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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | 8x 8x 8x 8x 8x 8x 8x 8x 8x | import { cache } from '@cornerstonejs/core';
import { getSegmentation } from '../../stateManagement/segmentation/getSegmentation';
import type {
LabelmapSegmentationDataStack,
LabelmapSegmentationDataVolume,
} from '../../types';
import getOrCreateImageVolume from './getOrCreateImageVolume';
/**
* Retrieves the reference volume associated with a segmentation volume.
* This function first checks if the segmentation volume has a direct reference
* to a volume via referencedVolumeId. If not, it attempts to find the reference
* volume by looking up the first image in the segmentation's imageIds array,
* then finding its referenced image and the volume containing that image.
*
* @param segmentationId - The ID of the segmentation
* @returns The reference volume if found, or null if the segmentation volume
* doesn't exist or no reference volume could be determined
*/
export function getReferenceVolumeForSegmentation(segmentationId: string) {
const segmentation = getSegmentation(segmentationId);
Iif (!segmentation) {
return null;
}
let referenceImageIds: string[];
const labelmap = segmentation.representationData.Labelmap;
// Case 1: Labelmap with imageIds (stack-based)
if ('imageIds' in labelmap) {
const { imageIds } = labelmap;
const firstImage = cache.getImage(imageIds[0]);
const volumeInfo = cache.getVolumeContainingImageId(
firstImage.referencedImageId
);
Eif (volumeInfo?.volume) {
return volumeInfo.volume;
}
// Map image IDs to their referenced IDs
referenceImageIds = imageIds.map(
(imageId) => cache.getImage(imageId).referencedImageId
);
}
// Case 2: Labelmap with volumeId (volume-based)
else Eif ('volumeId' in labelmap) {
const { volumeId, referencedVolumeId } = labelmap;
// Try to get directly referenced volume
if (referencedVolumeId) {
const refVolume = cache.getVolume(referencedVolumeId);
if (refVolume) {
return refVolume;
}
}
const segVolume = cache.getVolume(volumeId);
if (segVolume) {
referenceImageIds = segVolume.imageIds.map(
(imageId) => cache.getImage(imageId).referencedImageId
);
}
}
// Create and return image volume from reference image IDs
return getOrCreateImageVolume(referenceImageIds);
}
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