Dr. Michael McGonigal’s Trauma Professional’s Blog is a fantastic web resource with a nice, free monthly newsletter. I’ve been reading it regularly since medical school, and I’m pretty sure it’s the first place I remember learning the trick of rotating a chest x-ray 90 degrees when looking for rib fractures:
Your mileage may vary, but there’s something about scanning the more vertically oriented ribs that makes disruptions stand out more to me.
Here’s his original post on the subject.
Put this one in your same box as inverting colors to better see hardware like likes and tubes on chest x-rays.