Magnetic resonance imaging, otherwise known as MRI, is a free from harm scanning method that uses very strong magnetic fields and radiofrequenties to generate clear and precise photos of the human body in any direction. The pictures provide information that can be useful in diagnosing a wide variety of diseases and conditions. Radio waves cause the molecules to create faint signals that are used to view the body in narrow, axial slices.An MRI scanner has a large magnet with a tube shaped tunnel through the middle. The MRI machine picks up signals from the nuclei of the hydrogen atoms in the body. A computer converts these signals them into a black and white picture. The magnets from the MRIs develops a strong magnetic field that makes the protons to align with the field. When the radiofrequency pulses are sent in, the protons are stimulated and makes them non-equilibrium, a state of the chemical reaction in which the opposing forces are not balanced. When the pulses are off, the particles produce electrical signals that are picked up by the MRI sensors which can identify the energy released. When the body is placed in the magnetic field of the magnetic resonance imaging machine, it realigns hydrogen molecules which is magnetic. The radio wave disrupts the atoms’ polarity. The MRI sensors detects the time span for the atoms to align to the original alignment. How long it takes for the protons to realign with the magnetic field and the amount of energy released, depends on the surroundings and the chemical nature of the molecules.Detailed photos of soft tissues are given by an MRI. Hard bone, air, muscles, and fat appear black in the MRI images because they have different densities and water content, creating different levels of signal. Soft tissues alter in intensity from black to white from the amount of fat and water present in the tissue. Comparing the size and distributions of the bright and dark areas from the MRI image can help the radiologist figure out whether the tissue is healthy or not.The photo above demonstrates a patient with a brain tumor. MRIs are the best imaging method to use when it comes to the investigation of the brain or spinal cord. Doctors can determine what type of tumor it might be, based on how it looks on the scan and the location of the tumor in the brain using the MRI scans. It can even measure the size of the tumor. MRIs are the best way to diagnose a brain tumor because they provide a high resolution image of the conditions from the contrast agent.To receive a clear MRI image, the patient must remain still during the process when placed inside the magnet. MRI contrast agents are chemical substances used in MRI scans and often contains the element gadolinium which has magnetic properties that can be used to enhance certain tissues by injecting into the bloodstream. The computer have the ability to see the arteries and veins by the gadolinium absorbing in certain tissues. A computer is able to produce a black and white image from the measurement of the water content of different soft tissues. In order to increase the speed of the protons realign with the magnetic field, contrast agents may be given to the patient before or during the procedure. If the protons realign rapidly, the MRI photos will turn out brighter. An MRI scan may provide more information about the problem than X-Rays, CAT scan, or ultrasound. It is probably the best method to finding tumors or examining the joints, spine, and the soft parts like the liver and kidneys. MRI’s ability to highlight contrasts in soft tissues enables the information about the problem with joints, cartilage, ligaments, and tendons. It can be used to detect infections and inflammatory issues. MRIs can help doctors look out for symptoms of the possibility of cancer spreading to another part of the patient’s body. MRIs are useful for imaging organs and soft tissues without radiation and showing the tissue difference between normal and abnormal. The smallest abnormalities show up on these MRI scans. Due to the fact that abnormal tissues will differ from normal, healthy tissues, the abnormal tissues will appear darker or brighter than the normal tissue on the scan.