From what I read on the net about pet scans, they seem to be worthy of use. Pretty much all the sites say the same thing. I do not read anything about false positives. My ENT referred to false positives as being a problem & yet he seems pretty progressive & proactive about making sure it's not cancer. How DOES one sort through all the subjective opinions? How DOES one find out what facility is the most skilled at reading pet scans accurately?