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import { utilities, Enums } from '@cornerstonejs/tools';
import { cache } from '@cornerstonejs/core';
const LABELMAP = Enums.SegmentationRepresentations.Labelmap;
const commandsModule = ({ commandsManager, servicesManager }: withAppTypes) => {
const services = servicesManager.services;
const { displaySetService, viewportGridService, segmentationService } = services;
const actions = {
...importedActions,
getDynamic4DDisplaySet: () => {
const displaySets = displaySetService.getActiveDisplaySets();
const dynamic4DDisplaySet = displaySets.find(displaySet => {
const anInstance = displaySet.instances?.[0];
if (anInstance) {
return (
anInstance.FrameReferenceTime !== undefined ||
anInstance.NumberOfTimeSlices !== undefined ||
anInstance.TemporalPositionIdentifier !== undefined
);
}
return false;
});
return dynamic4DDisplaySet;
},
getComputedDisplaySets: () => {
const displaySetCache = displaySetService.getDisplaySetCache();
const cachedDisplaySets = [...displaySetCache.values()];
const computedDisplaySets = cachedDisplaySets.filter(displaySet => {
return displaySet.isDerived;
});
return computedDisplaySets;
},
exportTimeReportCSV: ({ segmentations, config, options, summaryStats }) => {
const dynamic4DDisplaySet = actions.getDynamic4DDisplaySet();
const volumeId = dynamic4DDisplaySet?.displaySetInstanceUID;
// cache._volumeCache is a map that has a key that includes the volumeId
// it is not exactly the volumeId, but it is the key that includes the volumeId
// so we can't do cache._volumeCache.get(volumeId) we should iterate
// over the keys and find the one that includes the volumeId
let volumeCacheKey: string | undefined;
for (const [key] of cache._volumeCache) {
if (key.includes(volumeId)) {
volumeCacheKey = key;
break;
}
}
let dynamicVolume;
if (volumeCacheKey) {
dynamicVolume = cache.getVolume(volumeCacheKey);
}
const instance = dynamic4DDisplaySet.instances[0];
const csv = [];
// CSV header information with placeholder empty values for the metadata lines
csv.push(`Patient ID,${instance.PatientID},`);
csv.push(`Study Date,${instance.StudyDate},`);
csv.push(`StudyInstanceUID,${instance.StudyInstanceUID},`);
csv.push(`StudyDescription,${instance.StudyDescription},`);
csv.push(`SeriesInstanceUID,${instance.SeriesInstanceUID},`);
// empty line
csv.push('');
csv.push('');
// Helper function to calculate standard deviation
function calculateStandardDeviation(data) {
const n = data.length;
const mean = data.reduce((acc, value) => acc + value, 0) / n;
const squaredDifferences = data.map(value => (value - mean) ** 2);
const variance = squaredDifferences.reduce((acc, value) => acc + value, 0) / n;
const stdDeviation = Math.sqrt(variance);
return stdDeviation;
}
// Iterate through each segmentation to get the timeData and ijkCoords
segmentations.forEach(segmentation => {
const volume = segmentationService.getLabelmapVolume(segmentation.segmentationId);
const [timeData, ijkCoords] = utilities.dynamicVolume.getDataInTime(dynamicVolume, {
maskVolumeId: volume.volumeId,
}) as number[][];
if (summaryStats) {
// Adding column headers for pixel identifier and segmentation label ids
let headers = 'Operation,Segmentation Label ID';
const maxLength = dynamicVolume.numTimePoints;
for (let t = 0; t < maxLength; t++) {
headers += `,Time Point ${t}`;
}
csv.push(headers);
// // perform summary statistics on the timeData including for each time point, mean, median, min, max, and standard deviation for
// // all the voxels in the ROI
const mean = [];
const min = [];
const minIJK = [];
const max = [];
const maxIJK = [];
const std = [];
const numVoxels = timeData.length;
// Helper function to calculate standard deviation
for (let timeIndex = 0; timeIndex < maxLength; timeIndex++) {
// for each voxel in the ROI, get the value at the current time point
const voxelValues = [];
let sum = 0;
let minValue = Infinity;
let maxValue = -Infinity;
let minIndex = 0;
let maxIndex = 0;
// Single pass through the data to collect all needed values
for (let voxelIndex = 0; voxelIndex < numVoxels; voxelIndex++) {
