Magnetresonantsuuring

Magnetresonantsuuring, commonly known as MRI, is a medical imaging technique that utilizes magnetic fields and radio waves to create detailed images of organs and tissues within the body. It is a non-invasive procedure that does not involve ionizing radiation, making it a safer alternative to X-rays and CT scans for certain diagnostic purposes. The process works by aligning the protons within the body's water molecules using a strong magnetic field. Radiofrequency pulses are then applied, which temporarily knock these protons out of alignment. As the protons realign, they emit radio signals that are detected by the MRI scanner. Different tissues emit signals at varying rates, allowing the computer to generate cross-sectional images. MRI is particularly useful for visualizing soft tissues such as the brain, spinal cord, muscles, ligaments, and internal organs. It can help diagnose a wide range of conditions including tumors, injuries, inflammatory diseases, and neurological disorders. Before the procedure, patients are screened for metallic implants or foreign bodies, as these can interfere with the magnetic field or pose a safety risk. During the scan, patients lie on a table that slides into the MRI machine, a large, tube-like magnet. The process can take anywhere from 15 minutes to over an hour, depending on the area being examined and the complexity of the images required. Patients may hear loud knocking or banging sounds during the scan, which is normal and can be mitigated by wearing earplugs or headphones.