src/views/trials/trials-panel/reading/dicoms3D/components/helpers/setNmFusionColorMapTransferFunctionForVolumeActor.js

@@ -32,8 +32,15 @@ export default function setPetColorMapTransferFunctionForVolumeActor({
   cfun.applyColorMap(presetToUse);
 
   const center = getWindowCenterFromVolumeId(volumeId);
-  const upper = center > 1 ? center : 5;
+  const upper = Number.isFinite(center) && center > 1 ? center : 5;
   cfun.setMappingRange(1, upper);
 
   volumeActor.getProperty().setRGBTransferFunction(0, cfun);
+
+  const ofun = vtkPiecewiseFunction.newInstance();
+  const rampX = Number.isFinite(upper) && upper > 0 ? Math.min(0.1, upper * 0.02) : 0.1;
+  ofun.addPoint(0, 0.0);
+  ofun.addPoint(rampX, 0.9);
+  ofun.addPoint(upper, 1.0);
+  volumeActor.getProperty().setScalarOpacity(0, ofun);
 }