Listening to NPR this morning. Someone was ranting about CAT scans, excessive Xray exposure from. The ranter did not, as is typical of ranters, have any numbers on the amount of radition (number of REMs) in a scan. Journalism school graduates are innumerate. This one slipped up and let out that 72 million CAT scans were billed last year.
Wow. The population of the US is only 300 million, that means nearly a quarter of the population was CAT scanned last year. That's a hell of a lot of CAT scans. If each scan cost $1000, that's $7.2 billion worth of scans.
Are all these scans necessary? I doubt it. Would they have occurred if the patient had to pay for them? I doubt it.
Note: I used to design CAT scanners many years ago.
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