
seriesSummaryMetadata.forEach(item => {
if (study.ModalitiesInStudy.indexOf(item.Modality) === -1) {
study.ModalitiesInStudy.push(item.Modality);
}
});
study.NumberOfStudyRelatedSeries = seriesSummaryMetadata.length;
_model.studies.push(study);
}
seriesSummaryMetadata.forEach(series => {
const { SeriesInstanceUID } = series;
study.setSeriesMetadata(SeriesInstanceUID, series);
});
this._broadcastEvent(EVENTS.SERIES_ADDED, {
StudyInstanceUID,
seriesSummaryMetadata,
madeInClient,
});
},
addStudy(study) {
const { StudyInstanceUID } = study;
const existingStudy = _model.studies.find(study => study.StudyInstanceUID === StudyInstanceUID);
Iif (!existingStudy) {
const newStudy = createStudyMetadata(StudyInstanceUID);
newStudy.PatientID = study.PatientID;
newStudy.PatientName = study.PatientName;
newStudy.StudyDate = study.StudyDate;
newStudy.ModalitiesInStudy = study.ModalitiesInStudy;
newStudy.StudyDescription = study.StudyDescription;
newStudy.AccessionNumber = study.AccessionNumber;
newStudy.NumInstances = study.NumInstances; // todo: Correct naming?
_model.studies.push(newStudy);
}
},
getStudyInstanceUIDs: _getStudyInstanceUIDs,
getStudy: _getStudy,
getSeries: _getSeries,
getInstance: _getInstance,
getInstanceByImageId: _getInstanceByImageId,
updateMetadataForSeries: _updateMetadataForSeries,
};
const DicomMetadataStore = Object.assign(
// get study
// iterate over all series
{},
BaseImplementation,
pubSubServiceInterface
);
export { DicomMetadataStore };
export default DicomMetadataStore;
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