feat(pmap): added support for parametric map (#4284)

extensions/cornerstone/src/Viewport/OHIFCornerstoneViewport.tsx

@@ -131,6 +131,11 @@ const OHIFCornerstoneViewport = React.memo((props: withAppTypes) => {
     throw new Error('Viewport ID is required');
   }
 
+  // Make sure displaySetOptions has one object per displaySet
+  while (displaySetOptions.length < displaySets.length) {
+    displaySetOptions.push({});
+  }
+
   // Since we only have support for dynamic data in volume viewports, we should
   // handle this case here and set the viewportType to volume if any of the
   // displaySets are dynamic volumes

extensions/cornerstone/src/index.tsx

@@ -231,5 +231,6 @@ export {
   getEnabledElement,
   ImageOverlayViewerTool,
   getSOPInstanceAttributes,
+  dicomLoaderService,
 };
 export default cornerstoneExtension;

extensions/cornerstone/src/services/CornerstoneCacheService/CornerstoneCacheService.ts

@@ -200,6 +200,9 @@ class CornerstoneCacheService {
     const volumeData = [];
 
     for (const displaySet of displaySets) {
+      const { Modality } = displaySet;
+      const isParametricMap = Modality === 'PMAP';
+
       // Don't create volumes for the displaySets that have custom load
       // function (e.g., SEG, RT, since they rely on the reference volumes
       // and they take care of their own loading after they are created in their
@@ -210,24 +213,27 @@ class CornerstoneCacheService {
         const headers = userAuthenticationService.getAuthorizationHeader();
         await displaySet.load({ headers });
 
-        volumeData.push({
-          studyInstanceUID: displaySet.StudyInstanceUID,
-          displaySetInstanceUID: displaySet.displaySetInstanceUID,
-        });
+        // Parametric maps have a `load` method but it should not be loaded in the
+        // same way as SEG and RTSTRUCT but like a normal volume
+        if (!isParametricMap) {
+          volumeData.push({
+            studyInstanceUID: displaySet.StudyInstanceUID,
+            displaySetInstanceUID: displaySet.displaySetInstanceUID,
+          });
 
-        // Todo: do some cache check and empty the cache if needed
-        continue;
+          // Todo: do some cache check and empty the cache if needed
+          continue;
+        }
       }
 
       const volumeLoaderSchema = displaySet.volumeLoaderSchema ?? VOLUME_LOADER_SCHEME;
-
       const volumeId = `${volumeLoaderSchema}:${displaySet.displaySetInstanceUID}`;
-
       let volumeImageIds = this.volumeImageIds.get(displaySet.displaySetInstanceUID);
-
       let volume = cs3DCache.getVolume(volumeId);
 
-      if (!volumeImageIds || !volume) {
+      // Parametric maps do not have image ids but they already have volume data
+      // therefore a new volume should not be created.
+      if (!isParametricMap && (!volumeImageIds || !volume)) {
         volumeImageIds = this._getCornerstoneVolumeImageIds(displaySet, dataSource);
 
         volume = await volumeLoader.createAndCacheVolume(volumeId, {

extensions/cornerstone/src/services/ViewportService/CornerstoneViewportService.ts

@@ -814,12 +814,16 @@ class CornerstoneViewportService extends PubSubService implements IViewportServi
     // load any secondary displaySets
     const displaySetInstanceUIDs = this.viewportsDisplaySets.get(viewport.id);
 
-    // can be SEG or RTSTRUCT for now
-    const overlayDisplaySet = displaySetInstanceUIDs
+    // Can be SEG or RTSTRUCT for now but not PMAP
+    const segOrRTSOverlayDisplaySet = displaySetInstanceUIDs
       .map(displaySetService.getDisplaySetByUID)
-      .find(displaySet => displaySet?.isOverlayDisplaySet);
-    if (overlayDisplaySet) {
-      this.addOverlayRepresentationForDisplaySet(overlayDisplaySet, viewport);
+      .find(
+        displaySet =>
+          displaySet?.isOverlayDisplaySet && ['SEG', 'RTSTRUCT'].includes(displaySet.Modality)
+      );
+
+    if (segOrRTSOverlayDisplaySet) {
+      this.addOverlayRepresentationForDisplaySet(segOrRTSOverlayDisplaySet, viewport);
     } else {
       // If the displaySet is not a SEG displaySet we assume it is a primary displaySet
       // and we can look into hydrated segmentations to check if any of them are