I took this picture of an X-ray of my broken toe with my digital camera by pulling up a blank screen, a plain white screen on my 24” iMac, I think it may have been a blank word processing document , I don’t remember, and then laying the xray on top of the monitor/screen. It’s not perfect but it is cheap and easy. You do need a monitor big enough to accomodate the size of the X-ray.