Magnetic Attraction: The Basic of an MRI Scan

Things you need to know about MRIAdvancements in the field of radiology allow physicians all over the world an unparalleled view inside the human body. These various methods aid doctors in giving a precise diagnosis and the appropriate prescription for various illnesses and conditions.

As far as radiology is concerned, no method is more accurate than an MRI. Rainy Lake Medical Center explains that magnetic resonance imaging (MRI) utilizes magnetic fields to produce accurate images of inside the body. But an MRI scan may not be necessary — or even possible — for certain situations. Before you go for an MRI, here are some things you may need to know.

MRI Mechanics

An MRI scanner is a large machine consisting of a small table and a tunnel-like machine. The scanner works by bouncing magnetic fields off a particular region of the body and using radio frequencies to pick them up. The radio frequencies then turn the information received into images. The procedure is non-invasive and takes only a few minutes.

An MRI does not use ionizing radiation like X-rays or CT Scans do. This radiation can be damaging on soft tissue, which is why MR scans are the preferred method of imaging when it comes to tendons and knee injuries.

An MRI scan can also differentiate between gray and white brain matter. It is also used to diagnose different aneurysms and tumors.

Procedure Know-How

A basic MRI scan will start by having the patient dressed in a medical gown. The patient will then lie on a bed attached to the MRI and the procedure will begin. The radiologist or medical technician will provide instructions through a Public Announce (PA) system as the scan proceeds. Depending on the size of the area, the procedure can last anywhere between 30 and 50 minutes.

Before getting an MRI scan, it is important to inform your doctor if you’ve had any recent surgeries or suspect to be pregnant. It is also important to remove all metal items from your body, as this may interfere with the machine. You also need to inform the radiologist in charge if you have any artificial joints, pacemakers, implanted drug infusion ports, or metal pins or screws in your body.

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MRI scans can identify any internal anomalies more precisely than any method. And if done correctly, an MRI scan can save your life.