The magnetic resonance imaging, or shortened – MRI, is used to analyze different layers of the human body and are visible on a piece of a special foil after the procedure has been finished. The devices used in this process are recording signals that originate from cores of hydrogen atoms found inside a human body which is placed into an intensive, homogenous magnetic field.
How does the MRI work
The MRI devices forward the received signal to a computer which analyzes the data and transforms it to a visible spectrum on a computer screen, showing the scanned area in full detail and in multiple layers. As technology used in the mri recording originates from magnets, this method is far less hazardous for human health in comparison with radiology methods, where x-rays are used, where the tissue becomes warm to a certain extent, meaning it’s being damaged. With the MRI methods, the tissue is warmed by far less and is acceptable in regard to the SAR (specific absorption rate) standards. Special care is needed when scanning pregnant women, as the procedure might damage the placenta or fetus, but this hasn’t been proven yet and is taken as a precaution measure.
The costs of MRI devices and check ups
The price of the MRI devices depends on the power of the magnetic field which is supported, but by a number of different capabilities as well. Today, a device which grants 1.5 T of magnetic field power will cost you from one thousand up to fifteen thousand dollars. These prices vary based on the speed and the power of the gradient that can be accomplished by a specific MRI device. More powerful magnets are heavier as well, so mounting a more expensive device will also cost you more money. When it comes to check ups, it all depends on the techniques used and the contrast required which can be quite expensive too. Usually, prices range from two hundred up to one thousand dollars, with an official recommendation from a physician. When it comes to emergency, the MRI is rarely a case of that, since there are more methods at disposal since they cost less money, mostly, such as the CT and some other radiology methods.
Risks and rules of MRI recording
The MRI checkup tends to be very short and efficient, so short even that there haven’t been any hazardous effects noted in such a short period of time. Nevertheless, there are specific guidelines recommended that make the MRI recording procedure even more safer by standardizing the procedure. One of the most important laws brought by these guidelines is related to people that work in telecommunications and are exposed to magnetic radiation more than other people, limiting all radiation related checkups at most once per month. Pregnancy is a risky period to have an MRI, since the contrast residue used in these checkups can have some hazardous effects on the fetus, so it’s best to totally avoid all and any radiation based checkups in the first three months of pregnancy. Only a few incidents were noted regarding the magnetic resonance imaging so far, all related to physical traumas caused by the magnetic effect itself, not by pure radiation tissue damage.