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