Should I get a bone scan? The flow chart

I don't love flowcharts. Most of the ones I've seen are totally useless or just silly. But I think the simple form of a flowchart can actually be pretty useful for explaining a complicated subject (that is, when that subject isn't beyond all hope). This one on campaign finance, for example, is easy to follow and packs in a decent amount of info into a relatively small space.

Here's one I did for a health reporting class on bone scans (and whether or not you need one). The current recommendations are tucked away in obscure reports, and according to the doctors I talked to, many people who should be getting bone scans aren't. The chart's not great, but it's one attempt to lay out the information. Just for fun, I made it in the style of a typical Wired flowchart.

Here's the bigger version.