An MRI is used mainly as a diagnostic tool but not for emergency cases where time is of the essence for a scan can take a quarter of an hour depending on the machine (or better yet how old it is). To the part where insurance plays part, most of these can be covered and reimbursed if ordered by an insurance authorized doctor. Sad is that, many CT scans are being ordered than necessary exposing you to more and more unnecessary radiation. Of course x-rays also expose you to radiation but they are far weaker and less likely to cause cancer. CT-scans have far reaching effects which can manifest 10 years after exposure so doctors (due to the large time gap between exposure and illness) prescribe them as if they were peanuts in the ballpark. Be wary of these exams and double check with your doctor if it is really necessary to have the procedure done. Who knows, it might save you (and even your insurance) a buck in unnecessary costs.

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Many of us take it fore granted how much medical technology has evolved into what it is today. In the past, if something hurts in an arm, it is simply cut of for retaining it would result in a useless limb anyway. The arrival of x-ray machines has allowed doctors to see the insides of the human body without having to cut it open which can in itself cause death. CT scans further improved the diagnosis part of medical practice for it allows doctors to see more in-depth soft tissue and other human body parts that were previously void in x-rays. The latest addition to the see-through the body arsenal is the MRI which uses high power magnetism to form 3-d images of the body allowing manipulation on all axes. The fastest diagnostic tool is an x-ray next is the ct-scan which are usually used in emergency cases.

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