Creating a method to check if a measurement is a new lesion

Packages/ohif-measurements/client/lib/index.js

@@ -11,6 +11,7 @@ import './getLocationLabel';
 import './getTimepointName';
 import './getToolConfiguration';
 import './hangingProtocolCustomizations';
+import './isNewLesionsMeasurement';
 import './MeasurementHandlers';
 import './MeasurementManager';
 import './navigateOverLesions';

Packages/ohif-measurements/client/lib/isNewLesionsMeasurement.js

@@ -0,0 +1,35 @@
+import { OHIF } from 'meteor/ohif:core';
+import { _ } from 'meteor/underscore';
+
+/**
+ * Check if the given measurement is a new lesion
+ *
+ * @param measurementData Measurement that will be checked
+ * @returns {Boolean} Boolean value telling if the given measurement is a new lesion or not
+ */
+OHIF.measurements.isNewLesionsMeasurement = measurementData => {
+    if (!measurementData) return;
+
+    const { timepointApi, measurementApi } = OHIF.viewer;
+    const { timepointId, toolType } = measurementData;
+    const toolConfig = OHIF.measurements.getToolConfiguration(toolType);
+
+    // Stop here if the needed information is not set
+    if (!measurementApi || !timepointApi || !timepointId || !toolConfig) return;
+
+    const { toolGroupId } = toolConfig;
+    const current = timepointApi.timepoints.findOne({ timepointId });
+    const baseline = timepointApi.baseline();
+
+    // Stop here if there's no current or baseline timepoints, or if the current is the baseline
+    if (!current || !baseline || current.timepointType === 'baseline') return false;
+
+    // Retrieve all the data for the given tool group (e.g. 'targets')
+    const atBaseline = measurementApi.fetch(toolGroupId, { timepointId: baseline.timepointId });
+
+    // Obtain a list of the Measurement Numbers from the measurements which have baseline data
+    const numbers = atBaseline.map(m => m.measurementNumber);
+
+    // Return true if the measurement number from follow-up is not present at baseline
+    return !_.contains(numbers, measurementData.measurementNumber);
+};