104 lines
3.3 KiB
JavaScript
104 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 rows (or columns)
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if (!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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}
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