const value = timeData[voxelIndex][timeIndex];
voxelValues.push(value);
sum += value;
if (value < minValue) {
minValue = value;
minIndex = voxelIndex;
}
if (value > maxValue) {
maxValue = value;
maxIndex = voxelIndex;
}
}
mean.push(sum / numVoxels);
min.push(minValue);
minIJK.push(ijkCoords[minIndex]);
max.push(maxValue);
maxIJK.push(ijkCoords[maxIndex]);
std.push(calculateStandardDeviation(voxelValues));
}
let row = `Mean,${segmentation.label}`;
// Generate separate rows for each statistic
for (let t = 0; t < maxLength; t++) {
row += `,${mean[t]}`;
}
csv.push(row);
row = `Standard Deviation,${segmentation.label}`;
for (let t = 0; t < maxLength; t++) {
row += `,${std[t]}`;
}
csv.push(row);
row = `Min,${segmentation.label}`;
for (let t = 0; t < maxLength; t++) {
row += `,${min[t]}`;
}
csv.push(row);
row = `Max,${segmentation.label}`;
for (let t = 0; t < maxLength; t++) {
row += `,${max[t]}`;
}
csv.push(row);
} else {
// Adding column headers for pixel identifier and segmentation label ids
let headers = 'Pixel Identifier (IJK),Segmentation Label ID';
const maxLength = dynamicVolume.numTimePoints;
for (let t = 0; t < maxLength; t++) {
headers += `,Time Point ${t}`;
}
csv.push(headers);
// Assuming timeData and ijkCoords are of the same length
for (let i = 0; i < timeData.length; i++) {
// Generate the pixel identifier
const pixelIdentifier = `${ijkCoords[i][0]}_${ijkCoords[i][1]}_${ijkCoords[i][2]}`;
// Start a new row for the current pixel
let row = `${pixelIdentifier},${segmentation.label}`;
// Add time data points for this pixel
for (let t = 0; t < timeData[i].length; t++) {
row += `,${timeData[i][t]}`;
}
// Append the row to the CSV array
csv.push(row);
}
}
});
// Convert to CSV string
const csvContent = csv.join('\n');
// Generate filename and trigger download
const filename = `${instance.PatientID}.csv`;
const blob = new Blob([csvContent], { type: 'text/csv;charset=utf-8;' });
const link = document.createElement('a');
const url = URL.createObjectURL(blob);
link.setAttribute('href', url);
link.setAttribute('download', filename);
link.style.visibility = 'hidden';
document.body.appendChild(link);
link.click();
document.body.removeChild(link);
},
swapDynamicWithComputedDisplaySet: ({ displaySet }) => {
const computedDisplaySet = displaySet;
const displaySetCache = displaySetService.getDisplaySetCache();
const cachedDisplaySetKeys = [displaySetCache.keys()];
const { displaySetInstanceUID } = computedDisplaySet;
// Check to see if computed display set is already in cache
if (!cachedDisplaySetKeys.includes(displaySetInstanceUID)) {
displaySetCache.set(displaySetInstanceUID, computedDisplaySet);
}
// Get all viewports and their corresponding indices
const { viewports } = viewportGridService.getState();
// get the viewports in the grid
// iterate over them and find the ones that are showing a dynamic
// volume (displaySet), and replace that exact displaySet with the
// computed displaySet
const dynamic4DDisplaySet = actions.getDynamic4DDisplaySet();
const viewportsToUpdate = [];
for (const [key, value] of viewports) {
const viewport = value;
const viewportOptions = viewport.viewportOptions;
const { displaySetInstanceUIDs } = viewport;
const displaySetInstanceUIDIndex = displaySetInstanceUIDs.indexOf(
dynamic4DDisplaySet.displaySetInstanceUID
);
if (displaySetInstanceUIDIndex !== -1) {
const newViewport = {
viewportId: viewport.viewportId,
// merge the other displaySetInstanceUIDs with the new one
displaySetInstanceUIDs: [
...displaySetInstanceUIDs.slice(0, displaySetInstanceUIDIndex),
displaySetInstanceUID,
...displaySetInstanceUIDs.slice(displaySetInstanceUIDIndex + 1),
],
viewportOptions: {
initialImageOptions: viewportOptions.initialImageOptions,
viewportType: 'volume',
orientation: viewportOptions.orientation,
background: viewportOptions.background,
},
};
viewportsToUpdate.push(newViewport);
}
}
commandsManager.run('setDisplaySetsForViewports', { viewportsToUpdate });
},
swapComputedWithDynamicDisplaySet: () => {
// Todo: this assumes there is only one dynamic display set in the viewer
const dynamicDisplaySet = actions.getDynamic4DDisplaySet();
