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import i18n from '@ohif/i18n';
import { segmentation as cstSegmentation } from '@cornerstonejs/tools';
import { SOPClassHandlerId } from './id';
import loadRTStruct from './loadRTStruct';
const { sopClassDictionary } = utils;
const sopClassUids = [sopClassDictionary.RTStructureSetStorage];
const loadPromises = {};
function _getDisplaySetsFromSeries(
instances,
servicesManager: AppTypes.ServicesManager,
extensionManager
) {
utils.sortStudyInstances(instances);
// Choose the LAST instance in the list as the most recently created one.
const instance = instances[instances.length - 1];
const {
StudyInstanceUID,
SeriesInstanceUID,
SOPInstanceUID,
SeriesDescription = '',
SeriesNumber,
SOPClassUID,
wadoRoot,
wadoUri,
wadoUriRoot,
imageId: predecessorImageId,
} = instance;
/**
* The "SeriesDate" for a display set is really the display set date, which
* should be the date of the instance being used - for a structure set that is
* usually the structure set date/time, and for one saved into an existing
* series only the instance level date/time reflects the save.
*/
const { SeriesDate, SeriesTime } = utils.getLatestInstanceDateTime(instance);
const displaySet = {
Modality: 'RTSTRUCT',
loading: false,
isReconstructable: false,
displaySetInstanceUID: utils.guid(),
SeriesDescription,
SeriesNumber,
SeriesDate,
SeriesTime,
SOPInstanceUID,
SeriesInstanceUID,
StudyInstanceUID,
SOPClassHandlerId,
SOPClassUID,
FrameOfReferenceUID: null,
referencedImages: null,
referencedSeriesInstanceUID: null,
referencedDisplaySetInstanceUID: null,
isDerivedDisplaySet: true,
isLoaded: false,
isHydrated: false,
structureSet: null,
sopClassUids,
instance,
instances,
predecessorImageId,
wadoRoot,
wadoUriRoot,
wadoUri,
isOverlayDisplaySet: true,
label: SeriesDescription || `${i18n.t('Series')} ${SeriesNumber} - ${i18n.t('RTSTRUCT')}`,
};
let referencedSeriesSequence = instance.ReferencedSeriesSequence;
if (
instance.ReferencedFrameOfReferenceSequence?.RTReferencedStudySequence &&
!instance.ReferencedSeriesSequence
) {
instance.ReferencedSeriesSequence = _deriveReferencedSeriesSequenceFromFrameOfReferenceSequence(
instance.ReferencedFrameOfReferenceSequence
);
referencedSeriesSequence = instance.ReferencedSeriesSequence;
}
Iif (!referencedSeriesSequence) {
console.error('ReferencedSeriesSequence is missing for the RTSTRUCT');
return;
}
const referencedSeries = referencedSeriesSequence[0];
displaySet.referencedImages = instance.ReferencedSeriesSequence.ReferencedInstanceSequence;
displaySet.referencedSeriesInstanceUID = referencedSeries.SeriesInstanceUID;
displaySet.FrameOfReferenceUID =
instance.ReferencedFrameOfReferenceSequence?.[0]?.FrameOfReferenceUID;
const { displaySetService } = servicesManager.services;
const referencedDisplaySets =
displaySetService.getDisplaySetsForReferences(referencedSeriesSequence);
Iif (referencedDisplaySets?.length > 1) {
console.warn(
'Reference applies to more than 1 display set for Contours, applying only to first display set'
);
}
if (!referencedDisplaySets || referencedDisplaySets.length === 0) {
// Instead of throwing error, subscribe to display sets added
const { unsubscribe } = displaySetService.subscribe(
displaySetService.EVENTS.DISPLAY_SETS_ADDED,
({ displaySetsAdded }) => {
const addedDisplaySet = displaySetsAdded[0];
if (addedDisplaySet.SeriesInstanceUID === displaySet.referencedSeriesInstanceUID) {
displaySet.referencedDisplaySetInstanceUID = addedDisplaySet.displaySetInstanceUID;
displaySet.isReconstructable = addedDisplaySet.isReconstructable;
displaySet.FrameOfReferenceUID = addedDisplaySet.FrameOfReferenceUID;
unsubscribe();
}
}
);
} else {
const [referencedDisplaySet] = referencedDisplaySets;
displaySet.referencedDisplaySetInstanceUID = referencedDisplaySet.displaySetInstanceUID;
displaySet.isReconstructable = referencedDisplaySet.isReconstructable;
displaySet.FrameOfReferenceUID = referencedDisplaySet.FrameOfReferenceUID;
}
displaySet.load = ({ headers, createSegmentation = true }) =>
_load(displaySet, servicesManager, extensionManager, headers, createSegmentation);
return [displaySet];
}
function _load(
rtDisplaySet,
servicesManager: AppTypes.ServicesManager,
extensionManager,
headers,
createSegmentation = true
) {
const { SOPInstanceUID } = rtDisplaySet;
const { segmentationService } = servicesManager.services;
if (
(rtDisplaySet.loading || rtDisplaySet.isLoaded) &&
loadPromises[SOPInstanceUID] &&
_segmentationExists(rtDisplaySet)
) {
return loadPromises[SOPInstanceUID];
}
rtDisplaySet.loading = true;
// We don't want to fire multiple loads, so we'll wait for the first to finish
// and also return the same promise to any other callers.
loadPromises[SOPInstanceUID] = new Promise<void>(async (resolve, reject) => {
try {
if (!rtDisplaySet.structureSet) {
const structureSet = await loadRTStruct(extensionManager, rtDisplaySet, headers);
rtDisplaySet.structureSet = structureSet;
}
if (createSegmentation) {
await segmentationService.createSegmentationForRTDisplaySet(rtDisplaySet);
}
resolve();
} catch (error) {
reject(error);
} finally {
rtDisplaySet.loading = false;
}
});
return loadPromises[SOPInstanceUID];
}
function _deriveReferencedSeriesSequenceFromFrameOfReferenceSequence(
ReferencedFrameOfReferenceSequence
) {
const ReferencedSeriesSequence = [];
ReferencedFrameOfReferenceSequence.forEach(referencedFrameOfReference => {
const { RTReferencedStudySequence } = referencedFrameOfReference;
RTReferencedStudySequence.forEach(rtReferencedStudy => {
const { RTReferencedSeriesSequence } = rtReferencedStudy;
RTReferencedSeriesSequence.forEach(rtReferencedSeries => {
const ReferencedInstanceSequence = [];
const { ContourImageSequence, SeriesInstanceUID } = rtReferencedSeries;
ContourImageSequence.forEach(contourImage => {
ReferencedInstanceSequence.push({
ReferencedSOPInstanceUID: contourImage.ReferencedSOPInstanceUID,
ReferencedSOPClassUID: contourImage.ReferencedSOPClassUID,
});
});
const referencedSeries = {
SeriesInstanceUID,
ReferencedInstanceSequence,
};
ReferencedSeriesSequence.push(referencedSeries);
});
});
});
return ReferencedSeriesSequence;
}
function _segmentationExists(segDisplaySet) {
return !!cstSegmentation.state.getSegmentation(segDisplaySet.displaySetInstanceUID);
}
function getSopClassHandlerModule(params: OhifTypes.Extensions.ExtensionParams) {
const { servicesManager, extensionManager } = params;
return [
{
name: 'dicom-rt',
sopClassUids,
getDisplaySetsFromSeries: instances => {
return _getDisplaySetsFromSeries(instances, servicesManager, extensionManager);
},
},
];
}
export default getSopClassHandlerModule;
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