Orientation Markers Tool
How to set up the OrientationMarkers tool:
// Init cornerstone tools
cornerstoneTools.init();
// Enable any elements, and display images
// ...
// Add our tool, and set it's mode
const OrientationMarkersTool = cornerstoneTools.OrientationMarkersTool;
cornerstoneTools.addTool(OrientationMarkersTool)
cornerstoneTools.setToolActive('OrientationMarkers', { mouseButtonMask: 1 })