PET Scanning a risk for CAD?

[Ronin786]

So in Master the Boards Step 2 on the bottom of Page 51 it says that Positron Emission Tomography is a "less reliable but probable risk factor" for CAD.

I've searched everywhere and can't find anything linking the two. I also have never heard anything of the sort throughout med school. Only thing I can find is the use of PET scanning in evaluating CAD, but nothing that says it's a risk factor.

Anybody have any thought about this?

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[thehundredthone]

Maybe it's just the fact that it can pick up subclinical CAD. Or maybe it's all the radioactive glucose.