Read this terrific piece of journalism in the New York Times - "Weighing the Costs of a CT Scan's Look Inside the Heart."
It analyzes important questions about the lack of evidence for these tests, the costs, the radiation risks, and the conflicts of interest of many who promote them.
The story includes a quote from a physician who is a heart CT scan promoter - "It's incumbent on the community to dispense with the need for evidence-based medicine."
To hell with evidence. To hell with science.
This attitude always reminds of me of the saying, "It ain't what a man don't know that gets him into trouble. It's what he knows for sure that just ain't so."