How does MRI scan work?

Magnetic resonance reduction (MRI) is an advanced medical technique that is used to produce high -resolution images. Unlike the X -ray, the image of MRI can show the soft tissue of the body and at the same time has flexibility for exploring very small areas of the body from a wide range of angles. MRI scan works by a combination of huge magnets, carefully targeted electromagnetic pulses and computer software that converts raw data into finished images. Many medical experts attribute MRI scanning with a revolution in the diagnostic field of medicine. Human beings usually consist of water, which in itself consists of a combination of two hydrogen atoms and one oxygen atom. The hydrogen atoms, which have many of which have many, are normally rotating. However, when it is subjected to the tuned magnet, the hydrogen atoms stop their random meanders and point to the same position and straighten the magnetic field. The first step of scanning MRI is to create a magnetic field that aligns atomY hydrogen, usually creates about half the point towards the legs and half towards the head.

MRI scan relies on the fact that very few hydrogen atoms refuse to cope with their billions of atomic brothers. These several of them continue randomly after applying the magnetic field, so they excel from the package. Using a radio frequency pulse, the MRI machine focuses on atoms still randomas that absorb pulse energy and spin in a different direction. During this process, a number of smaller magnets appeared in the machine known as gradients, in the spring to live, and located the efforts of the machine for specific parts of the body to be explored.

The last step when scanning MRI is to create an image. After the gradients focus on the slice of the body that requires attention, the radio pulses are stopped, allowing atoms to exclude the energy they absorbed and rotate back to their original position.The machine measures several different variables of their return to the original balance, and these measurements provide unprocessed data to create a final image.

The final picture is a product of computer magicians and medical technology. Patients are often injected with a contrasting agent that spots different types of different tissue shades, so the contrasts appear in the created image. Depending on the computer system used, information obtained from MRI scan can be converted into a two or three -dimensional image, which illuminates tissue differences due to the contrast agent.

Although MRI scanning is considered to be a very safe procedure that often produces the results, there are certain disadvantages of the process. First, scanning requires the patient to lie perfectly, otherwise the image will be disturbed. Although this may not seem like a big requirement, it is often more difficult by the fact that the machine is very loud and places the patient in a small enclosed space. People uncomfortable with tight prosTory may want to ask a doctor for possible ways to facilitate the process.