const displaySetCache = displaySetService.getDisplaySetCache();
const cachedDisplaySetKeys = [...displaySetCache.keys()]; // Fix: Spread to get the array
const { displaySetInstanceUID } = dynamicDisplaySet;
// Check to see if dynamic display set is already in cache
if (!cachedDisplaySetKeys.includes(displaySetInstanceUID)) {
displaySetCache.set(displaySetInstanceUID, dynamicDisplaySet);
}
// Get all viewports and their corresponding indices
const { viewports } = viewportGridService.getState();
// Get the computed 4D display set
const computed4DDisplaySet = actions.getComputedDisplaySets()[0];
const viewportsToUpdate = [];
for (const [key, value] of viewports) {
const viewport = value;
const viewportOptions = viewport.viewportOptions;
const { displaySetInstanceUIDs } = viewport;
const displaySetInstanceUIDIndex = displaySetInstanceUIDs.indexOf(
computed4DDisplaySet.displaySetInstanceUID
);
if (displaySetInstanceUIDIndex !== -1) {
const newViewport = {
viewportId: viewport.viewportId,
// merge the other displaySetInstanceUIDs with the new one
displaySetInstanceUIDs: [
...displaySetInstanceUIDs.slice(0, displaySetInstanceUIDIndex),
displaySetInstanceUID,
...displaySetInstanceUIDs.slice(displaySetInstanceUIDIndex + 1),
],
viewportOptions: {
initialImageOptions: viewportOptions.initialImageOptions,
viewportType: 'volume',
orientation: viewportOptions.orientation,
background: viewportOptions.background,
},
};
viewportsToUpdate.push(newViewport);
}
}
commandsManager.run('setDisplaySetsForViewports', { viewportsToUpdate });
},
createNewLabelMapForDynamicVolume: async ({ label }) => {
const { viewports, activeViewportId } = viewportGridService.getState();
// get the dynamic 4D display set
const dynamic4DDisplaySet = actions.getDynamic4DDisplaySet();
const dynamic4DDisplaySetInstanceUID = dynamic4DDisplaySet.displaySetInstanceUID;
// check if the dynamic 4D display set is in the display, if not we might have
// the computed volumes and we should choose them for the segmentation
// creation
let referenceDisplaySet;
const activeViewport = viewports.get(activeViewportId);
const activeDisplaySetInstanceUIDs = activeViewport.displaySetInstanceUIDs;
const dynamicIsInActiveViewport = activeDisplaySetInstanceUIDs.includes(
dynamic4DDisplaySetInstanceUID
);
if (dynamicIsInActiveViewport) {
referenceDisplaySet = dynamic4DDisplaySet;
}
if (!referenceDisplaySet) {
// try to see if there is any derived displaySet in the active viewport
// which is referencing the dynamic 4D display set
// Todo: this is wrong but I don't have time to fix it now
const cachedDisplaySets = displaySetService.getDisplaySetCache();
for (const [key, displaySet] of cachedDisplaySets) {
if (displaySet.referenceDisplaySetUID === dynamic4DDisplaySetInstanceUID) {
referenceDisplaySet = displaySet;
break;
}
}
}
if (!referenceDisplaySet) {
throw new Error('No reference display set found based on the dynamic data');
}
const displaySet = displaySetService.getDisplaySetByUID(
referenceDisplaySet.displaySetInstanceUID
);
const segmentationId = await segmentationService.createLabelmapForDisplaySet(displaySet, {
label,
});
const firstViewport = viewports.values().next().value;
await segmentationService.addSegmentationRepresentation(firstViewport.viewportId, {
segmentationId,
});
return segmentationId;
},
};
const definitions = {
updateSegmentationsChartDisplaySet: {
commandFn: actions.updateSegmentationsChartDisplaySet,
storeContexts: [],
options: {},
},
exportTimeReportCSV: {
commandFn: actions.exportTimeReportCSV,
storeContexts: [],
options: {},
},
swapDynamicWithComputedDisplaySet: {
commandFn: actions.swapDynamicWithComputedDisplaySet,
storeContexts: [],
options: {},
},
createNewLabelMapForDynamicVolume: {
commandFn: actions.createNewLabelMapForDynamicVolume,
storeContexts: [],
options: {},
},
swapComputedWithDynamicDisplaySet: {
commandFn: actions.swapComputedWithDynamicDisplaySet,
storeContexts: [],
options: {},
},
};
return {
actions,
definitions,
defaultContext: 'DYNAMIC-VOLUME:CORNERSTONE',
};
};
export default commandsModule;
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