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From my experiences, techs are the people who actually perform the tasks FOR the doctors. The doctors don't preform the X-rays or MRIs, they just "interpret" the results.
My orthopedic surgeon told me that most doctors NEVER take any advanced courses in radiological measurements, beyond the ONE that they're required to take in school. As such, they couldn't tell the difference between a broken bone and a twig. Which is why so many miss what's on an X-ray.
Techs are trained on how to operate the equipment but not on how to interpret the findings. However, with experience, most techs can interpret them. The problem is that there is, usually, a high turnover in techs because hospital's don't like to pay their techs very much. The same holds true for EMTs. Most get burned-out, dealing with low pay and high stress.
On a side note, Loki, one of our Nashville TV stations ran an expose' recently. It detailed how many states collect taxes and fees from their citizens for 911 Emergency Services but NEVER give the full amount collected to the proper departments so they can maintain and up-grade their Emergency Services. Instead, the money goes to cutting the grass on state property or for advertising tourist attractions in the state, or painting the interior of county courthouses, or even for pressure-washing the exterior of the Governor's Mansion.
No wonder the ambulance made a wrong turn. They, probably, didn't have an up-dated GPS system in their vehicle. Instead, the Governor got his house washed and your county courthouse got a fresh coat of paint! Wasn't that so kind of them?!
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