486a7b30ed
- Check study instances whether they have image data based on sopClassUid or rows (JPEG and PNG images do not have sopClassUid)
103 lines
3.3 KiB
JavaScript
103 lines
3.3 KiB
JavaScript
/**
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* Creates a set of series to be placed in the Study Browser
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* The series that appear in the Study Browser must represent
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* imaging modalities.
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*
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* Furthermore, for drag/drop functionality,
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* it is easiest if the stack objects also contain information about
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* which study they are linked to.
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*
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* @param study The study instance to be used
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* @returns {Array} An array of series to be placed in the Study Browser
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*/
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createStacks = function(study) {
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// Define an empty array of display sets
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var displaySets = [];
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if (!study || !study.seriesList) {
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return displaySets;
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}
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study.seriesList.forEach(series => {
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// If the series has no instances, skip it
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if (!series.instances) {
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return;
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}
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// Search through the instances of this series
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// Split Multi-frame instances and Single-image modalities
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// into their own specific display sets. Place the rest of each
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// series into another display set.
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let stackableInstances = [];
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series.instances.forEach(instance => {
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// All imaging modalities must have a valid value for sopClassUid or rows
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if (!isImage(instance.sopClassUid) && !instance.rows) {
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return;
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}
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let displaySet;
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if (isMultiFrame(instance)) {
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displaySet = makeDisplaySet(series, [ instance ]);
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displaySet.isClip = true;
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// Include the study instance Uid for drag/drop purposes
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displaySet.studyInstanceUid = study.studyInstanceUid;
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// Override the default value of instances.length
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displaySet.numImageFrames = instance.numFrames;
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displaySets.push(displaySet);
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} else if (isSingleImageModality(instance.modality)) {
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displaySet = makeDisplaySet(series, [ instance ]);
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displaySet.studyInstanceUid = study.studyInstanceUid;
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displaySets.push(displaySet);
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} else {
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stackableInstances.push(instance);
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}
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});
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if (stackableInstances.length) {
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let displaySet = makeDisplaySet(series, stackableInstances);
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displaySet.studyInstanceUid = study.studyInstanceUid;
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displaySets.push(displaySet);
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}
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});
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return displaySets;
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};
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function makeDisplaySet(series, instances) {
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const instance = instances[0];
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let displaySet = {
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seriesInstanceUid: series.seriesInstanceUid,
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seriesNumber: series.seriesNumber,
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seriesDescription: series.seriesDescription,
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numImageFrames: instances.length,
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frameRate: instance.frameTime,
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images: instances
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};
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// Sort the images in this series
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displaySet.images.sort(function(a, b) {
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if (a.instanceNumber && b.instanceNumber &&
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a.instanceNumber !== b.instanceNumber) {
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return a.instanceNumber - b.instanceNumber;
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}
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});
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// Create a unique ID for this stack so we can reference it
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displaySet.displaySetInstanceUid = Random.id();
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return displaySet;
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}
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function isSingleImageModality(modality) {
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return (modality === 'CR' ||
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modality === 'MG' ||
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modality === 'DX');
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}
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function isMultiFrame(instance) {
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return instance.numFrames > 1;
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} |