feat(measurement-table) Display support for measurements from DICOM Structured Reports (#225)

Packages/ohif-measurement-table/client/utils/getLengthMeasurementData.js

@@ -0,0 +1,95 @@
+import { OHIF } from 'meteor/ohif:core';
+import { cornerstone } from 'meteor/ohif:cornerstone';
+
+function getInstanceMetadata (displaySets, sopInstanceUid) {
+    let instance;
+
+    // Use Array.some so that this loop stops when the internal loop
+    // has found the correct instance
+    displaySets.some(displaySet => {
+        // Search the display set to find the instance metadata for
+        return displaySet.images.find(instanceMetadata => {
+            if (instanceMetadata._sopInstanceUID === sopInstanceUid) {
+                instance = instanceMetadata;
+
+                return true;
+            }
+        });
+    });
+
+    return instance;
+};
+
+export default function getLengthMeasurementData(lengthMeasurementContent, displaySets) {
+    let lengthStates = [];
+
+    lengthMeasurementContent.forEach(groupItemContent => {
+        const lengthContent = groupItemContent.ContentSequence;
+        const reference = lengthContent.ContentSequence.ReferencedSOPSequence;
+        const lengthState = {};
+
+        lengthState.measuredValue = groupItemContent.MeasuredValueSequence.NumericValue;
+        lengthState.handles = {start: {}, end: {}};
+        [lengthState.handles.start.x,
+            lengthState.handles.start.y,
+            lengthState.handles.end.x,
+            lengthState.handles.end.y] = lengthContent.GraphicData;
+
+        // TODO: Save textbox position in GraphicData?
+        lengthState.handles.textBox = {
+            hasMoved: false,
+            movesIndependently: false,
+            drawnIndependently: true,
+            allowedOutsideImage: true,
+            hasBoundingBox: true
+        }
+
+        lengthState.ReferencedInstanceUID = reference.ReferencedSOPInstanceUID;
+        if (reference.ReferencedFrameNumber && reference.ReferencedFrameNumber !== 'NaN') {
+            lengthState.ReferencedFrameNumber = reference.ReferencedFrameNumber;
+        } else {
+            lengthState.ReferencedFrameNumber = 0;
+        }
+
+        lengthStates.push(lengthState);
+    });
+
+    const lengthMeasurementData = [];
+
+    let measurementNumber = 0;
+    lengthStates.forEach(lengthState => {
+        const sopInstanceUid = lengthState.ReferencedInstanceUID;
+        const instanceMetadata = getInstanceMetadata(displaySets, sopInstanceUid);
+        const imageId = OHIF.viewerbase.getImageId(instanceMetadata);
+        if (!imageId) {
+            return;
+        }
+
+        const studyInstanceUid = cornerstone.metaData.get('study', imageId).studyInstanceUid;
+        const seriesInstanceUid = cornerstone.metaData.get('series', imageId).seriesInstanceUid;
+        const patientId = instanceMetadata._study.patientId;
+        const frameIndex = lengthState.ReferencedFrameNumber;
+        const imagePath = [studyInstanceUid, seriesInstanceUid, sopInstanceUid, frameIndex].join('_');
+        const measurement = {
+            handles: lengthState.handles,
+            length: lengthState.measuredValue,
+            imageId,
+            imagePath,
+            sopInstanceUid,
+            seriesInstanceUid,
+            studyInstanceUid,
+            patientId,
+            frameIndex,
+            measurementNumber: ++measurementNumber,
+            userId: 'UserID',
+            timepointId: OHIF.viewer.data.currentTimepointId,
+            toolType: 'length',
+            _id: imageId + measurementNumber,
+        };
+
+        lengthMeasurementData.push(measurement);
+    });
+
+
+    return lengthMeasurementData;
+};